/usr/bin/java -Xmx16000000000 -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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 15:30:22,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 15:30:22,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 15:30:22,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 15:30:22,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 15:30:22,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 15:30:22,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 15:30:22,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 15:30:22,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 15:30:22,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 15:30:22,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 15:30:22,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 15:30:22,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 15:30:22,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 15:30:22,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 15:30:22,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 15:30:22,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 15:30:22,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 15:30:22,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 15:30:22,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 15:30:22,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 15:30:22,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 15:30:22,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 15:30:22,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 15:30:22,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 15:30:22,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 15:30:22,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 15:30:22,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 15:30:22,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 15:30:22,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 15:30:22,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 15:30:22,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 15:30:22,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 15:30:22,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 15:30:22,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 15:30:22,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 15:30:22,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 15:30:22,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 15:30:22,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 15:30:22,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 15:30:22,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 15:30:22,435 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-After.epf [2022-01-19 15:30:22,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 15:30:22,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 15:30:22,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 15:30:22,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 15:30:22,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 15:30:22,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 15:30:22,452 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 15:30:22,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 15:30:22,452 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 15:30:22,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 15:30:22,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 15:30:22,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 15:30:22,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 15:30:22,454 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 15:30:22,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 15:30:22,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 15:30:22,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 15:30:22,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 15:30:22,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 15:30:22,596 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 15:30:22,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-01-19 15:30:22,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32e51c29/089706e19f55460fb6c28418bb005706/FLAG6df99e25a [2022-01-19 15:30:23,060 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 15:30:23,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2022-01-19 15:30:23,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32e51c29/089706e19f55460fb6c28418bb005706/FLAG6df99e25a [2022-01-19 15:30:23,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32e51c29/089706e19f55460fb6c28418bb005706 [2022-01-19 15:30:23,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 15:30:23,080 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 15:30:23,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 15:30:23,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 15:30:23,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 15:30:23,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cfafddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23, skipping insertion in model container [2022-01-19 15:30:23,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 15:30:23,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 15:30:23,324 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-deagle/circular_buffer_bad.i[30440,30453] [2022-01-19 15:30:23,330 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-deagle/circular_buffer_bad.i[30895,30908] [2022-01-19 15:30:23,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 15:30:23,340 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 15:30:23,364 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-deagle/circular_buffer_bad.i[30440,30453] [2022-01-19 15:30:23,366 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-deagle/circular_buffer_bad.i[30895,30908] [2022-01-19 15:30:23,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 15:30:23,390 INFO L208 MainTranslator]: Completed translation [2022-01-19 15:30:23,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23 WrapperNode [2022-01-19 15:30:23,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 15:30:23,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 15:30:23,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 15:30:23,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 15:30:23,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,435 INFO L137 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2022-01-19 15:30:23,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 15:30:23,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 15:30:23,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 15:30:23,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 15:30:23,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 15:30:23,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 15:30:23,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 15:30:23,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 15:30:23,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (1/1) ... [2022-01-19 15:30:23,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 15:30:23,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:23,508 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) [2022-01-19 15:30:23,519 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 [2022-01-19 15:30:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 15:30:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-19 15:30:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-19 15:30:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-19 15:30:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-19 15:30:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 15:30:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-19 15:30:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 15:30:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 15:30:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 15:30:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-19 15:30:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 15:30:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 15:30:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 15:30:23,544 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 15:30:23,651 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 15:30:23,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 15:30:23,818 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 15:30:23,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 15:30:23,824 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 15:30:23,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:30:23 BoogieIcfgContainer [2022-01-19 15:30:23,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 15:30:23,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 15:30:23,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 15:30:23,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 15:30:23,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 03:30:23" (1/3) ... [2022-01-19 15:30:23,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e24ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:30:23, skipping insertion in model container [2022-01-19 15:30:23,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 03:30:23" (2/3) ... [2022-01-19 15:30:23,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e24ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 03:30:23, skipping insertion in model container [2022-01-19 15:30:23,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 03:30:23" (3/3) ... [2022-01-19 15:30:23,831 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-01-19 15:30:23,835 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 15:30:23,835 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-19 15:30:23,835 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,868 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,869 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,870 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,871 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,872 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,874 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,875 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,876 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,876 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,877 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,877 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,877 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,878 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,878 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,878 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,878 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,878 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,879 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,879 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,879 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,879 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,880 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,880 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,880 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,880 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,881 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,882 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,883 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,887 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,887 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,888 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,888 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,889 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,889 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,889 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,890 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,892 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,896 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,896 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,896 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,896 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,897 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,897 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,897 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,897 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,897 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,898 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,898 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,898 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,898 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,898 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,899 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,900 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,900 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,900 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,900 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,901 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,902 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,903 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,903 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,905 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,906 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,906 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,906 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,906 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,911 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,911 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,911 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,911 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,912 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 15:30:23,919 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 15:30:23,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 15:30:23,973 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 15:30:23,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-19 15:30:23,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-01-19 15:30:24,026 INFO L129 PetriNetUnfolder]: 10/148 cut-off events. [2022-01-19 15:30:24,026 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 15:30:24,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-01-19 15:30:24,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2022-01-19 15:30:24,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 285 flow [2022-01-19 15:30:24,058 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2022-01-19 15:30:24,059 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 15:30:24,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:24,068 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:24,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1386578492, now seen corresponding path program 1 times [2022-01-19 15:30:24,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:24,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621890163] [2022-01-19 15:30:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:24,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:24,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:24,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726442034] [2022-01-19 15:30:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:24,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:24,238 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) [2022-01-19 15:30:24,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 15:30:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:24,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 15:30:24,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:24,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:24,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:24,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621890163] [2022-01-19 15:30:24,615 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:24,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726442034] [2022-01-19 15:30:24,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726442034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:24,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:24,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 15:30:24,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753296827] [2022-01-19 15:30:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:24,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 15:30:24,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 15:30:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 15:30:24,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-01-19 15:30:24,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:24,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:24,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-01-19 15:30:24,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:24,748 INFO L129 PetriNetUnfolder]: 34/287 cut-off events. [2022-01-19 15:30:24,749 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 15:30:24,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 287 events. 34/287 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1145 event pairs, 8 based on Foata normal form. 20/279 useless extension candidates. Maximal degree in co-relation 283. Up to 32 conditions per place. [2022-01-19 15:30:24,754 INFO L132 encePairwiseOnDemand]: 140/150 looper letters, 15 selfloop transitions, 7 changer transitions 0/137 dead transitions. [2022-01-19 15:30:24,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 137 transitions, 333 flow [2022-01-19 15:30:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 15:30:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 15:30:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2022-01-19 15:30:24,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8983333333333333 [2022-01-19 15:30:24,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2022-01-19 15:30:24,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2022-01-19 15:30:24,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:24,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2022-01-19 15:30:24,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:24,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:24,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:24,788 INFO L186 Difference]: Start difference. First operand has 135 places, 138 transitions, 285 flow. Second operand 4 states and 539 transitions. [2022-01-19 15:30:24,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 137 transitions, 333 flow [2022-01-19 15:30:24,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 137 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 15:30:24,795 INFO L242 Difference]: Finished difference. Result has 132 places, 134 transitions, 299 flow [2022-01-19 15:30:24,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=132, PETRI_TRANSITIONS=134} [2022-01-19 15:30:24,801 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2022-01-19 15:30:24,801 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 134 transitions, 299 flow [2022-01-19 15:30:24,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:24,801 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:24,802 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:24,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:25,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-19 15:30:25,005 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 204627122, now seen corresponding path program 1 times [2022-01-19 15:30:25,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642252778] [2022-01-19 15:30:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:25,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:25,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:25,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642252778] [2022-01-19 15:30:25,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642252778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:25,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:25,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 15:30:25,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453292069] [2022-01-19 15:30:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:25,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 15:30:25,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:25,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 15:30:25,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 15:30:25,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 150 [2022-01-19 15:30:25,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 134 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:25,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 150 [2022-01-19 15:30:25,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:25,216 INFO L129 PetriNetUnfolder]: 47/421 cut-off events. [2022-01-19 15:30:25,216 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-01-19 15:30:25,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 421 events. 47/421 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1544 event pairs, 5 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 333. Up to 27 conditions per place. [2022-01-19 15:30:25,219 INFO L132 encePairwiseOnDemand]: 146/150 looper letters, 12 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2022-01-19 15:30:25,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 139 transitions, 349 flow [2022-01-19 15:30:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 15:30:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 15:30:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2022-01-19 15:30:25,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9244444444444444 [2022-01-19 15:30:25,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2022-01-19 15:30:25,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2022-01-19 15:30:25,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:25,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2022-01-19 15:30:25,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,224 INFO L186 Difference]: Start difference. First operand has 132 places, 134 transitions, 299 flow. Second operand 3 states and 416 transitions. [2022-01-19 15:30:25,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 139 transitions, 349 flow [2022-01-19 15:30:25,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 15:30:25,230 INFO L242 Difference]: Finished difference. Result has 134 places, 135 transitions, 311 flow [2022-01-19 15:30:25,230 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2022-01-19 15:30:25,231 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -1 predicate places. [2022-01-19 15:30:25,231 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 311 flow [2022-01-19 15:30:25,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:25,231 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:25,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 15:30:25,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2135003898, now seen corresponding path program 1 times [2022-01-19 15:30:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:25,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282348402] [2022-01-19 15:30:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:25,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:25,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:25,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282348402] [2022-01-19 15:30:25,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282348402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:25,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:25,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 15:30:25,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747075594] [2022-01-19 15:30:25,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:25,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 15:30:25,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 15:30:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 15:30:25,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 150 [2022-01-19 15:30:25,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:25,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 150 [2022-01-19 15:30:25,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:25,371 INFO L129 PetriNetUnfolder]: 37/365 cut-off events. [2022-01-19 15:30:25,371 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-01-19 15:30:25,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 365 events. 37/365 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1376 event pairs, 6 based on Foata normal form. 7/347 useless extension candidates. Maximal degree in co-relation 280. Up to 32 conditions per place. [2022-01-19 15:30:25,373 INFO L132 encePairwiseOnDemand]: 146/150 looper letters, 16 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2022-01-19 15:30:25,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 350 flow [2022-01-19 15:30:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 15:30:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 15:30:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-01-19 15:30:25,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2022-01-19 15:30:25,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-01-19 15:30:25,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-01-19 15:30:25,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:25,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-01-19 15:30:25,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,376 INFO L186 Difference]: Start difference. First operand has 134 places, 135 transitions, 311 flow. Second operand 3 states and 399 transitions. [2022-01-19 15:30:25,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 350 flow [2022-01-19 15:30:25,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 343 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 15:30:25,380 INFO L242 Difference]: Finished difference. Result has 135 places, 133 transitions, 302 flow [2022-01-19 15:30:25,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2022-01-19 15:30:25,380 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-01-19 15:30:25,380 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 302 flow [2022-01-19 15:30:25,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:25,381 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:25,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 15:30:25,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:25,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash -570377209, now seen corresponding path program 1 times [2022-01-19 15:30:25,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:25,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439440243] [2022-01-19 15:30:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:25,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:25,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439440243] [2022-01-19 15:30:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439440243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:25,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:25,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 15:30:25,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496578563] [2022-01-19 15:30:25,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:25,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 15:30:25,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 15:30:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 15:30:25,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 150 [2022-01-19 15:30:25,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:25,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 150 [2022-01-19 15:30:25,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:25,610 INFO L129 PetriNetUnfolder]: 32/374 cut-off events. [2022-01-19 15:30:25,610 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-01-19 15:30:25,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 374 events. 32/374 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1332 event pairs, 6 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 219. Up to 43 conditions per place. [2022-01-19 15:30:25,612 INFO L132 encePairwiseOnDemand]: 144/150 looper letters, 20 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2022-01-19 15:30:25,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 138 transitions, 371 flow [2022-01-19 15:30:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 15:30:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 15:30:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 768 transitions. [2022-01-19 15:30:25,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-01-19 15:30:25,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 768 transitions. [2022-01-19 15:30:25,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 768 transitions. [2022-01-19 15:30:25,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:25,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 768 transitions. [2022-01-19 15:30:25,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,618 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,618 INFO L186 Difference]: Start difference. First operand has 135 places, 133 transitions, 302 flow. Second operand 6 states and 768 transitions. [2022-01-19 15:30:25,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 138 transitions, 371 flow [2022-01-19 15:30:25,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 15:30:25,620 INFO L242 Difference]: Finished difference. Result has 140 places, 134 transitions, 319 flow [2022-01-19 15:30:25,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2022-01-19 15:30:25,621 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 5 predicate places. [2022-01-19 15:30:25,621 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 319 flow [2022-01-19 15:30:25,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:25,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:25,622 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 15:30:25,622 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1847670715, now seen corresponding path program 1 times [2022-01-19 15:30:25,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:25,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679850057] [2022-01-19 15:30:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:25,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:25,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:25,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187897618] [2022-01-19 15:30:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:25,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:25,639 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) [2022-01-19 15:30:25,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 15:30:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:25,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 15:30:25,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:26,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:26,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:26,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679850057] [2022-01-19 15:30:26,261 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:26,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187897618] [2022-01-19 15:30:26,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187897618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:26,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:26,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 15:30:26,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647601185] [2022-01-19 15:30:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:26,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 15:30:26,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 15:30:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-19 15:30:26,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-01-19 15:30:26,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:26,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:26,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-01-19 15:30:26,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:26,399 INFO L129 PetriNetUnfolder]: 45/469 cut-off events. [2022-01-19 15:30:26,399 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-01-19 15:30:26,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 469 events. 45/469 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1919 event pairs, 10 based on Foata normal form. 3/441 useless extension candidates. Maximal degree in co-relation 260. Up to 49 conditions per place. [2022-01-19 15:30:26,401 INFO L132 encePairwiseOnDemand]: 141/150 looper letters, 32 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2022-01-19 15:30:26,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 149 transitions, 454 flow [2022-01-19 15:30:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 15:30:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 15:30:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 998 transitions. [2022-01-19 15:30:26,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316666666666667 [2022-01-19 15:30:26,403 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 998 transitions. [2022-01-19 15:30:26,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 998 transitions. [2022-01-19 15:30:26,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:26,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 998 transitions. [2022-01-19 15:30:26,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.75) internal successors, (998), 8 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:26,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:26,410 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:26,410 INFO L186 Difference]: Start difference. First operand has 140 places, 134 transitions, 319 flow. Second operand 8 states and 998 transitions. [2022-01-19 15:30:26,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 149 transitions, 454 flow [2022-01-19 15:30:26,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 149 transitions, 446 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 15:30:26,414 INFO L242 Difference]: Finished difference. Result has 144 places, 136 transitions, 347 flow [2022-01-19 15:30:26,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=347, PETRI_PLACES=144, PETRI_TRANSITIONS=136} [2022-01-19 15:30:26,416 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 9 predicate places. [2022-01-19 15:30:26,416 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 136 transitions, 347 flow [2022-01-19 15:30:26,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:26,417 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:26,417 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:26,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:26,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:26,632 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1611186747, now seen corresponding path program 1 times [2022-01-19 15:30:26,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:26,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138302194] [2022-01-19 15:30:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:26,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:26,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:26,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958277732] [2022-01-19 15:30:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:26,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:26,647 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) [2022-01-19 15:30:26,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 15:30:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:26,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:26,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:26,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:27,003 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:27,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:27,025 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:27,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:27,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:27,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:27,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:27,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 15:30:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:28,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:28,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138302194] [2022-01-19 15:30:28,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958277732] [2022-01-19 15:30:28,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958277732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:28,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:28,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 15:30:28,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039415603] [2022-01-19 15:30:28,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:28,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 15:30:28,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 15:30:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-19 15:30:28,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:28,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 136 transitions, 347 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:28,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:28,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:28,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:28,904 INFO L129 PetriNetUnfolder]: 1829/4630 cut-off events. [2022-01-19 15:30:28,905 INFO L130 PetriNetUnfolder]: For 622/622 co-relation queries the response was YES. [2022-01-19 15:30:28,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8308 conditions, 4630 events. 1829/4630 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 34078 event pairs, 527 based on Foata normal form. 0/4112 useless extension candidates. Maximal degree in co-relation 4244. Up to 1605 conditions per place. [2022-01-19 15:30:28,924 INFO L132 encePairwiseOnDemand]: 125/150 looper letters, 161 selfloop transitions, 54 changer transitions 21/315 dead transitions. [2022-01-19 15:30:28,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 315 transitions, 1215 flow [2022-01-19 15:30:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 15:30:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 15:30:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2146 transitions. [2022-01-19 15:30:28,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6220289855072464 [2022-01-19 15:30:28,929 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2146 transitions. [2022-01-19 15:30:28,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2146 transitions. [2022-01-19 15:30:28,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:28,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2146 transitions. [2022-01-19 15:30:28,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 93.30434782608695) internal successors, (2146), 23 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:28,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:28,937 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:28,937 INFO L186 Difference]: Start difference. First operand has 144 places, 136 transitions, 347 flow. Second operand 23 states and 2146 transitions. [2022-01-19 15:30:28,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 315 transitions, 1215 flow [2022-01-19 15:30:28,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 315 transitions, 1200 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-01-19 15:30:28,942 INFO L242 Difference]: Finished difference. Result has 176 places, 186 transitions, 685 flow [2022-01-19 15:30:28,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=685, PETRI_PLACES=176, PETRI_TRANSITIONS=186} [2022-01-19 15:30:28,943 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 41 predicate places. [2022-01-19 15:30:28,943 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 186 transitions, 685 flow [2022-01-19 15:30:28,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:28,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:28,944 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:28,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:29,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:29,160 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash -176387097, now seen corresponding path program 2 times [2022-01-19 15:30:29,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:29,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982810883] [2022-01-19 15:30:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:29,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:29,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:29,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227863882] [2022-01-19 15:30:29,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 15:30:29,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:29,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:29,175 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) [2022-01-19 15:30:29,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 15:30:29,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 15:30:29,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:30:29,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:29,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:29,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:29,484 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:29,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:29,506 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:29,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:29,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:29,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:29,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:30,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 15:30:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:30,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:30,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982810883] [2022-01-19 15:30:30,502 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227863882] [2022-01-19 15:30:30,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227863882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:30,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:30,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 15:30:30,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233992207] [2022-01-19 15:30:30,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:30,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 15:30:30,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 15:30:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-01-19 15:30:30,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:30,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 186 transitions, 685 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:30,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:30,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:30,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:31,503 INFO L129 PetriNetUnfolder]: 2538/6846 cut-off events. [2022-01-19 15:30:31,503 INFO L130 PetriNetUnfolder]: For 6681/6713 co-relation queries the response was YES. [2022-01-19 15:30:31,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17001 conditions, 6846 events. 2538/6846 cut-off events. For 6681/6713 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 55900 event pairs, 597 based on Foata normal form. 20/6435 useless extension candidates. Maximal degree in co-relation 13950. Up to 1124 conditions per place. [2022-01-19 15:30:31,547 INFO L132 encePairwiseOnDemand]: 130/150 looper letters, 225 selfloop transitions, 64 changer transitions 11/379 dead transitions. [2022-01-19 15:30:31,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 379 transitions, 2147 flow [2022-01-19 15:30:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 15:30:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 15:30:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1897 transitions. [2022-01-19 15:30:31,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6323333333333333 [2022-01-19 15:30:31,552 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1897 transitions. [2022-01-19 15:30:31,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1897 transitions. [2022-01-19 15:30:31,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:31,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1897 transitions. [2022-01-19 15:30:31,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.85) internal successors, (1897), 20 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:31,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:31,560 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:31,560 INFO L186 Difference]: Start difference. First operand has 176 places, 186 transitions, 685 flow. Second operand 20 states and 1897 transitions. [2022-01-19 15:30:31,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 379 transitions, 2147 flow [2022-01-19 15:30:31,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 379 transitions, 2139 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 15:30:31,581 INFO L242 Difference]: Finished difference. Result has 203 places, 219 transitions, 1131 flow [2022-01-19 15:30:31,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1131, PETRI_PLACES=203, PETRI_TRANSITIONS=219} [2022-01-19 15:30:31,582 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 68 predicate places. [2022-01-19 15:30:31,582 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 219 transitions, 1131 flow [2022-01-19 15:30:31,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:31,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:31,582 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:31,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-19 15:30:31,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:31,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 696162917, now seen corresponding path program 3 times [2022-01-19 15:30:31,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:31,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920724459] [2022-01-19 15:30:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:31,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:31,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:31,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832256363] [2022-01-19 15:30:31,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 15:30:31,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:31,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:31,868 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) [2022-01-19 15:30:31,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 15:30:32,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 15:30:32,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:30:32,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:32,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:32,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:32,179 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:32,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:32,200 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:32,201 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:32,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:32,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:32,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:32,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 15:30:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:33,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:33,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920724459] [2022-01-19 15:30:33,270 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832256363] [2022-01-19 15:30:33,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832256363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:33,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:33,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 15:30:33,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740104553] [2022-01-19 15:30:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:33,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 15:30:33,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 15:30:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-01-19 15:30:33,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:33,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 219 transitions, 1131 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:33,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:33,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:33,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:34,786 INFO L129 PetriNetUnfolder]: 3723/9998 cut-off events. [2022-01-19 15:30:34,786 INFO L130 PetriNetUnfolder]: For 25946/26004 co-relation queries the response was YES. [2022-01-19 15:30:34,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29343 conditions, 9998 events. 3723/9998 cut-off events. For 25946/26004 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 86024 event pairs, 1362 based on Foata normal form. 3/9384 useless extension candidates. Maximal degree in co-relation 23906. Up to 3307 conditions per place. [2022-01-19 15:30:34,853 INFO L132 encePairwiseOnDemand]: 128/150 looper letters, 268 selfloop transitions, 56 changer transitions 3/406 dead transitions. [2022-01-19 15:30:34,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 406 transitions, 2910 flow [2022-01-19 15:30:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 15:30:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 15:30:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1890 transitions. [2022-01-19 15:30:34,856 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.63 [2022-01-19 15:30:34,856 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1890 transitions. [2022-01-19 15:30:34,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1890 transitions. [2022-01-19 15:30:34,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:34,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1890 transitions. [2022-01-19 15:30:34,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.5) internal successors, (1890), 20 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:34,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:34,863 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:34,864 INFO L186 Difference]: Start difference. First operand has 203 places, 219 transitions, 1131 flow. Second operand 20 states and 1890 transitions. [2022-01-19 15:30:34,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 406 transitions, 2910 flow [2022-01-19 15:30:34,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 406 transitions, 2832 flow, removed 36 selfloop flow, removed 3 redundant places. [2022-01-19 15:30:34,915 INFO L242 Difference]: Finished difference. Result has 232 places, 257 transitions, 1682 flow [2022-01-19 15:30:34,915 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1682, PETRI_PLACES=232, PETRI_TRANSITIONS=257} [2022-01-19 15:30:34,916 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 97 predicate places. [2022-01-19 15:30:34,916 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 257 transitions, 1682 flow [2022-01-19 15:30:34,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:34,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:34,917 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:34,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:35,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:35,131 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1697750481, now seen corresponding path program 4 times [2022-01-19 15:30:35,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:35,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191306683] [2022-01-19 15:30:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:35,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:35,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:35,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440404874] [2022-01-19 15:30:35,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 15:30:35,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:35,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:35,146 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) [2022-01-19 15:30:35,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 15:30:35,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 15:30:35,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:30:35,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-19 15:30:35,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:35,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:35,441 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:35,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:35,470 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-19 15:30:35,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-19 15:30:35,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:35,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:35,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:36,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 15:30:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:36,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:36,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:36,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191306683] [2022-01-19 15:30:36,567 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:36,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440404874] [2022-01-19 15:30:36,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440404874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:36,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:36,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 15:30:36,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231467809] [2022-01-19 15:30:36,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:36,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 15:30:36,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:36,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 15:30:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-19 15:30:36,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:36,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 257 transitions, 1682 flow. Second operand has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:36,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:36,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:36,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:38,669 INFO L129 PetriNetUnfolder]: 5193/13985 cut-off events. [2022-01-19 15:30:38,669 INFO L130 PetriNetUnfolder]: For 58432/58492 co-relation queries the response was YES. [2022-01-19 15:30:38,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46048 conditions, 13985 events. 5193/13985 cut-off events. For 58432/58492 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 129644 event pairs, 1804 based on Foata normal form. 26/13263 useless extension candidates. Maximal degree in co-relation 42229. Up to 5296 conditions per place. [2022-01-19 15:30:38,790 INFO L132 encePairwiseOnDemand]: 129/150 looper letters, 316 selfloop transitions, 73 changer transitions 8/476 dead transitions. [2022-01-19 15:30:38,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 476 transitions, 4168 flow [2022-01-19 15:30:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 15:30:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 15:30:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1913 transitions. [2022-01-19 15:30:38,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6376666666666667 [2022-01-19 15:30:38,793 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1913 transitions. [2022-01-19 15:30:38,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1913 transitions. [2022-01-19 15:30:38,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:38,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1913 transitions. [2022-01-19 15:30:38,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.65) internal successors, (1913), 20 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:38,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:38,800 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:38,800 INFO L186 Difference]: Start difference. First operand has 232 places, 257 transitions, 1682 flow. Second operand 20 states and 1913 transitions. [2022-01-19 15:30:38,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 476 transitions, 4168 flow [2022-01-19 15:30:38,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 476 transitions, 4022 flow, removed 63 selfloop flow, removed 5 redundant places. [2022-01-19 15:30:38,924 INFO L242 Difference]: Finished difference. Result has 259 places, 312 transitions, 2508 flow [2022-01-19 15:30:38,925 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2508, PETRI_PLACES=259, PETRI_TRANSITIONS=312} [2022-01-19 15:30:38,926 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 124 predicate places. [2022-01-19 15:30:38,926 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 312 transitions, 2508 flow [2022-01-19 15:30:38,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.58823529411765) internal successors, (1455), 17 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:38,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:38,926 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:38,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-19 15:30:39,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:39,145 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1549328667, now seen corresponding path program 5 times [2022-01-19 15:30:39,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:39,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848655383] [2022-01-19 15:30:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:39,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:39,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:39,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285555039] [2022-01-19 15:30:39,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 15:30:39,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:39,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:39,160 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) [2022-01-19 15:30:39,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 15:30:39,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 15:30:39,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:30:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:39,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:39,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:39,434 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:39,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:39,455 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:39,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:39,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:39,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:39,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:39,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-01-19 15:30:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:39,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:39,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:39,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848655383] [2022-01-19 15:30:39,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:39,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285555039] [2022-01-19 15:30:39,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285555039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:39,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:39,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 15:30:39,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613971113] [2022-01-19 15:30:39,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:39,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 15:30:39,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:39,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 15:30:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-19 15:30:39,986 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:39,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 312 transitions, 2508 flow. Second operand has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:39,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:39,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:39,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:42,786 INFO L129 PetriNetUnfolder]: 6277/16839 cut-off events. [2022-01-19 15:30:42,786 INFO L130 PetriNetUnfolder]: For 95776/95868 co-relation queries the response was YES. [2022-01-19 15:30:42,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62568 conditions, 16839 events. 6277/16839 cut-off events. For 95776/95868 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 162889 event pairs, 2478 based on Foata normal form. 32/15922 useless extension candidates. Maximal degree in co-relation 59787. Up to 7350 conditions per place. [2022-01-19 15:30:42,968 INFO L132 encePairwiseOnDemand]: 126/150 looper letters, 325 selfloop transitions, 96 changer transitions 7/507 dead transitions. [2022-01-19 15:30:42,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 507 transitions, 5225 flow [2022-01-19 15:30:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 15:30:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 15:30:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2047 transitions. [2022-01-19 15:30:42,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6203030303030304 [2022-01-19 15:30:42,971 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2047 transitions. [2022-01-19 15:30:42,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2047 transitions. [2022-01-19 15:30:42,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:42,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2047 transitions. [2022-01-19 15:30:42,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.04545454545455) internal successors, (2047), 22 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:42,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:42,978 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:42,978 INFO L186 Difference]: Start difference. First operand has 259 places, 312 transitions, 2508 flow. Second operand 22 states and 2047 transitions. [2022-01-19 15:30:42,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 507 transitions, 5225 flow [2022-01-19 15:30:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 507 transitions, 4958 flow, removed 131 selfloop flow, removed 3 redundant places. [2022-01-19 15:30:43,213 INFO L242 Difference]: Finished difference. Result has 292 places, 383 transitions, 3657 flow [2022-01-19 15:30:43,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3657, PETRI_PLACES=292, PETRI_TRANSITIONS=383} [2022-01-19 15:30:43,214 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 157 predicate places. [2022-01-19 15:30:43,214 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 383 transitions, 3657 flow [2022-01-19 15:30:43,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.75) internal successors, (1372), 16 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:43,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:43,215 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:43,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:43,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:43,431 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash 848285264, now seen corresponding path program 1 times [2022-01-19 15:30:43,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:43,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83652752] [2022-01-19 15:30:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:43,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:43,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792127655] [2022-01-19 15:30:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:43,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:43,444 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) [2022-01-19 15:30:43,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 15:30:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:43,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:43,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:43,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:43,767 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:43,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:43,790 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:43,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:43,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:43,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:44,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:44,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 15:30:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:44,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:44,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83652752] [2022-01-19 15:30:44,924 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792127655] [2022-01-19 15:30:44,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792127655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:44,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:44,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 15:30:44,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863821849] [2022-01-19 15:30:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:44,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 15:30:44,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 15:30:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-19 15:30:44,926 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:44,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 383 transitions, 3657 flow. Second operand has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:44,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:44,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:44,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:47,927 INFO L129 PetriNetUnfolder]: 6445/17186 cut-off events. [2022-01-19 15:30:47,927 INFO L130 PetriNetUnfolder]: For 153201/153347 co-relation queries the response was YES. [2022-01-19 15:30:48,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73574 conditions, 17186 events. 6445/17186 cut-off events. For 153201/153347 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 166388 event pairs, 2378 based on Foata normal form. 26/16264 useless extension candidates. Maximal degree in co-relation 70386. Up to 8086 conditions per place. [2022-01-19 15:30:48,142 INFO L132 encePairwiseOnDemand]: 127/150 looper letters, 327 selfloop transitions, 102 changer transitions 3/511 dead transitions. [2022-01-19 15:30:48,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 511 transitions, 5578 flow [2022-01-19 15:30:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 15:30:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 15:30:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1762 transitions. [2022-01-19 15:30:48,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6182456140350877 [2022-01-19 15:30:48,147 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1762 transitions. [2022-01-19 15:30:48,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1762 transitions. [2022-01-19 15:30:48,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:48,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1762 transitions. [2022-01-19 15:30:48,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 92.73684210526316) internal successors, (1762), 19 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:48,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 150.0) internal successors, (3000), 20 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:48,153 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 150.0) internal successors, (3000), 20 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:48,153 INFO L186 Difference]: Start difference. First operand has 292 places, 383 transitions, 3657 flow. Second operand 19 states and 1762 transitions. [2022-01-19 15:30:48,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 511 transitions, 5578 flow [2022-01-19 15:30:48,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 511 transitions, 5167 flow, removed 202 selfloop flow, removed 4 redundant places. [2022-01-19 15:30:48,580 INFO L242 Difference]: Finished difference. Result has 314 places, 423 transitions, 3983 flow [2022-01-19 15:30:48,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3983, PETRI_PLACES=314, PETRI_TRANSITIONS=423} [2022-01-19 15:30:48,580 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 179 predicate places. [2022-01-19 15:30:48,580 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 423 transitions, 3983 flow [2022-01-19 15:30:48,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:48,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:48,581 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:48,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-19 15:30:48,781 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash -838311545, now seen corresponding path program 1 times [2022-01-19 15:30:48,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330238727] [2022-01-19 15:30:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:48,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:48,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:48,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100178123] [2022-01-19 15:30:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:48,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:48,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:48,803 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) [2022-01-19 15:30:48,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 15:30:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:30:49,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:49,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:49,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:49,148 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:49,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:49,168 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:49,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:49,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:49,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:49,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:49,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 15:30:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:50,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:50,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:50,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330238727] [2022-01-19 15:30:50,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:50,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100178123] [2022-01-19 15:30:50,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100178123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:50,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:50,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 15:30:50,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333697632] [2022-01-19 15:30:50,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:50,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 15:30:50,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 15:30:50,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-19 15:30:50,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:50,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 423 transitions, 3983 flow. Second operand has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:50,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:50,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:50,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:30:54,155 INFO L129 PetriNetUnfolder]: 7237/19396 cut-off events. [2022-01-19 15:30:54,155 INFO L130 PetriNetUnfolder]: For 281475/281848 co-relation queries the response was YES. [2022-01-19 15:30:54,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99366 conditions, 19396 events. 7237/19396 cut-off events. For 281475/281848 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 191360 event pairs, 2879 based on Foata normal form. 40/18414 useless extension candidates. Maximal degree in co-relation 97057. Up to 6876 conditions per place. [2022-01-19 15:30:54,383 INFO L132 encePairwiseOnDemand]: 130/150 looper letters, 410 selfloop transitions, 125 changer transitions 0/614 dead transitions. [2022-01-19 15:30:54,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 614 transitions, 7310 flow [2022-01-19 15:30:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 15:30:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 15:30:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2022-01-19 15:30:54,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6296666666666667 [2022-01-19 15:30:54,386 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2022-01-19 15:30:54,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2022-01-19 15:30:54,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:30:54,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2022-01-19 15:30:54,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:54,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:54,391 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:54,391 INFO L186 Difference]: Start difference. First operand has 314 places, 423 transitions, 3983 flow. Second operand 20 states and 1889 transitions. [2022-01-19 15:30:54,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 614 transitions, 7310 flow [2022-01-19 15:30:54,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 614 transitions, 6955 flow, removed 142 selfloop flow, removed 8 redundant places. [2022-01-19 15:30:54,911 INFO L242 Difference]: Finished difference. Result has 335 places, 464 transitions, 4820 flow [2022-01-19 15:30:54,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4820, PETRI_PLACES=335, PETRI_TRANSITIONS=464} [2022-01-19 15:30:54,914 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 200 predicate places. [2022-01-19 15:30:54,914 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 464 transitions, 4820 flow [2022-01-19 15:30:54,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.6470588235294) internal successors, (1456), 17 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:54,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:30:54,914 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:30:54,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 15:30:55,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:55,123 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:30:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:30:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1389769095, now seen corresponding path program 2 times [2022-01-19 15:30:55,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:30:55,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296817586] [2022-01-19 15:30:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:30:55,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:30:55,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:30:55,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250431698] [2022-01-19 15:30:55,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 15:30:55,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:30:55,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:30:55,142 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) [2022-01-19 15:30:55,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 15:30:55,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 15:30:55,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:30:55,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:30:55,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:30:55,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:30:55,505 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:30:55,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:30:55,526 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:30:55,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:30:55,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:55,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:30:55,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:30:55,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-01-19 15:30:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:30:56,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:30:56,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:30:56,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296817586] [2022-01-19 15:30:56,048 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:30:56,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250431698] [2022-01-19 15:30:56,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250431698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:30:56,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:30:56,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 15:30:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845008437] [2022-01-19 15:30:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:30:56,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 15:30:56,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:30:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 15:30:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-19 15:30:56,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:30:56,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 464 transitions, 4820 flow. Second operand has 16 states, 16 states have (on average 85.8125) internal successors, (1373), 16 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:30:56,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:30:56,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:30:56,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:31:00,135 INFO L129 PetriNetUnfolder]: 7393/19698 cut-off events. [2022-01-19 15:31:00,135 INFO L130 PetriNetUnfolder]: For 404353/404713 co-relation queries the response was YES. [2022-01-19 15:31:00,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111482 conditions, 19698 events. 7393/19698 cut-off events. For 404353/404713 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 194539 event pairs, 2821 based on Foata normal form. 27/18674 useless extension candidates. Maximal degree in co-relation 108905. Up to 9764 conditions per place. [2022-01-19 15:31:00,481 INFO L132 encePairwiseOnDemand]: 129/150 looper letters, 409 selfloop transitions, 90 changer transitions 7/585 dead transitions. [2022-01-19 15:31:00,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 585 transitions, 7345 flow [2022-01-19 15:31:00,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 15:31:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 15:31:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1584 transitions. [2022-01-19 15:31:00,484 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2022-01-19 15:31:00,484 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1584 transitions. [2022-01-19 15:31:00,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1584 transitions. [2022-01-19 15:31:00,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:31:00,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1584 transitions. [2022-01-19 15:31:00,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 93.17647058823529) internal successors, (1584), 17 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:00,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 150.0) internal successors, (2700), 18 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:00,488 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 150.0) internal successors, (2700), 18 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:00,488 INFO L186 Difference]: Start difference. First operand has 335 places, 464 transitions, 4820 flow. Second operand 17 states and 1584 transitions. [2022-01-19 15:31:00,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 585 transitions, 7345 flow [2022-01-19 15:31:01,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 585 transitions, 7073 flow, removed 109 selfloop flow, removed 7 redundant places. [2022-01-19 15:31:01,244 INFO L242 Difference]: Finished difference. Result has 348 places, 483 transitions, 5032 flow [2022-01-19 15:31:01,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5032, PETRI_PLACES=348, PETRI_TRANSITIONS=483} [2022-01-19 15:31:01,245 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 213 predicate places. [2022-01-19 15:31:01,245 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 483 transitions, 5032 flow [2022-01-19 15:31:01,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.8125) internal successors, (1373), 16 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:01,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:31:01,246 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:31:01,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 15:31:01,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-19 15:31:01,476 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:31:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:31:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1203170670, now seen corresponding path program 1 times [2022-01-19 15:31:01,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:31:01,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201115627] [2022-01-19 15:31:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:31:01,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:31:01,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:31:01,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996865080] [2022-01-19 15:31:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:31:01,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:31:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:31:01,488 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) [2022-01-19 15:31:01,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 15:31:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:31:01,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 15:31:01,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:31:01,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 15:31:01,799 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 15:31:01,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 15:31:01,830 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:31:01,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 15:31:01,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:31:01,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 15:31:02,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 15:31:02,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-01-19 15:31:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:31:02,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:31:02,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:31:02,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201115627] [2022-01-19 15:31:02,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:31:02,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996865080] [2022-01-19 15:31:02,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996865080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:31:02,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:31:02,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 15:31:02,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574885935] [2022-01-19 15:31:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:31:02,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 15:31:02,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:31:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 15:31:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-01-19 15:31:02,355 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2022-01-19 15:31:02,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 483 transitions, 5032 flow. Second operand has 16 states, 16 states have (on average 85.875) internal successors, (1374), 16 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:02,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:31:02,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2022-01-19 15:31:02,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:31:07,116 INFO L129 PetriNetUnfolder]: 7988/21293 cut-off events. [2022-01-19 15:31:07,117 INFO L130 PetriNetUnfolder]: For 454827/455241 co-relation queries the response was YES. [2022-01-19 15:31:07,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123240 conditions, 21293 events. 7988/21293 cut-off events. For 454827/455241 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 213487 event pairs, 3169 based on Foata normal form. 37/20191 useless extension candidates. Maximal degree in co-relation 120548. Up to 8880 conditions per place. [2022-01-19 15:31:07,499 INFO L132 encePairwiseOnDemand]: 131/150 looper letters, 445 selfloop transitions, 111 changer transitions 4/639 dead transitions. [2022-01-19 15:31:07,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 639 transitions, 8439 flow [2022-01-19 15:31:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 15:31:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 15:31:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1965 transitions. [2022-01-19 15:31:07,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2022-01-19 15:31:07,502 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1965 transitions. [2022-01-19 15:31:07,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1965 transitions. [2022-01-19 15:31:07,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:31:07,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1965 transitions. [2022-01-19 15:31:07,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.57142857142857) internal successors, (1965), 21 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:07,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:07,506 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:07,506 INFO L186 Difference]: Start difference. First operand has 348 places, 483 transitions, 5032 flow. Second operand 21 states and 1965 transitions. [2022-01-19 15:31:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 639 transitions, 8439 flow [2022-01-19 15:31:08,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 639 transitions, 8240 flow, removed 49 selfloop flow, removed 9 redundant places. [2022-01-19 15:31:08,258 INFO L242 Difference]: Finished difference. Result has 365 places, 502 transitions, 5567 flow [2022-01-19 15:31:08,259 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=4846, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5567, PETRI_PLACES=365, PETRI_TRANSITIONS=502} [2022-01-19 15:31:08,259 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 230 predicate places. [2022-01-19 15:31:08,259 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 502 transitions, 5567 flow [2022-01-19 15:31:08,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 85.875) internal successors, (1374), 16 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:08,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:31:08,260 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:31:08,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 15:31:08,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-19 15:31:08,460 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:31:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:31:08,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1059883649, now seen corresponding path program 1 times [2022-01-19 15:31:08,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:31:08,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587695371] [2022-01-19 15:31:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:31:08,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:31:08,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:31:08,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313163329] [2022-01-19 15:31:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:31:08,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:31:08,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:31:08,544 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) [2022-01-19 15:31:08,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 15:31:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:31:08,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-19 15:31:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:31:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:31:08,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 15:31:08,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:31:08,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587695371] [2022-01-19 15:31:08,763 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 15:31:08,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313163329] [2022-01-19 15:31:08,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313163329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 15:31:08,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 15:31:08,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 15:31:08,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937938584] [2022-01-19 15:31:08,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 15:31:08,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 15:31:08,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:31:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 15:31:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 15:31:08,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 150 [2022-01-19 15:31:08,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 502 transitions, 5567 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:08,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:31:08,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 150 [2022-01-19 15:31:08,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:31:10,625 INFO L129 PetriNetUnfolder]: 2249/9425 cut-off events. [2022-01-19 15:31:10,625 INFO L130 PetriNetUnfolder]: For 172204/173626 co-relation queries the response was YES. [2022-01-19 15:31:10,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48430 conditions, 9425 events. 2249/9425 cut-off events. For 172204/173626 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 95038 event pairs, 1142 based on Foata normal form. 47/8833 useless extension candidates. Maximal degree in co-relation 48324. Up to 1790 conditions per place. [2022-01-19 15:31:10,743 INFO L132 encePairwiseOnDemand]: 144/150 looper letters, 23 selfloop transitions, 5 changer transitions 10/435 dead transitions. [2022-01-19 15:31:10,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 435 transitions, 4771 flow [2022-01-19 15:31:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 15:31:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 15:31:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2022-01-19 15:31:10,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222222222222223 [2022-01-19 15:31:10,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2022-01-19 15:31:10,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2022-01-19 15:31:10,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:31:10,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2022-01-19 15:31:10,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:10,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:10,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:10,745 INFO L186 Difference]: Start difference. First operand has 365 places, 502 transitions, 5567 flow. Second operand 3 states and 415 transitions. [2022-01-19 15:31:10,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 435 transitions, 4771 flow [2022-01-19 15:31:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 435 transitions, 4321 flow, removed 166 selfloop flow, removed 19 redundant places. [2022-01-19 15:31:11,080 INFO L242 Difference]: Finished difference. Result has 340 places, 423 transitions, 4135 flow [2022-01-19 15:31:11,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4135, PETRI_PLACES=340, PETRI_TRANSITIONS=423} [2022-01-19 15:31:11,080 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 205 predicate places. [2022-01-19 15:31:11,081 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 423 transitions, 4135 flow [2022-01-19 15:31:11,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:31:11,081 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:31:11,081 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:31:11,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-19 15:31:11,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 15:31:11,295 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 15:31:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:31:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2131978286, now seen corresponding path program 1 times [2022-01-19 15:31:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:31:11,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012410364] [2022-01-19 15:31:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:31:11,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:31:11,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 15:31:11,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411511425] [2022-01-19 15:31:11,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:31:11,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:31:11,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:31:11,309 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) [2022-01-19 15:31:11,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 15:31:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 15:31:11,657 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 15:31:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 15:31:11,761 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 15:31:11,761 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 15:31:11,761 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-19 15:31:11,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-01-19 15:31:11,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 6 remaining) [2022-01-19 15:31:11,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-19 15:31:11,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-19 15:31:11,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-19 15:31:11,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-19 15:31:11,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 15:31:11,982 INFO L732 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:31:11,985 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 15:31:11,985 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 15:31:12,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 03:31:12 BasicIcfg [2022-01-19 15:31:12,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 15:31:12,050 INFO L158 Benchmark]: Toolchain (without parser) took 48970.54ms. Allocated memory was 440.4MB in the beginning and 9.9GB in the end (delta: 9.4GB). Free memory was 384.4MB in the beginning and 7.2GB in the end (delta: -6.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2022-01-19 15:31:12,050 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 440.4MB. Free memory is still 402.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:31:12,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.79ms. Allocated memory was 440.4MB in the beginning and 595.6MB in the end (delta: 155.2MB). Free memory was 384.2MB in the beginning and 557.7MB in the end (delta: -173.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.0GB. [2022-01-19 15:31:12,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.22ms. Allocated memory is still 595.6MB. Free memory was 557.7MB in the beginning and 555.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 15:31:12,050 INFO L158 Benchmark]: Boogie Preprocessor took 27.79ms. Allocated memory is still 595.6MB. Free memory was 555.6MB in the beginning and 554.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:31:12,050 INFO L158 Benchmark]: RCFGBuilder took 362.13ms. Allocated memory is still 595.6MB. Free memory was 554.6MB in the beginning and 535.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 15:31:12,051 INFO L158 Benchmark]: TraceAbstraction took 48222.53ms. Allocated memory was 595.6MB in the beginning and 9.9GB in the end (delta: 9.3GB). Free memory was 534.7MB in the beginning and 7.2GB in the end (delta: -6.7GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2022-01-19 15:31:12,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 440.4MB. Free memory is still 402.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 309.79ms. Allocated memory was 440.4MB in the beginning and 595.6MB in the end (delta: 155.2MB). Free memory was 384.2MB in the beginning and 557.7MB in the end (delta: -173.6MB). Peak memory consumption was 6.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.22ms. Allocated memory is still 595.6MB. Free memory was 557.7MB in the beginning and 555.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.79ms. Allocated memory is still 595.6MB. Free memory was 555.6MB in the beginning and 554.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 362.13ms. Allocated memory is still 595.6MB. Free memory was 554.6MB in the beginning and 535.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 48222.53ms. Allocated memory was 595.6MB in the beginning and 9.9GB in the end (delta: 9.3GB). Free memory was 534.7MB in the beginning and 7.2GB in the end (delta: -6.7GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; VAL [buffer={3:0}] [L683] 0 static unsigned int first; VAL [buffer={3:0}, first=0] [L684] 0 static unsigned int next; VAL [buffer={3:0}, first=0, next=0] [L685] 0 static int buffer_size; VAL [buffer={3:0}, buffer_size=0, first=0, next=0] [L686] 0 _Bool send, receive; VAL [buffer={3:0}, buffer_size=0, first=0, next=0, receive=0, send=0] [L687] 0 pthread_mutex_t m; VAL [buffer={3:0}, buffer_size=0, first=0, m={4:0}, next=0, receive=0, send=0] [L756] 0 pthread_t id1, id2; VAL [buffer={3:0}, buffer_size=0, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=0] [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] EXPR 0 next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L691] 0 first = next = 0 VAL [\old(max)=10, buffer={3:0}, buffer_size=10, first=0, m={4:0}, max=10, next=0, receive=0, send=0] [L758] RET 0 initLog(10) [L759] 0 send=1 VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L760] 0 receive=0 VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=2, receive=0, send=1] [L723] 1 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=3, receive=0, send=1] [L739] 2 int i; VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, i++=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, i++=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=1, send=0] [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] VAL [buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] 2 return buffer[first-1]; VAL [\result=0, buffer={3:0}, buffer[first-1]=0, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, removeLogElement()=0, send=0] [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 48.0s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3487 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3487 mSDsluCounter, 4132 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3220 IncrementalHoareTripleChecker+Unchecked, 3815 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2440 IncrementalHoareTripleChecker+Invalid, 5900 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 725 mSDtfsCounter, 2440 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1331 GetRequests, 1049 SyntacticMatches, 5 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5567occurred in iteration=14, InterpolantAutomatonStates: 209, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 1556 NumberOfCodeBlocks, 1556 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1432 ConstructedInterpolants, 198 QuantifiedInterpolants, 17837 SizeOfPredicates, 134 NumberOfNonLiveVariables, 3184 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-19 15:31:12,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...