/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/security.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:50:36,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:50:36,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:50:36,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:50:36,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:50:36,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:50:36,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:50:36,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:50:36,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:50:36,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:50:36,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:50:36,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:50:36,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:50:36,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:50:36,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:50:36,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:50:36,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:50:36,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:50:36,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:50:36,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:50:36,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:50:36,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:50:36,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:50:36,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:50:36,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 02:50:36,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:50:36,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:50:36,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:50:36,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:50:36,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:50:36,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:50:36,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:50:36,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:50:36,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:50:36,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:50:36,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:50:36,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 02:50:36,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:50:36,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:50:36,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:50:36,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:50:36,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:50:36,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:50:36,443 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:50:36,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:50:36,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:50:36,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:50:36,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:50:36,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:50:36,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:50:36,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:50:36,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:50:36,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:50:36,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:50:36,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:50:36,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:50:36,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:50:36,447 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:50:36,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:50:36,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:50:36,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:50:36,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:50:36,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:50:36,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:50:36,643 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:50:36,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/security.wvr.c [2022-01-19 02:50:36,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee71444c/555b613673e147d18c109f2db5bc7db7/FLAG65e70172b [2022-01-19 02:50:37,054 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:50:37,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c [2022-01-19 02:50:37,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee71444c/555b613673e147d18c109f2db5bc7db7/FLAG65e70172b [2022-01-19 02:50:37,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee71444c/555b613673e147d18c109f2db5bc7db7 [2022-01-19 02:50:37,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:50:37,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:50:37,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:50:37,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:50:37,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:50:37,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f393ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37, skipping insertion in model container [2022-01-19 02:50:37,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:50:37,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:50:37,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c[1931,1944] [2022-01-19 02:50:37,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:50:37,225 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:50:37,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c[1931,1944] [2022-01-19 02:50:37,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:50:37,244 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:50:37,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37 WrapperNode [2022-01-19 02:50:37,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:50:37,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:50:37,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:50:37,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:50:37,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,277 INFO L137 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-01-19 02:50:37,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:50:37,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:50:37,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:50:37,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:50:37,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:50:37,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:50:37,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:50:37,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:50:37,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (1/1) ... [2022-01-19 02:50:37,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:50:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:50:37,332 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 02:50:37,348 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 02:50:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:50:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:50:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:50:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:50:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:50:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:50:37,360 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 02:50:37,421 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:50:37,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:50:37,546 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:50:37,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:50:37,554 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 02:50:37,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:50:37 BoogieIcfgContainer [2022-01-19 02:50:37,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:50:37,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:50:37,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:50:37,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:50:37,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:50:37" (1/3) ... [2022-01-19 02:50:37,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fd1340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:50:37, skipping insertion in model container [2022-01-19 02:50:37,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:50:37" (2/3) ... [2022-01-19 02:50:37,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fd1340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:50:37, skipping insertion in model container [2022-01-19 02:50:37,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:50:37" (3/3) ... [2022-01-19 02:50:37,562 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2022-01-19 02:50:37,566 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:50:37,566 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:50:37,566 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:50:37,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,590 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,592 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,592 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:50:37,600 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 02:50:37,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:50:37,635 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 02:50:37,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 02:50:37,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 81 transitions, 178 flow [2022-01-19 02:50:37,695 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2022-01-19 02:50:37,695 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:50:37,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 3/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-01-19 02:50:37,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 81 transitions, 178 flow [2022-01-19 02:50:37,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2022-01-19 02:50:37,722 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2022-01-19 02:50:37,723 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 02:50:37,723 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:37,723 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] [2022-01-19 02:50:37,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1803071327, now seen corresponding path program 1 times [2022-01-19 02:50:37,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:37,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333578604] [2022-01-19 02:50:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:37,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:38,185 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 02:50:38,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:38,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333578604] [2022-01-19 02:50:38,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333578604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:38,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:38,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215767431] [2022-01-19 02:50:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:38,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:38,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:38,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:38,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:38,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 152 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:38,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:38,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:38,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:38,585 INFO L129 PetriNetUnfolder]: 32/219 cut-off events. [2022-01-19 02:50:38,585 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2022-01-19 02:50:38,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 219 events. 32/219 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 894 event pairs, 11 based on Foata normal form. 5/212 useless extension candidates. Maximal degree in co-relation 170. Up to 47 conditions per place. [2022-01-19 02:50:38,589 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 34 selfloop transitions, 2 changer transitions 24/106 dead transitions. [2022-01-19 02:50:38,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 377 flow [2022-01-19 02:50:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 02:50:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 02:50:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 906 transitions. [2022-01-19 02:50:38,617 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.745679012345679 [2022-01-19 02:50:38,617 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 906 transitions. [2022-01-19 02:50:38,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 906 transitions. [2022-01-19 02:50:38,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:38,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 906 transitions. [2022-01-19 02:50:38,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 60.4) internal successors, (906), 15 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 02:50:38,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 02:50:38,631 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 02:50:38,632 INFO L186 Difference]: Start difference. First operand has 74 places, 70 transitions, 152 flow. Second operand 15 states and 906 transitions. [2022-01-19 02:50:38,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 377 flow [2022-01-19 02:50:38,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 347 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:50:38,637 INFO L242 Difference]: Finished difference. Result has 95 places, 69 transitions, 175 flow [2022-01-19 02:50:38,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=175, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2022-01-19 02:50:38,641 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-01-19 02:50:38,641 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 175 flow [2022-01-19 02:50:38,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:38,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:38,642 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] [2022-01-19 02:50:38,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:50:38,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1262948190, now seen corresponding path program 1 times [2022-01-19 02:50:38,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:38,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195967019] [2022-01-19 02:50:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:38,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:38,793 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 02:50:38,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:38,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195967019] [2022-01-19 02:50:38,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195967019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:38,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:38,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 02:50:38,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890331554] [2022-01-19 02:50:38,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:38,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:50:38,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:38,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:50:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:50:38,799 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-01-19 02:50:38,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 175 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 02:50:38,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:38,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-01-19 02:50:38,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:38,949 INFO L129 PetriNetUnfolder]: 21/184 cut-off events. [2022-01-19 02:50:38,949 INFO L130 PetriNetUnfolder]: For 99/103 co-relation queries the response was YES. [2022-01-19 02:50:38,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 184 events. 21/184 cut-off events. For 99/103 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 647 event pairs, 8 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 336. Up to 39 conditions per place. [2022-01-19 02:50:38,952 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 3 changer transitions 6/94 dead transitions. [2022-01-19 02:50:38,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 94 transitions, 379 flow [2022-01-19 02:50:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:50:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:50:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 511 transitions. [2022-01-19 02:50:38,954 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7885802469135802 [2022-01-19 02:50:38,954 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 511 transitions. [2022-01-19 02:50:38,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 511 transitions. [2022-01-19 02:50:38,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:38,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 511 transitions. [2022-01-19 02:50:38,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.875) internal successors, (511), 8 states have internal predecessors, (511), 0 states have call successors, (0), 0 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 02:50:38,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 02:50:38,957 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 02:50:38,957 INFO L186 Difference]: Start difference. First operand has 95 places, 69 transitions, 175 flow. Second operand 8 states and 511 transitions. [2022-01-19 02:50:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 94 transitions, 379 flow [2022-01-19 02:50:38,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 314 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-01-19 02:50:38,962 INFO L242 Difference]: Finished difference. Result has 86 places, 71 transitions, 183 flow [2022-01-19 02:50:38,962 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2022-01-19 02:50:38,963 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2022-01-19 02:50:38,963 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 183 flow [2022-01-19 02:50:38,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 02:50:38,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:38,965 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] [2022-01-19 02:50:38,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:50:38,965 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1033469356, now seen corresponding path program 2 times [2022-01-19 02:50:38,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:38,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127551816] [2022-01-19 02:50:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:38,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:39,110 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 02:50:39,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:39,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127551816] [2022-01-19 02:50:39,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127551816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:39,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:39,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 02:50:39,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360518866] [2022-01-19 02:50:39,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:39,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:50:39,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:39,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:50:39,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:50:39,115 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-01-19 02:50:39,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 183 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 02:50:39,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:39,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-01-19 02:50:39,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:39,245 INFO L129 PetriNetUnfolder]: 25/241 cut-off events. [2022-01-19 02:50:39,245 INFO L130 PetriNetUnfolder]: For 111/115 co-relation queries the response was YES. [2022-01-19 02:50:39,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 241 events. 25/241 cut-off events. For 111/115 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1129 event pairs, 16 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 427. Up to 61 conditions per place. [2022-01-19 02:50:39,246 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 34 selfloop transitions, 4 changer transitions 7/93 dead transitions. [2022-01-19 02:50:39,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 366 flow [2022-01-19 02:50:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:50:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:50:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2022-01-19 02:50:39,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.779320987654321 [2022-01-19 02:50:39,248 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2022-01-19 02:50:39,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2022-01-19 02:50:39,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:39,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2022-01-19 02:50:39,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 02:50:39,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 02:50:39,251 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 02:50:39,251 INFO L186 Difference]: Start difference. First operand has 86 places, 71 transitions, 183 flow. Second operand 8 states and 505 transitions. [2022-01-19 02:50:39,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 366 flow [2022-01-19 02:50:39,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 347 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 02:50:39,253 INFO L242 Difference]: Finished difference. Result has 92 places, 72 transitions, 206 flow [2022-01-19 02:50:39,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2022-01-19 02:50:39,254 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2022-01-19 02:50:39,254 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 206 flow [2022-01-19 02:50:39,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 02:50:39,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:39,255 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] [2022-01-19 02:50:39,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:50:39,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1244957747, now seen corresponding path program 2 times [2022-01-19 02:50:39,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410525309] [2022-01-19 02:50:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:39,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:39,372 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 02:50:39,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:39,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410525309] [2022-01-19 02:50:39,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410525309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:39,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:39,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:39,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961329745] [2022-01-19 02:50:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:39,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:39,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:39,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:39,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:39,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 206 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:39,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:39,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:39,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:39,518 INFO L129 PetriNetUnfolder]: 28/290 cut-off events. [2022-01-19 02:50:39,518 INFO L130 PetriNetUnfolder]: For 250/251 co-relation queries the response was YES. [2022-01-19 02:50:39,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 290 events. 28/290 cut-off events. For 250/251 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1530 event pairs, 5 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 563. Up to 65 conditions per place. [2022-01-19 02:50:39,520 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 6 changer transitions 8/98 dead transitions. [2022-01-19 02:50:39,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 438 flow [2022-01-19 02:50:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-01-19 02:50:39,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-01-19 02:50:39,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-01-19 02:50:39,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-01-19 02:50:39,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:39,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-01-19 02:50:39,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 02:50:39,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:39,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:39,525 INFO L186 Difference]: Start difference. First operand has 92 places, 72 transitions, 206 flow. Second operand 9 states and 549 transitions. [2022-01-19 02:50:39,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 438 flow [2022-01-19 02:50:39,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 98 transitions, 406 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:39,529 INFO L242 Difference]: Finished difference. Result has 97 places, 74 transitions, 243 flow [2022-01-19 02:50:39,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=243, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2022-01-19 02:50:39,529 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2022-01-19 02:50:39,530 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 243 flow [2022-01-19 02:50:39,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:39,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:39,530 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] [2022-01-19 02:50:39,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:50:39,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:39,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:39,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1661894565, now seen corresponding path program 3 times [2022-01-19 02:50:39,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:39,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987308518] [2022-01-19 02:50:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:39,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:39,663 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 02:50:39,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:39,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987308518] [2022-01-19 02:50:39,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987308518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:39,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:39,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:39,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816809059] [2022-01-19 02:50:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:39,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:39,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:39,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:39,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 243 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:39,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:39,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:39,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:39,812 INFO L129 PetriNetUnfolder]: 30/343 cut-off events. [2022-01-19 02:50:39,812 INFO L130 PetriNetUnfolder]: For 415/416 co-relation queries the response was YES. [2022-01-19 02:50:39,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 343 events. 30/343 cut-off events. For 415/416 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2027 event pairs, 23 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 704. Up to 62 conditions per place. [2022-01-19 02:50:39,814 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 47 selfloop transitions, 4 changer transitions 9/106 dead transitions. [2022-01-19 02:50:39,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 523 flow [2022-01-19 02:50:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2022-01-19 02:50:39,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2022-01-19 02:50:39,817 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2022-01-19 02:50:39,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2022-01-19 02:50:39,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:39,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2022-01-19 02:50:39,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 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 02:50:39,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:39,821 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:39,821 INFO L186 Difference]: Start difference. First operand has 97 places, 74 transitions, 243 flow. Second operand 9 states and 558 transitions. [2022-01-19 02:50:39,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 523 flow [2022-01-19 02:50:39,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 106 transitions, 488 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:39,825 INFO L242 Difference]: Finished difference. Result has 104 places, 76 transitions, 272 flow [2022-01-19 02:50:39,825 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=104, PETRI_TRANSITIONS=76} [2022-01-19 02:50:39,827 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-01-19 02:50:39,827 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 76 transitions, 272 flow [2022-01-19 02:50:39,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:39,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:39,828 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] [2022-01-19 02:50:39,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:50:39,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash 407443089, now seen corresponding path program 4 times [2022-01-19 02:50:39,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:39,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427553168] [2022-01-19 02:50:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:39,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:39,936 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 02:50:39,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:39,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427553168] [2022-01-19 02:50:39,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427553168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:39,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:39,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:39,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161449043] [2022-01-19 02:50:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:39,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:39,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:39,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:39,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 76 transitions, 272 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:39,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:39,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:39,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:40,114 INFO L129 PetriNetUnfolder]: 27/352 cut-off events. [2022-01-19 02:50:40,115 INFO L130 PetriNetUnfolder]: For 511/513 co-relation queries the response was YES. [2022-01-19 02:50:40,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 352 events. 27/352 cut-off events. For 511/513 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2126 event pairs, 7 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 754. Up to 73 conditions per place. [2022-01-19 02:50:40,116 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 51 selfloop transitions, 6 changer transitions 10/113 dead transitions. [2022-01-19 02:50:40,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 600 flow [2022-01-19 02:50:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 561 transitions. [2022-01-19 02:50:40,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7695473251028807 [2022-01-19 02:50:40,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 561 transitions. [2022-01-19 02:50:40,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 561 transitions. [2022-01-19 02:50:40,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:40,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 561 transitions. [2022-01-19 02:50:40,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.333333333333336) internal successors, (561), 9 states have internal predecessors, (561), 0 states have call successors, (0), 0 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 02:50:40,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:40,120 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:40,121 INFO L186 Difference]: Start difference. First operand has 104 places, 76 transitions, 272 flow. Second operand 9 states and 561 transitions. [2022-01-19 02:50:40,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 600 flow [2022-01-19 02:50:40,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 113 transitions, 559 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:40,124 INFO L242 Difference]: Finished difference. Result has 110 places, 79 transitions, 330 flow [2022-01-19 02:50:40,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2022-01-19 02:50:40,126 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 36 predicate places. [2022-01-19 02:50:40,126 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 330 flow [2022-01-19 02:50:40,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:40,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:40,130 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] [2022-01-19 02:50:40,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 02:50:40,131 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash 741952778, now seen corresponding path program 3 times [2022-01-19 02:50:40,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:40,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142371954] [2022-01-19 02:50:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:40,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:40,242 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 02:50:40,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:40,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142371954] [2022-01-19 02:50:40,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142371954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:40,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:40,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 02:50:40,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217758369] [2022-01-19 02:50:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:50:40,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:50:40,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:50:40,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 81 [2022-01-19 02:50:40,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 02:50:40,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:40,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 81 [2022-01-19 02:50:40,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:40,347 INFO L129 PetriNetUnfolder]: 22/306 cut-off events. [2022-01-19 02:50:40,347 INFO L130 PetriNetUnfolder]: For 582/589 co-relation queries the response was YES. [2022-01-19 02:50:40,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 306 events. 22/306 cut-off events. For 582/589 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1676 event pairs, 19 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 675. Up to 70 conditions per place. [2022-01-19 02:50:40,349 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 35 selfloop transitions, 3 changer transitions 10/97 dead transitions. [2022-01-19 02:50:40,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 97 transitions, 518 flow [2022-01-19 02:50:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:50:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:50:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2022-01-19 02:50:40,350 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.779320987654321 [2022-01-19 02:50:40,350 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2022-01-19 02:50:40,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2022-01-19 02:50:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:40,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2022-01-19 02:50:40,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 02:50:40,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 02:50:40,353 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 02:50:40,353 INFO L186 Difference]: Start difference. First operand has 110 places, 79 transitions, 330 flow. Second operand 8 states and 505 transitions. [2022-01-19 02:50:40,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 97 transitions, 518 flow [2022-01-19 02:50:40,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 97 transitions, 488 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-01-19 02:50:40,356 INFO L242 Difference]: Finished difference. Result has 114 places, 77 transitions, 302 flow [2022-01-19 02:50:40,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=114, PETRI_TRANSITIONS=77} [2022-01-19 02:50:40,357 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 40 predicate places. [2022-01-19 02:50:40,357 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 77 transitions, 302 flow [2022-01-19 02:50:40,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 02:50:40,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:40,358 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] [2022-01-19 02:50:40,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 02:50:40,358 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -848346999, now seen corresponding path program 5 times [2022-01-19 02:50:40,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739144687] [2022-01-19 02:50:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:40,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:40,469 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 02:50:40,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:40,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739144687] [2022-01-19 02:50:40,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739144687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:40,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:40,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:40,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065617373] [2022-01-19 02:50:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:40,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:40,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:40,471 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:40,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 77 transitions, 302 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:40,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:40,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:40,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:40,595 INFO L129 PetriNetUnfolder]: 23/301 cut-off events. [2022-01-19 02:50:40,595 INFO L130 PetriNetUnfolder]: For 481/482 co-relation queries the response was YES. [2022-01-19 02:50:40,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 301 events. 23/301 cut-off events. For 481/482 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1659 event pairs, 19 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 657. Up to 62 conditions per place. [2022-01-19 02:50:40,597 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 42 selfloop transitions, 6 changer transitions 8/102 dead transitions. [2022-01-19 02:50:40,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 102 transitions, 532 flow [2022-01-19 02:50:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 555 transitions. [2022-01-19 02:50:40,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2022-01-19 02:50:40,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 555 transitions. [2022-01-19 02:50:40,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 555 transitions. [2022-01-19 02:50:40,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:40,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 555 transitions. [2022-01-19 02:50:40,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.666666666666664) internal successors, (555), 9 states have internal predecessors, (555), 0 states have call successors, (0), 0 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 02:50:40,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:40,601 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:40,601 INFO L186 Difference]: Start difference. First operand has 114 places, 77 transitions, 302 flow. Second operand 9 states and 555 transitions. [2022-01-19 02:50:40,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 102 transitions, 532 flow [2022-01-19 02:50:40,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 493 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-01-19 02:50:40,604 INFO L242 Difference]: Finished difference. Result has 113 places, 78 transitions, 318 flow [2022-01-19 02:50:40,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=318, PETRI_PLACES=113, PETRI_TRANSITIONS=78} [2022-01-19 02:50:40,605 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2022-01-19 02:50:40,605 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 78 transitions, 318 flow [2022-01-19 02:50:40,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:40,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:40,606 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] [2022-01-19 02:50:40,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 02:50:40,606 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:40,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:40,606 INFO L85 PathProgramCache]: Analyzing trace with hash -252513187, now seen corresponding path program 6 times [2022-01-19 02:50:40,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:40,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044800392] [2022-01-19 02:50:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:40,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:40,710 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 02:50:40,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:40,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044800392] [2022-01-19 02:50:40,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044800392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:40,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:40,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:40,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903135793] [2022-01-19 02:50:40,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:40,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:40,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:40,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:40,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 78 transitions, 318 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:40,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:40,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:40,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:40,852 INFO L129 PetriNetUnfolder]: 22/282 cut-off events. [2022-01-19 02:50:40,852 INFO L130 PetriNetUnfolder]: For 489/491 co-relation queries the response was YES. [2022-01-19 02:50:40,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 282 events. 22/282 cut-off events. For 489/491 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1501 event pairs, 20 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 630. Up to 62 conditions per place. [2022-01-19 02:50:40,854 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 34 selfloop transitions, 2 changer transitions 13/95 dead transitions. [2022-01-19 02:50:40,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 95 transitions, 499 flow [2022-01-19 02:50:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-01-19 02:50:40,856 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-01-19 02:50:40,856 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-01-19 02:50:40,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-01-19 02:50:40,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:40,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-01-19 02:50:40,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 02:50:40,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:40,859 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:40,859 INFO L186 Difference]: Start difference. First operand has 113 places, 78 transitions, 318 flow. Second operand 9 states and 548 transitions. [2022-01-19 02:50:40,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 95 transitions, 499 flow [2022-01-19 02:50:40,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 95 transitions, 465 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-01-19 02:50:40,863 INFO L242 Difference]: Finished difference. Result has 115 places, 74 transitions, 264 flow [2022-01-19 02:50:40,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2022-01-19 02:50:40,864 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2022-01-19 02:50:40,864 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 264 flow [2022-01-19 02:50:40,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:40,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:40,865 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] [2022-01-19 02:50:40,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 02:50:40,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:40,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1111681351, now seen corresponding path program 7 times [2022-01-19 02:50:40,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:40,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320210021] [2022-01-19 02:50:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:40,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:40,959 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 02:50:40,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:40,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320210021] [2022-01-19 02:50:40,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320210021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:40,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:40,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:40,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833921198] [2022-01-19 02:50:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:40,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:40,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:40,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:40,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:40,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:40,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:40,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:41,121 INFO L129 PetriNetUnfolder]: 20/236 cut-off events. [2022-01-19 02:50:41,122 INFO L130 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2022-01-19 02:50:41,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 236 events. 20/236 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1112 event pairs, 2 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 519. Up to 45 conditions per place. [2022-01-19 02:50:41,123 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 5 changer transitions 9/93 dead transitions. [2022-01-19 02:50:41,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 93 transitions, 446 flow [2022-01-19 02:50:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2022-01-19 02:50:41,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7503429355281207 [2022-01-19 02:50:41,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2022-01-19 02:50:41,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2022-01-19 02:50:41,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:41,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2022-01-19 02:50:41,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 02:50:41,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,128 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,128 INFO L186 Difference]: Start difference. First operand has 115 places, 74 transitions, 264 flow. Second operand 9 states and 547 transitions. [2022-01-19 02:50:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 93 transitions, 446 flow [2022-01-19 02:50:41,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 403 flow, removed 18 selfloop flow, removed 10 redundant places. [2022-01-19 02:50:41,132 INFO L242 Difference]: Finished difference. Result has 108 places, 73 transitions, 251 flow [2022-01-19 02:50:41,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2022-01-19 02:50:41,134 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2022-01-19 02:50:41,134 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 251 flow [2022-01-19 02:50:41,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:41,134 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] [2022-01-19 02:50:41,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 02:50:41,134 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1364185607, now seen corresponding path program 8 times [2022-01-19 02:50:41,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:41,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477188580] [2022-01-19 02:50:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:41,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:50:41,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477188580] [2022-01-19 02:50:41,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477188580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:41,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:41,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:41,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402562080] [2022-01-19 02:50:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:41,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:41,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:41,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:41,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 251 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:41,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:41,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:41,433 INFO L129 PetriNetUnfolder]: 18/211 cut-off events. [2022-01-19 02:50:41,434 INFO L130 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2022-01-19 02:50:41,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 211 events. 18/211 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 870 event pairs, 2 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 455. Up to 45 conditions per place. [2022-01-19 02:50:41,435 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 33 selfloop transitions, 2 changer transitions 11/92 dead transitions. [2022-01-19 02:50:41,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 432 flow [2022-01-19 02:50:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-01-19 02:50:41,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-01-19 02:50:41,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-01-19 02:50:41,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-01-19 02:50:41,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:41,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-01-19 02:50:41,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 02:50:41,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,440 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,440 INFO L186 Difference]: Start difference. First operand has 108 places, 73 transitions, 251 flow. Second operand 9 states and 548 transitions. [2022-01-19 02:50:41,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 432 flow [2022-01-19 02:50:41,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 92 transitions, 381 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-01-19 02:50:41,442 INFO L242 Difference]: Finished difference. Result has 104 places, 70 transitions, 201 flow [2022-01-19 02:50:41,442 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2022-01-19 02:50:41,443 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-01-19 02:50:41,443 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 201 flow [2022-01-19 02:50:41,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,443 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:41,443 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] [2022-01-19 02:50:41,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 02:50:41,443 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1784837601, now seen corresponding path program 9 times [2022-01-19 02:50:41,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:41,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893714101] [2022-01-19 02:50:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:41,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:41,543 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 02:50:41,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:41,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893714101] [2022-01-19 02:50:41,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893714101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:41,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:41,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:41,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676969730] [2022-01-19 02:50:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:41,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:41,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:41,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:41,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:41,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:41,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:41,658 INFO L129 PetriNetUnfolder]: 17/200 cut-off events. [2022-01-19 02:50:41,658 INFO L130 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-01-19 02:50:41,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 200 events. 17/200 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 789 event pairs, 2 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 405. Up to 40 conditions per place. [2022-01-19 02:50:41,661 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 28 selfloop transitions, 5 changer transitions 8/87 dead transitions. [2022-01-19 02:50:41,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 87 transitions, 360 flow [2022-01-19 02:50:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2022-01-19 02:50:41,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7448559670781894 [2022-01-19 02:50:41,662 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2022-01-19 02:50:41,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2022-01-19 02:50:41,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:41,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2022-01-19 02:50:41,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.333333333333336) internal successors, (543), 9 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 02:50:41,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,666 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,666 INFO L186 Difference]: Start difference. First operand has 104 places, 70 transitions, 201 flow. Second operand 9 states and 543 transitions. [2022-01-19 02:50:41,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 87 transitions, 360 flow [2022-01-19 02:50:41,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 327 flow, removed 9 selfloop flow, removed 11 redundant places. [2022-01-19 02:50:41,668 INFO L242 Difference]: Finished difference. Result has 99 places, 70 transitions, 199 flow [2022-01-19 02:50:41,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=199, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2022-01-19 02:50:41,669 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-01-19 02:50:41,669 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 199 flow [2022-01-19 02:50:41,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:41,670 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] [2022-01-19 02:50:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 02:50:41,670 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -322699621, now seen corresponding path program 10 times [2022-01-19 02:50:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:41,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580312829] [2022-01-19 02:50:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:41,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:41,811 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 02:50:41,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:41,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580312829] [2022-01-19 02:50:41,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580312829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:41,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:41,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:41,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114325303] [2022-01-19 02:50:41,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:41,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:41,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:41,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:41,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 199 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:41,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:41,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:41,965 INFO L129 PetriNetUnfolder]: 17/183 cut-off events. [2022-01-19 02:50:41,965 INFO L130 PetriNetUnfolder]: For 98/98 co-relation queries the response was YES. [2022-01-19 02:50:41,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 183 events. 17/183 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 679 event pairs, 2 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 372. Up to 38 conditions per place. [2022-01-19 02:50:41,966 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 25 selfloop transitions, 3 changer transitions 13/85 dead transitions. [2022-01-19 02:50:41,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 85 transitions, 344 flow [2022-01-19 02:50:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2022-01-19 02:50:41,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7434842249657064 [2022-01-19 02:50:41,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2022-01-19 02:50:41,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2022-01-19 02:50:41,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:41,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2022-01-19 02:50:41,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.22222222222222) internal successors, (542), 9 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 02:50:41,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:41,971 INFO L186 Difference]: Start difference. First operand has 99 places, 70 transitions, 199 flow. Second operand 9 states and 542 transitions. [2022-01-19 02:50:41,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 85 transitions, 344 flow [2022-01-19 02:50:41,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 85 transitions, 316 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 02:50:41,973 INFO L242 Difference]: Finished difference. Result has 99 places, 66 transitions, 171 flow [2022-01-19 02:50:41,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=171, PETRI_PLACES=99, PETRI_TRANSITIONS=66} [2022-01-19 02:50:41,974 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-01-19 02:50:41,974 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 66 transitions, 171 flow [2022-01-19 02:50:41,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:41,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:41,975 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] [2022-01-19 02:50:41,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 02:50:41,975 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1253106300, now seen corresponding path program 1 times [2022-01-19 02:50:41,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:41,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989236633] [2022-01-19 02:50:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:41,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:42,099 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 02:50:42,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989236633] [2022-01-19 02:50:42,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989236633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:42,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:42,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:42,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639750219] [2022-01-19 02:50:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:42,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:42,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:42,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:42,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 66 transitions, 171 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:42,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:42,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:42,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:42,319 INFO L129 PetriNetUnfolder]: 26/209 cut-off events. [2022-01-19 02:50:42,320 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-01-19 02:50:42,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 209 events. 26/209 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 812 event pairs, 0 based on Foata normal form. 3/209 useless extension candidates. Maximal degree in co-relation 440. Up to 30 conditions per place. [2022-01-19 02:50:42,321 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 36 selfloop transitions, 3 changer transitions 21/102 dead transitions. [2022-01-19 02:50:42,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 102 transitions, 496 flow [2022-01-19 02:50:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 02:50:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 02:50:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 813 transitions. [2022-01-19 02:50:42,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.716931216931217 [2022-01-19 02:50:42,322 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 813 transitions. [2022-01-19 02:50:42,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 813 transitions. [2022-01-19 02:50:42,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:42,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 813 transitions. [2022-01-19 02:50:42,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.07142857142857) internal successors, (813), 14 states have internal predecessors, (813), 0 states have call successors, (0), 0 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 02:50:42,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 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 02:50:42,326 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 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 02:50:42,326 INFO L186 Difference]: Start difference. First operand has 99 places, 66 transitions, 171 flow. Second operand 14 states and 813 transitions. [2022-01-19 02:50:42,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 102 transitions, 496 flow [2022-01-19 02:50:42,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 407 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-01-19 02:50:42,329 INFO L242 Difference]: Finished difference. Result has 96 places, 66 transitions, 182 flow [2022-01-19 02:50:42,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=182, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2022-01-19 02:50:42,329 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-01-19 02:50:42,329 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 182 flow [2022-01-19 02:50:42,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:42,330 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:42,330 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] [2022-01-19 02:50:42,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 02:50:42,330 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 706603769, now seen corresponding path program 1 times [2022-01-19 02:50:42,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:42,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219288912] [2022-01-19 02:50:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:42,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:42,416 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 02:50:42,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:42,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219288912] [2022-01-19 02:50:42,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219288912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:42,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:42,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:42,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438543376] [2022-01-19 02:50:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:42,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:42,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:42,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:42,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:42,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:42,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:42,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:42,539 INFO L129 PetriNetUnfolder]: 18/196 cut-off events. [2022-01-19 02:50:42,540 INFO L130 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-01-19 02:50:42,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 196 events. 18/196 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 745 event pairs, 8 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 407. Up to 50 conditions per place. [2022-01-19 02:50:42,541 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 35 selfloop transitions, 3 changer transitions 7/89 dead transitions. [2022-01-19 02:50:42,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 390 flow [2022-01-19 02:50:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-01-19 02:50:42,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-01-19 02:50:42,542 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-01-19 02:50:42,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-01-19 02:50:42,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:42,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-01-19 02:50:42,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 02:50:42,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:42,548 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:42,548 INFO L186 Difference]: Start difference. First operand has 96 places, 66 transitions, 182 flow. Second operand 9 states and 548 transitions. [2022-01-19 02:50:42,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 390 flow [2022-01-19 02:50:42,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 322 flow, removed 28 selfloop flow, removed 12 redundant places. [2022-01-19 02:50:42,550 INFO L242 Difference]: Finished difference. Result has 90 places, 68 transitions, 194 flow [2022-01-19 02:50:42,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=90, PETRI_TRANSITIONS=68} [2022-01-19 02:50:42,551 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2022-01-19 02:50:42,551 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 68 transitions, 194 flow [2022-01-19 02:50:42,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:42,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:42,551 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] [2022-01-19 02:50:42,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 02:50:42,552 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1352411004, now seen corresponding path program 2 times [2022-01-19 02:50:42,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:42,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154768209] [2022-01-19 02:50:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:42,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:42,639 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 02:50:42,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154768209] [2022-01-19 02:50:42,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154768209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:42,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:42,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:42,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141661335] [2022-01-19 02:50:42,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:42,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:42,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:42,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:42,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 68 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:42,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:42,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:42,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:42,878 INFO L129 PetriNetUnfolder]: 28/370 cut-off events. [2022-01-19 02:50:42,878 INFO L130 PetriNetUnfolder]: For 233/236 co-relation queries the response was YES. [2022-01-19 02:50:42,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 370 events. 28/370 cut-off events. For 233/236 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2217 event pairs, 4 based on Foata normal form. 5/369 useless extension candidates. Maximal degree in co-relation 762. Up to 52 conditions per place. [2022-01-19 02:50:42,880 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 62 selfloop transitions, 9 changer transitions 13/126 dead transitions. [2022-01-19 02:50:42,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 126 transitions, 624 flow [2022-01-19 02:50:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 02:50:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 02:50:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 945 transitions. [2022-01-19 02:50:42,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2022-01-19 02:50:42,881 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 945 transitions. [2022-01-19 02:50:42,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 945 transitions. [2022-01-19 02:50:42,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:42,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 945 transitions. [2022-01-19 02:50:42,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.0625) internal successors, (945), 16 states have internal predecessors, (945), 0 states have call successors, (0), 0 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 02:50:42,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 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 02:50:42,887 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 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 02:50:42,888 INFO L186 Difference]: Start difference. First operand has 90 places, 68 transitions, 194 flow. Second operand 16 states and 945 transitions. [2022-01-19 02:50:42,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 126 transitions, 624 flow [2022-01-19 02:50:42,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 573 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:42,891 INFO L242 Difference]: Finished difference. Result has 110 places, 75 transitions, 286 flow [2022-01-19 02:50:42,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=286, PETRI_PLACES=110, PETRI_TRANSITIONS=75} [2022-01-19 02:50:42,892 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 36 predicate places. [2022-01-19 02:50:42,893 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 75 transitions, 286 flow [2022-01-19 02:50:42,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:42,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:42,894 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] [2022-01-19 02:50:42,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 02:50:42,894 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash -631538826, now seen corresponding path program 3 times [2022-01-19 02:50:42,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:42,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671611015] [2022-01-19 02:50:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:42,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:43,033 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 02:50:43,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:43,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671611015] [2022-01-19 02:50:43,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671611015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:43,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:43,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:43,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465933541] [2022-01-19 02:50:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:43,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:43,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:43,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:43,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 75 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:43,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:43,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:43,180 INFO L129 PetriNetUnfolder]: 23/361 cut-off events. [2022-01-19 02:50:43,180 INFO L130 PetriNetUnfolder]: For 507/510 co-relation queries the response was YES. [2022-01-19 02:50:43,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 361 events. 23/361 cut-off events. For 507/510 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2202 event pairs, 3 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 859. Up to 84 conditions per place. [2022-01-19 02:50:43,182 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 33 selfloop transitions, 10 changer transitions 12/97 dead transitions. [2022-01-19 02:50:43,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 97 transitions, 534 flow [2022-01-19 02:50:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 583 transitions. [2022-01-19 02:50:43,183 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7197530864197531 [2022-01-19 02:50:43,183 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 583 transitions. [2022-01-19 02:50:43,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 583 transitions. [2022-01-19 02:50:43,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:43,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 583 transitions. [2022-01-19 02:50:43,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 02:50:43,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:43,185 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:43,185 INFO L186 Difference]: Start difference. First operand has 110 places, 75 transitions, 286 flow. Second operand 10 states and 583 transitions. [2022-01-19 02:50:43,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 97 transitions, 534 flow [2022-01-19 02:50:43,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 97 transitions, 504 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-01-19 02:50:43,188 INFO L242 Difference]: Finished difference. Result has 111 places, 75 transitions, 305 flow [2022-01-19 02:50:43,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=111, PETRI_TRANSITIONS=75} [2022-01-19 02:50:43,188 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2022-01-19 02:50:43,188 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 75 transitions, 305 flow [2022-01-19 02:50:43,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,188 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:43,189 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] [2022-01-19 02:50:43,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 02:50:43,189 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1379330042, now seen corresponding path program 4 times [2022-01-19 02:50:43,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:43,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939053785] [2022-01-19 02:50:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:43,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:43,261 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 02:50:43,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939053785] [2022-01-19 02:50:43,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939053785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:43,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:43,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:43,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415735072] [2022-01-19 02:50:43,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:43,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:43,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:43,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:43,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:43,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 75 transitions, 305 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:43,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:43,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:43,427 INFO L129 PetriNetUnfolder]: 28/408 cut-off events. [2022-01-19 02:50:43,427 INFO L130 PetriNetUnfolder]: For 887/890 co-relation queries the response was YES. [2022-01-19 02:50:43,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 408 events. 28/408 cut-off events. For 887/890 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2623 event pairs, 8 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1038. Up to 119 conditions per place. [2022-01-19 02:50:43,429 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 50 selfloop transitions, 6 changer transitions 11/109 dead transitions. [2022-01-19 02:50:43,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 724 flow [2022-01-19 02:50:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 593 transitions. [2022-01-19 02:50:43,430 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7320987654320987 [2022-01-19 02:50:43,430 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 593 transitions. [2022-01-19 02:50:43,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 593 transitions. [2022-01-19 02:50:43,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:43,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 593 transitions. [2022-01-19 02:50:43,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 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 02:50:43,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:43,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:43,432 INFO L186 Difference]: Start difference. First operand has 111 places, 75 transitions, 305 flow. Second operand 10 states and 593 transitions. [2022-01-19 02:50:43,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 724 flow [2022-01-19 02:50:43,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 657 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-01-19 02:50:43,434 INFO L242 Difference]: Finished difference. Result has 114 places, 77 transitions, 327 flow [2022-01-19 02:50:43,435 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=327, PETRI_PLACES=114, PETRI_TRANSITIONS=77} [2022-01-19 02:50:43,435 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 40 predicate places. [2022-01-19 02:50:43,435 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 77 transitions, 327 flow [2022-01-19 02:50:43,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:43,435 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] [2022-01-19 02:50:43,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 02:50:43,436 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1732848334, now seen corresponding path program 5 times [2022-01-19 02:50:43,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:43,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316081993] [2022-01-19 02:50:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:43,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:43,513 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 02:50:43,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:43,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316081993] [2022-01-19 02:50:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316081993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:43,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:43,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:43,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943649752] [2022-01-19 02:50:43,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:43,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:43,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:43,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:43,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:43,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 77 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:43,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:43,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:43,670 INFO L129 PetriNetUnfolder]: 24/436 cut-off events. [2022-01-19 02:50:43,670 INFO L130 PetriNetUnfolder]: For 894/900 co-relation queries the response was YES. [2022-01-19 02:50:43,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 436 events. 24/436 cut-off events. For 894/900 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2975 event pairs, 12 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 1083. Up to 76 conditions per place. [2022-01-19 02:50:43,672 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 64 selfloop transitions, 8 changer transitions 9/123 dead transitions. [2022-01-19 02:50:43,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 779 flow [2022-01-19 02:50:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2022-01-19 02:50:43,673 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-01-19 02:50:43,673 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2022-01-19 02:50:43,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2022-01-19 02:50:43,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:43,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2022-01-19 02:50:43,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 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 02:50:43,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:43,675 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:43,675 INFO L186 Difference]: Start difference. First operand has 114 places, 77 transitions, 327 flow. Second operand 10 states and 610 transitions. [2022-01-19 02:50:43,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 779 flow [2022-01-19 02:50:43,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 123 transitions, 723 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-01-19 02:50:43,679 INFO L242 Difference]: Finished difference. Result has 120 places, 81 transitions, 401 flow [2022-01-19 02:50:43,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=401, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2022-01-19 02:50:43,679 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 46 predicate places. [2022-01-19 02:50:43,679 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 401 flow [2022-01-19 02:50:43,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:43,680 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] [2022-01-19 02:50:43,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 02:50:43,680 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:43,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1744902709, now seen corresponding path program 2 times [2022-01-19 02:50:43,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:43,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451134168] [2022-01-19 02:50:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:43,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:43,743 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 02:50:43,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:43,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451134168] [2022-01-19 02:50:43,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451134168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:43,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:43,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:43,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633374243] [2022-01-19 02:50:43,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:43,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:43,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:43,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:43,744 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:43,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 401 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:43,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:43,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:43,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:43,865 INFO L129 PetriNetUnfolder]: 21/419 cut-off events. [2022-01-19 02:50:43,865 INFO L130 PetriNetUnfolder]: For 977/983 co-relation queries the response was YES. [2022-01-19 02:50:43,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 419 events. 21/419 cut-off events. For 977/983 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2780 event pairs, 19 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 1073. Up to 100 conditions per place. [2022-01-19 02:50:43,867 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 49 selfloop transitions, 7 changer transitions 7/109 dead transitions. [2022-01-19 02:50:43,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 109 transitions, 702 flow [2022-01-19 02:50:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 552 transitions. [2022-01-19 02:50:43,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.757201646090535 [2022-01-19 02:50:43,868 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 552 transitions. [2022-01-19 02:50:43,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 552 transitions. [2022-01-19 02:50:43,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:43,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 552 transitions. [2022-01-19 02:50:43,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.333333333333336) internal successors, (552), 9 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 02:50:43,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:43,880 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:43,880 INFO L186 Difference]: Start difference. First operand has 120 places, 81 transitions, 401 flow. Second operand 9 states and 552 transitions. [2022-01-19 02:50:43,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 109 transitions, 702 flow [2022-01-19 02:50:43,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 109 transitions, 658 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:43,884 INFO L242 Difference]: Finished difference. Result has 127 places, 84 transitions, 450 flow [2022-01-19 02:50:43,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2022-01-19 02:50:43,884 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2022-01-19 02:50:43,885 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 450 flow [2022-01-19 02:50:43,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:43,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:43,885 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] [2022-01-19 02:50:43,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 02:50:43,885 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash 307404330, now seen corresponding path program 6 times [2022-01-19 02:50:43,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:43,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123827292] [2022-01-19 02:50:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:43,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:43,969 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 02:50:43,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:43,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123827292] [2022-01-19 02:50:43,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123827292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:43,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:43,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:43,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302035252] [2022-01-19 02:50:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:43,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:43,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:43,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:43,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:43,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:43,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:43,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:44,122 INFO L129 PetriNetUnfolder]: 21/442 cut-off events. [2022-01-19 02:50:44,122 INFO L130 PetriNetUnfolder]: For 1205/1217 co-relation queries the response was YES. [2022-01-19 02:50:44,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 442 events. 21/442 cut-off events. For 1205/1217 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3004 event pairs, 10 based on Foata normal form. 3/437 useless extension candidates. Maximal degree in co-relation 1160. Up to 135 conditions per place. [2022-01-19 02:50:44,124 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 43 selfloop transitions, 16 changer transitions 10/111 dead transitions. [2022-01-19 02:50:44,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 111 transitions, 797 flow [2022-01-19 02:50:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 588 transitions. [2022-01-19 02:50:44,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.725925925925926 [2022-01-19 02:50:44,127 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 588 transitions. [2022-01-19 02:50:44,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 588 transitions. [2022-01-19 02:50:44,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:44,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 588 transitions. [2022-01-19 02:50:44,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.8) internal successors, (588), 10 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 02:50:44,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:44,129 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:44,129 INFO L186 Difference]: Start difference. First operand has 127 places, 84 transitions, 450 flow. Second operand 10 states and 588 transitions. [2022-01-19 02:50:44,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 111 transitions, 797 flow [2022-01-19 02:50:44,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 111 transitions, 761 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-01-19 02:50:44,134 INFO L242 Difference]: Finished difference. Result has 136 places, 87 transitions, 526 flow [2022-01-19 02:50:44,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=136, PETRI_TRANSITIONS=87} [2022-01-19 02:50:44,134 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 62 predicate places. [2022-01-19 02:50:44,134 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 87 transitions, 526 flow [2022-01-19 02:50:44,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:44,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:44,135 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] [2022-01-19 02:50:44,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 02:50:44,135 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash 260750753, now seen corresponding path program 3 times [2022-01-19 02:50:44,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838122034] [2022-01-19 02:50:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:44,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:44,207 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 02:50:44,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:44,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838122034] [2022-01-19 02:50:44,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838122034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:44,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:44,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:44,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828469969] [2022-01-19 02:50:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:44,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:44,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:44,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:44,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 87 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:44,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:44,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:44,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:44,334 INFO L129 PetriNetUnfolder]: 18/451 cut-off events. [2022-01-19 02:50:44,334 INFO L130 PetriNetUnfolder]: For 1490/1504 co-relation queries the response was YES. [2022-01-19 02:50:44,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 451 events. 18/451 cut-off events. For 1490/1504 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3153 event pairs, 4 based on Foata normal form. 5/450 useless extension candidates. Maximal degree in co-relation 1217. Up to 125 conditions per place. [2022-01-19 02:50:44,336 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 47 selfloop transitions, 12 changer transitions 13/118 dead transitions. [2022-01-19 02:50:44,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 118 transitions, 940 flow [2022-01-19 02:50:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-01-19 02:50:44,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-01-19 02:50:44,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-01-19 02:50:44,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-01-19 02:50:44,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:44,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-01-19 02:50:44,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 02:50:44,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:44,339 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:44,339 INFO L186 Difference]: Start difference. First operand has 136 places, 87 transitions, 526 flow. Second operand 9 states and 549 transitions. [2022-01-19 02:50:44,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 118 transitions, 940 flow [2022-01-19 02:50:44,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 118 transitions, 880 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:44,344 INFO L242 Difference]: Finished difference. Result has 142 places, 89 transitions, 574 flow [2022-01-19 02:50:44,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=142, PETRI_TRANSITIONS=89} [2022-01-19 02:50:44,345 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 68 predicate places. [2022-01-19 02:50:44,345 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 89 transitions, 574 flow [2022-01-19 02:50:44,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:44,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:44,345 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] [2022-01-19 02:50:44,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 02:50:44,345 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -658061558, now seen corresponding path program 7 times [2022-01-19 02:50:44,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975097372] [2022-01-19 02:50:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:44,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:44,425 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 02:50:44,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:44,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975097372] [2022-01-19 02:50:44,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975097372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:44,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:44,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:44,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790925745] [2022-01-19 02:50:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:44,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:44,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:44,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:44,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:44,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 89 transitions, 574 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:44,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:44,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:44,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:44,612 INFO L129 PetriNetUnfolder]: 17/418 cut-off events. [2022-01-19 02:50:44,613 INFO L130 PetriNetUnfolder]: For 1553/1567 co-relation queries the response was YES. [2022-01-19 02:50:44,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 418 events. 17/418 cut-off events. For 1553/1567 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2820 event pairs, 11 based on Foata normal form. 5/415 useless extension candidates. Maximal degree in co-relation 1158. Up to 86 conditions per place. [2022-01-19 02:50:44,614 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 59 selfloop transitions, 12 changer transitions 11/124 dead transitions. [2022-01-19 02:50:44,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 124 transitions, 1038 flow [2022-01-19 02:50:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 597 transitions. [2022-01-19 02:50:44,615 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.737037037037037 [2022-01-19 02:50:44,615 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 597 transitions. [2022-01-19 02:50:44,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 597 transitions. [2022-01-19 02:50:44,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:44,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 597 transitions. [2022-01-19 02:50:44,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 02:50:44,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:44,617 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:44,617 INFO L186 Difference]: Start difference. First operand has 142 places, 89 transitions, 574 flow. Second operand 10 states and 597 transitions. [2022-01-19 02:50:44,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 124 transitions, 1038 flow [2022-01-19 02:50:44,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 124 transitions, 981 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:44,623 INFO L242 Difference]: Finished difference. Result has 151 places, 94 transitions, 675 flow [2022-01-19 02:50:44,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=151, PETRI_TRANSITIONS=94} [2022-01-19 02:50:44,623 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 77 predicate places. [2022-01-19 02:50:44,623 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 94 transitions, 675 flow [2022-01-19 02:50:44,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:44,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:44,624 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] [2022-01-19 02:50:44,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 02:50:44,624 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash 432307051, now seen corresponding path program 4 times [2022-01-19 02:50:44,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635077299] [2022-01-19 02:50:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:44,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:44,694 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 02:50:44,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:44,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635077299] [2022-01-19 02:50:44,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635077299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:44,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:44,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:44,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079897313] [2022-01-19 02:50:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:44,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:44,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:44,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:44,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:44,696 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:44,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 94 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:44,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:44,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:44,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:44,832 INFO L129 PetriNetUnfolder]: 17/403 cut-off events. [2022-01-19 02:50:44,832 INFO L130 PetriNetUnfolder]: For 1636/1652 co-relation queries the response was YES. [2022-01-19 02:50:44,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 403 events. 17/403 cut-off events. For 1636/1652 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2658 event pairs, 7 based on Foata normal form. 6/401 useless extension candidates. Maximal degree in co-relation 1162. Up to 124 conditions per place. [2022-01-19 02:50:44,835 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 40 selfloop transitions, 10 changer transitions 19/115 dead transitions. [2022-01-19 02:50:44,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 115 transitions, 1043 flow [2022-01-19 02:50:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2022-01-19 02:50:44,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7448559670781894 [2022-01-19 02:50:44,837 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2022-01-19 02:50:44,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2022-01-19 02:50:44,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:44,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2022-01-19 02:50:44,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.333333333333336) internal successors, (543), 9 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 02:50:44,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:44,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:44,840 INFO L186 Difference]: Start difference. First operand has 151 places, 94 transitions, 675 flow. Second operand 9 states and 543 transitions. [2022-01-19 02:50:44,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 115 transitions, 1043 flow [2022-01-19 02:50:44,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 115 transitions, 1006 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-01-19 02:50:44,846 INFO L242 Difference]: Finished difference. Result has 154 places, 90 transitions, 594 flow [2022-01-19 02:50:44,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=154, PETRI_TRANSITIONS=90} [2022-01-19 02:50:44,847 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 80 predicate places. [2022-01-19 02:50:44,847 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 90 transitions, 594 flow [2022-01-19 02:50:44,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:44,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:44,847 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] [2022-01-19 02:50:44,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 02:50:44,847 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash -881258538, now seen corresponding path program 8 times [2022-01-19 02:50:44,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:44,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931369538] [2022-01-19 02:50:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:44,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:44,924 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 02:50:44,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931369538] [2022-01-19 02:50:44,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931369538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:44,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:44,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:44,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612148337] [2022-01-19 02:50:44,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:44,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:44,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:44,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:44,926 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:44,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 90 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:44,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:44,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:44,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:45,072 INFO L129 PetriNetUnfolder]: 14/364 cut-off events. [2022-01-19 02:50:45,072 INFO L130 PetriNetUnfolder]: For 1374/1391 co-relation queries the response was YES. [2022-01-19 02:50:45,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 364 events. 14/364 cut-off events. For 1374/1391 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2264 event pairs, 4 based on Foata normal form. 5/363 useless extension candidates. Maximal degree in co-relation 1015. Up to 109 conditions per place. [2022-01-19 02:50:45,074 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 48 selfloop transitions, 13 changer transitions 13/116 dead transitions. [2022-01-19 02:50:45,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 116 transitions, 958 flow [2022-01-19 02:50:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-01-19 02:50:45,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-01-19 02:50:45,075 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-01-19 02:50:45,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-01-19 02:50:45,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:45,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-01-19 02:50:45,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 02:50:45,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:45,077 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:45,077 INFO L186 Difference]: Start difference. First operand has 154 places, 90 transitions, 594 flow. Second operand 10 states and 590 transitions. [2022-01-19 02:50:45,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 116 transitions, 958 flow [2022-01-19 02:50:45,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 116 transitions, 908 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-01-19 02:50:45,083 INFO L242 Difference]: Finished difference. Result has 153 places, 91 transitions, 615 flow [2022-01-19 02:50:45,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=615, PETRI_PLACES=153, PETRI_TRANSITIONS=91} [2022-01-19 02:50:45,083 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 79 predicate places. [2022-01-19 02:50:45,083 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 91 transitions, 615 flow [2022-01-19 02:50:45,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:45,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:45,084 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] [2022-01-19 02:50:45,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 02:50:45,084 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2144980316, now seen corresponding path program 9 times [2022-01-19 02:50:45,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:45,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180259070] [2022-01-19 02:50:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:45,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:45,171 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 02:50:45,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:45,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180259070] [2022-01-19 02:50:45,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180259070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:45,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:45,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:45,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176492491] [2022-01-19 02:50:45,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:45,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:45,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:45,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:45,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:45,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 91 transitions, 615 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:45,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:45,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:45,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:45,298 INFO L129 PetriNetUnfolder]: 13/346 cut-off events. [2022-01-19 02:50:45,298 INFO L130 PetriNetUnfolder]: For 1285/1299 co-relation queries the response was YES. [2022-01-19 02:50:45,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 346 events. 13/346 cut-off events. For 1285/1299 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2081 event pairs, 5 based on Foata normal form. 6/346 useless extension candidates. Maximal degree in co-relation 978. Up to 109 conditions per place. [2022-01-19 02:50:45,300 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 40 selfloop transitions, 10 changer transitions 17/109 dead transitions. [2022-01-19 02:50:45,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 109 transitions, 917 flow [2022-01-19 02:50:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 583 transitions. [2022-01-19 02:50:45,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7197530864197531 [2022-01-19 02:50:45,304 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 583 transitions. [2022-01-19 02:50:45,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 583 transitions. [2022-01-19 02:50:45,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:45,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 583 transitions. [2022-01-19 02:50:45,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 02:50:45,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:45,309 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:45,309 INFO L186 Difference]: Start difference. First operand has 153 places, 91 transitions, 615 flow. Second operand 10 states and 583 transitions. [2022-01-19 02:50:45,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 109 transitions, 917 flow [2022-01-19 02:50:45,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 109 transitions, 875 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 02:50:45,315 INFO L242 Difference]: Finished difference. Result has 155 places, 88 transitions, 568 flow [2022-01-19 02:50:45,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=155, PETRI_TRANSITIONS=88} [2022-01-19 02:50:45,315 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 81 predicate places. [2022-01-19 02:50:45,316 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 88 transitions, 568 flow [2022-01-19 02:50:45,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:45,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:45,316 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] [2022-01-19 02:50:45,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 02:50:45,316 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:45,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1232039598, now seen corresponding path program 10 times [2022-01-19 02:50:45,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:45,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396422458] [2022-01-19 02:50:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:45,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:45,396 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 02:50:45,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:45,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396422458] [2022-01-19 02:50:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396422458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:45,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:45,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:45,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911008138] [2022-01-19 02:50:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:45,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:45,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:45,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:45,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 88 transitions, 568 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:45,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:45,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:45,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:45,547 INFO L129 PetriNetUnfolder]: 13/312 cut-off events. [2022-01-19 02:50:45,547 INFO L130 PetriNetUnfolder]: For 1246/1262 co-relation queries the response was YES. [2022-01-19 02:50:45,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 312 events. 13/312 cut-off events. For 1246/1262 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1781 event pairs, 7 based on Foata normal form. 7/314 useless extension candidates. Maximal degree in co-relation 908. Up to 73 conditions per place. [2022-01-19 02:50:45,548 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 46 selfloop transitions, 9 changer transitions 12/109 dead transitions. [2022-01-19 02:50:45,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 109 transitions, 878 flow [2022-01-19 02:50:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-01-19 02:50:45,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-01-19 02:50:45,551 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-01-19 02:50:45,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-01-19 02:50:45,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:45,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-01-19 02:50:45,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 02:50:45,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:45,553 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:45,553 INFO L186 Difference]: Start difference. First operand has 155 places, 88 transitions, 568 flow. Second operand 10 states and 590 transitions. [2022-01-19 02:50:45,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 109 transitions, 878 flow [2022-01-19 02:50:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 109 transitions, 822 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-01-19 02:50:45,560 INFO L242 Difference]: Finished difference. Result has 151 places, 88 transitions, 576 flow [2022-01-19 02:50:45,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=576, PETRI_PLACES=151, PETRI_TRANSITIONS=88} [2022-01-19 02:50:45,560 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 77 predicate places. [2022-01-19 02:50:45,560 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 88 transitions, 576 flow [2022-01-19 02:50:45,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:45,560 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:45,561 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] [2022-01-19 02:50:45,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 02:50:45,561 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:45,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1022226839, now seen corresponding path program 5 times [2022-01-19 02:50:45,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:45,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172468233] [2022-01-19 02:50:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:45,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:45,648 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 02:50:45,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172468233] [2022-01-19 02:50:45,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172468233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:45,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:45,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:50:45,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41781923] [2022-01-19 02:50:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:45,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:50:45,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:50:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:50:45,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-01-19 02:50:45,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 88 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:45,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:45,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-01-19 02:50:45,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:45,756 INFO L129 PetriNetUnfolder]: 11/286 cut-off events. [2022-01-19 02:50:45,756 INFO L130 PetriNetUnfolder]: For 1098/1112 co-relation queries the response was YES. [2022-01-19 02:50:45,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 286 events. 11/286 cut-off events. For 1098/1112 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1555 event pairs, 8 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 844. Up to 86 conditions per place. [2022-01-19 02:50:45,757 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 34 selfloop transitions, 4 changer transitions 20/103 dead transitions. [2022-01-19 02:50:45,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 103 transitions, 832 flow [2022-01-19 02:50:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 02:50:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 02:50:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2022-01-19 02:50:45,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7421124828532236 [2022-01-19 02:50:45,760 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2022-01-19 02:50:45,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2022-01-19 02:50:45,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:45,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2022-01-19 02:50:45,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.111111111111114) internal successors, (541), 9 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 02:50:45,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:45,762 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 02:50:45,762 INFO L186 Difference]: Start difference. First operand has 151 places, 88 transitions, 576 flow. Second operand 9 states and 541 transitions. [2022-01-19 02:50:45,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 103 transitions, 832 flow [2022-01-19 02:50:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 103 transitions, 779 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-01-19 02:50:45,766 INFO L242 Difference]: Finished difference. Result has 149 places, 82 transitions, 452 flow [2022-01-19 02:50:45,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=149, PETRI_TRANSITIONS=82} [2022-01-19 02:50:45,769 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 75 predicate places. [2022-01-19 02:50:45,769 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 82 transitions, 452 flow [2022-01-19 02:50:45,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 02:50:45,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:45,769 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] [2022-01-19 02:50:45,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 02:50:45,770 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2140697048, now seen corresponding path program 11 times [2022-01-19 02:50:45,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:45,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809040447] [2022-01-19 02:50:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:45,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:45,866 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 02:50:45,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:45,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809040447] [2022-01-19 02:50:45,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809040447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:45,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:45,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:45,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112445679] [2022-01-19 02:50:45,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:45,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:45,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:45,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:45,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 82 transitions, 452 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:45,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:45,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:45,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:45,997 INFO L129 PetriNetUnfolder]: 11/229 cut-off events. [2022-01-19 02:50:45,997 INFO L130 PetriNetUnfolder]: For 725/738 co-relation queries the response was YES. [2022-01-19 02:50:45,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 229 events. 11/229 cut-off events. For 725/738 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1031 event pairs, 7 based on Foata normal form. 6/229 useless extension candidates. Maximal degree in co-relation 670. Up to 60 conditions per place. [2022-01-19 02:50:45,998 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 40 selfloop transitions, 6 changer transitions 13/101 dead transitions. [2022-01-19 02:50:45,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 101 transitions, 693 flow [2022-01-19 02:50:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-01-19 02:50:45,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-01-19 02:50:45,999 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-01-19 02:50:45,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-01-19 02:50:46,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:46,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-01-19 02:50:46,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.9) internal successors, (589), 10 states have internal predecessors, (589), 0 states have call successors, (0), 0 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 02:50:46,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,002 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,002 INFO L186 Difference]: Start difference. First operand has 149 places, 82 transitions, 452 flow. Second operand 10 states and 589 transitions. [2022-01-19 02:50:46,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 101 transitions, 693 flow [2022-01-19 02:50:46,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 101 transitions, 648 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-01-19 02:50:46,005 INFO L242 Difference]: Finished difference. Result has 140 places, 79 transitions, 403 flow [2022-01-19 02:50:46,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=403, PETRI_PLACES=140, PETRI_TRANSITIONS=79} [2022-01-19 02:50:46,006 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2022-01-19 02:50:46,006 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 79 transitions, 403 flow [2022-01-19 02:50:46,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:46,006 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] [2022-01-19 02:50:46,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 02:50:46,006 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 112076268, now seen corresponding path program 12 times [2022-01-19 02:50:46,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:46,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132097977] [2022-01-19 02:50:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:46,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:46,100 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 02:50:46,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:46,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132097977] [2022-01-19 02:50:46,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132097977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:46,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:46,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:46,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096150886] [2022-01-19 02:50:46,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:46,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:46,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:46,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:46,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 79 transitions, 403 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:46,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:46,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:46,237 INFO L129 PetriNetUnfolder]: 10/220 cut-off events. [2022-01-19 02:50:46,237 INFO L130 PetriNetUnfolder]: For 534/545 co-relation queries the response was YES. [2022-01-19 02:50:46,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 220 events. 10/220 cut-off events. For 534/545 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 951 event pairs, 7 based on Foata normal form. 5/220 useless extension candidates. Maximal degree in co-relation 617. Up to 60 conditions per place. [2022-01-19 02:50:46,238 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 7 changer transitions 11/98 dead transitions. [2022-01-19 02:50:46,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 98 transitions, 636 flow [2022-01-19 02:50:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2022-01-19 02:50:46,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7246913580246913 [2022-01-19 02:50:46,239 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2022-01-19 02:50:46,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2022-01-19 02:50:46,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:46,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2022-01-19 02:50:46,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 02:50:46,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,240 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,241 INFO L186 Difference]: Start difference. First operand has 140 places, 79 transitions, 403 flow. Second operand 10 states and 587 transitions. [2022-01-19 02:50:46,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 98 transitions, 636 flow [2022-01-19 02:50:46,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 98 transitions, 584 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-01-19 02:50:46,243 INFO L242 Difference]: Finished difference. Result has 137 places, 80 transitions, 415 flow [2022-01-19 02:50:46,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=137, PETRI_TRANSITIONS=80} [2022-01-19 02:50:46,244 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 63 predicate places. [2022-01-19 02:50:46,244 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 80 transitions, 415 flow [2022-01-19 02:50:46,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:46,244 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] [2022-01-19 02:50:46,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 02:50:46,244 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1443359976, now seen corresponding path program 13 times [2022-01-19 02:50:46,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:46,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446800538] [2022-01-19 02:50:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:46,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:46,325 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 02:50:46,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:46,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446800538] [2022-01-19 02:50:46,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446800538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:46,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:46,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:46,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795747044] [2022-01-19 02:50:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:46,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:46,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:46,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:46,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 80 transitions, 415 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:46,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:46,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:46,461 INFO L129 PetriNetUnfolder]: 10/204 cut-off events. [2022-01-19 02:50:46,462 INFO L130 PetriNetUnfolder]: For 458/469 co-relation queries the response was YES. [2022-01-19 02:50:46,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 204 events. 10/204 cut-off events. For 458/469 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 837 event pairs, 7 based on Foata normal form. 5/203 useless extension candidates. Maximal degree in co-relation 571. Up to 60 conditions per place. [2022-01-19 02:50:46,463 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 29 selfloop transitions, 3 changer transitions 17/91 dead transitions. [2022-01-19 02:50:46,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 91 transitions, 588 flow [2022-01-19 02:50:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 580 transitions. [2022-01-19 02:50:46,464 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-01-19 02:50:46,464 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 580 transitions. [2022-01-19 02:50:46,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 580 transitions. [2022-01-19 02:50:46,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:46,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 580 transitions. [2022-01-19 02:50:46,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 02:50:46,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,465 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,465 INFO L186 Difference]: Start difference. First operand has 137 places, 80 transitions, 415 flow. Second operand 10 states and 580 transitions. [2022-01-19 02:50:46,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 91 transitions, 588 flow [2022-01-19 02:50:46,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 91 transitions, 551 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-01-19 02:50:46,468 INFO L242 Difference]: Finished difference. Result has 138 places, 74 transitions, 331 flow [2022-01-19 02:50:46,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=331, PETRI_PLACES=138, PETRI_TRANSITIONS=74} [2022-01-19 02:50:46,468 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 64 predicate places. [2022-01-19 02:50:46,469 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 74 transitions, 331 flow [2022-01-19 02:50:46,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:46,469 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] [2022-01-19 02:50:46,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 02:50:46,469 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2036479358, now seen corresponding path program 14 times [2022-01-19 02:50:46,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:46,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144640328] [2022-01-19 02:50:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:46,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:46,557 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 02:50:46,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:46,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144640328] [2022-01-19 02:50:46,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144640328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:46,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:46,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:46,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168984141] [2022-01-19 02:50:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:46,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:46,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:46,558 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:46,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 74 transitions, 331 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:46,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:46,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:46,691 INFO L129 PetriNetUnfolder]: 7/167 cut-off events. [2022-01-19 02:50:46,691 INFO L130 PetriNetUnfolder]: For 325/334 co-relation queries the response was YES. [2022-01-19 02:50:46,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 167 events. 7/167 cut-off events. For 325/334 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 567 event pairs, 0 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 445. Up to 31 conditions per place. [2022-01-19 02:50:46,692 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 26 selfloop transitions, 10 changer transitions 11/89 dead transitions. [2022-01-19 02:50:46,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 89 transitions, 541 flow [2022-01-19 02:50:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 577 transitions. [2022-01-19 02:50:46,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7123456790123457 [2022-01-19 02:50:46,693 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 577 transitions. [2022-01-19 02:50:46,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 577 transitions. [2022-01-19 02:50:46,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:46,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 577 transitions. [2022-01-19 02:50:46,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.7) internal successors, (577), 10 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 02:50:46,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,694 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,694 INFO L186 Difference]: Start difference. First operand has 138 places, 74 transitions, 331 flow. Second operand 10 states and 577 transitions. [2022-01-19 02:50:46,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 89 transitions, 541 flow [2022-01-19 02:50:46,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 89 transitions, 492 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-01-19 02:50:46,697 INFO L242 Difference]: Finished difference. Result has 123 places, 74 transitions, 327 flow [2022-01-19 02:50:46,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=327, PETRI_PLACES=123, PETRI_TRANSITIONS=74} [2022-01-19 02:50:46,697 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2022-01-19 02:50:46,697 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 74 transitions, 327 flow [2022-01-19 02:50:46,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:46,697 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] [2022-01-19 02:50:46,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 02:50:46,698 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash 635828710, now seen corresponding path program 15 times [2022-01-19 02:50:46,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:46,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652969470] [2022-01-19 02:50:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:46,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:46,785 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 02:50:46,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:46,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652969470] [2022-01-19 02:50:46,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652969470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:46,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:46,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:46,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504078086] [2022-01-19 02:50:46,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:46,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:46,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:46,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:46,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 74 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:46,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:46,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:46,933 INFO L129 PetriNetUnfolder]: 5/192 cut-off events. [2022-01-19 02:50:46,933 INFO L130 PetriNetUnfolder]: For 337/346 co-relation queries the response was YES. [2022-01-19 02:50:46,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 192 events. 5/192 cut-off events. For 337/346 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 773 event pairs, 4 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 488. Up to 32 conditions per place. [2022-01-19 02:50:46,934 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 41 selfloop transitions, 7 changer transitions 9/99 dead transitions. [2022-01-19 02:50:46,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 571 flow [2022-01-19 02:50:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-01-19 02:50:46,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-01-19 02:50:46,935 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-01-19 02:50:46,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-01-19 02:50:46,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:46,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-01-19 02:50:46,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 02:50:46,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,936 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:46,936 INFO L186 Difference]: Start difference. First operand has 123 places, 74 transitions, 327 flow. Second operand 10 states and 590 transitions. [2022-01-19 02:50:46,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 571 flow [2022-01-19 02:50:46,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 99 transitions, 515 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-19 02:50:46,939 INFO L242 Difference]: Finished difference. Result has 125 places, 76 transitions, 347 flow [2022-01-19 02:50:46,939 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=125, PETRI_TRANSITIONS=76} [2022-01-19 02:50:46,939 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2022-01-19 02:50:46,939 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 76 transitions, 347 flow [2022-01-19 02:50:46,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:46,939 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:46,940 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] [2022-01-19 02:50:46,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 02:50:46,940 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash -625509532, now seen corresponding path program 16 times [2022-01-19 02:50:46,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:46,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930098104] [2022-01-19 02:50:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:46,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:47,028 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 02:50:47,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:47,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930098104] [2022-01-19 02:50:47,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930098104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:47,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:47,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:47,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712142642] [2022-01-19 02:50:47,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:47,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:47,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:47,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:47,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 76 transitions, 347 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:47,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:47,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:47,166 INFO L129 PetriNetUnfolder]: 4/187 cut-off events. [2022-01-19 02:50:47,166 INFO L130 PetriNetUnfolder]: For 272/280 co-relation queries the response was YES. [2022-01-19 02:50:47,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 187 events. 4/187 cut-off events. For 272/280 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 730 event pairs, 1 based on Foata normal form. 4/187 useless extension candidates. Maximal degree in co-relation 484. Up to 39 conditions per place. [2022-01-19 02:50:47,167 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 35 selfloop transitions, 10 changer transitions 9/96 dead transitions. [2022-01-19 02:50:47,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 96 transitions, 580 flow [2022-01-19 02:50:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 583 transitions. [2022-01-19 02:50:47,168 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7197530864197531 [2022-01-19 02:50:47,168 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 583 transitions. [2022-01-19 02:50:47,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 583 transitions. [2022-01-19 02:50:47,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:47,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 583 transitions. [2022-01-19 02:50:47,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.3) internal successors, (583), 10 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 02:50:47,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,170 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,170 INFO L186 Difference]: Start difference. First operand has 125 places, 76 transitions, 347 flow. Second operand 10 states and 583 transitions. [2022-01-19 02:50:47,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 96 transitions, 580 flow [2022-01-19 02:50:47,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 96 transitions, 552 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-01-19 02:50:47,172 INFO L242 Difference]: Finished difference. Result has 130 places, 77 transitions, 380 flow [2022-01-19 02:50:47,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=130, PETRI_TRANSITIONS=77} [2022-01-19 02:50:47,172 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2022-01-19 02:50:47,173 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 77 transitions, 380 flow [2022-01-19 02:50:47,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:47,173 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] [2022-01-19 02:50:47,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 02:50:47,173 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash 383792464, now seen corresponding path program 17 times [2022-01-19 02:50:47,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:47,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152139057] [2022-01-19 02:50:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:47,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:47,243 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 02:50:47,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:47,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152139057] [2022-01-19 02:50:47,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152139057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:47,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:47,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:47,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295152889] [2022-01-19 02:50:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:47,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:47,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:47,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:47,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:47,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 77 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:47,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:47,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:47,363 INFO L129 PetriNetUnfolder]: 4/173 cut-off events. [2022-01-19 02:50:47,363 INFO L130 PetriNetUnfolder]: For 342/350 co-relation queries the response was YES. [2022-01-19 02:50:47,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 173 events. 4/173 cut-off events. For 342/350 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 629 event pairs, 3 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2022-01-19 02:50:47,364 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 33 selfloop transitions, 5 changer transitions 14/94 dead transitions. [2022-01-19 02:50:47,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 94 transitions, 579 flow [2022-01-19 02:50:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-01-19 02:50:47,365 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-01-19 02:50:47,365 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-01-19 02:50:47,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-01-19 02:50:47,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:47,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-01-19 02:50:47,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 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 02:50:47,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,367 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,367 INFO L186 Difference]: Start difference. First operand has 130 places, 77 transitions, 380 flow. Second operand 10 states and 584 transitions. [2022-01-19 02:50:47,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 94 transitions, 579 flow [2022-01-19 02:50:47,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 94 transitions, 534 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-01-19 02:50:47,370 INFO L242 Difference]: Finished difference. Result has 131 places, 74 transitions, 330 flow [2022-01-19 02:50:47,370 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=131, PETRI_TRANSITIONS=74} [2022-01-19 02:50:47,370 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 57 predicate places. [2022-01-19 02:50:47,370 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 74 transitions, 330 flow [2022-01-19 02:50:47,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:47,370 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] [2022-01-19 02:50:47,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 02:50:47,371 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1668405252, now seen corresponding path program 18 times [2022-01-19 02:50:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:47,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481748260] [2022-01-19 02:50:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:47,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:47,447 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 02:50:47,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:47,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481748260] [2022-01-19 02:50:47,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481748260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:47,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:47,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:47,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345099679] [2022-01-19 02:50:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:47,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:47,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:47,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:47,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 74 transitions, 330 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:47,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:47,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:47,564 INFO L129 PetriNetUnfolder]: 3/142 cut-off events. [2022-01-19 02:50:47,565 INFO L130 PetriNetUnfolder]: For 214/220 co-relation queries the response was YES. [2022-01-19 02:50:47,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 142 events. 3/142 cut-off events. For 214/220 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 399 event pairs, 0 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 376. Up to 27 conditions per place. [2022-01-19 02:50:47,565 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 24 selfloop transitions, 5 changer transitions 15/86 dead transitions. [2022-01-19 02:50:47,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 86 transitions, 502 flow [2022-01-19 02:50:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 576 transitions. [2022-01-19 02:50:47,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2022-01-19 02:50:47,566 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 576 transitions. [2022-01-19 02:50:47,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 576 transitions. [2022-01-19 02:50:47,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:47,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 576 transitions. [2022-01-19 02:50:47,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 02:50:47,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,568 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,568 INFO L186 Difference]: Start difference. First operand has 131 places, 74 transitions, 330 flow. Second operand 10 states and 576 transitions. [2022-01-19 02:50:47,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 86 transitions, 502 flow [2022-01-19 02:50:47,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 86 transitions, 464 flow, removed 10 selfloop flow, removed 11 redundant places. [2022-01-19 02:50:47,570 INFO L242 Difference]: Finished difference. Result has 125 places, 69 transitions, 263 flow [2022-01-19 02:50:47,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=125, PETRI_TRANSITIONS=69} [2022-01-19 02:50:47,571 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2022-01-19 02:50:47,572 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 69 transitions, 263 flow [2022-01-19 02:50:47,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:47,572 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] [2022-01-19 02:50:47,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 02:50:47,572 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:47,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1607529690, now seen corresponding path program 19 times [2022-01-19 02:50:47,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:47,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499817316] [2022-01-19 02:50:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:47,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:47,663 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 02:50:47,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499817316] [2022-01-19 02:50:47,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499817316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:47,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:47,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:47,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231747002] [2022-01-19 02:50:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:47,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:47,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:47,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:47,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 69 transitions, 263 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:47,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:47,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:47,804 INFO L129 PetriNetUnfolder]: 0/137 cut-off events. [2022-01-19 02:50:47,805 INFO L130 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-01-19 02:50:47,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 137 events. 0/137 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 362 event pairs, 0 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2022-01-19 02:50:47,805 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 20 selfloop transitions, 7 changer transitions 14/83 dead transitions. [2022-01-19 02:50:47,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 83 transitions, 465 flow [2022-01-19 02:50:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 574 transitions. [2022-01-19 02:50:47,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7086419753086419 [2022-01-19 02:50:47,807 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 574 transitions. [2022-01-19 02:50:47,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 574 transitions. [2022-01-19 02:50:47,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:47,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 574 transitions. [2022-01-19 02:50:47,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 02:50:47,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,809 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:47,809 INFO L186 Difference]: Start difference. First operand has 125 places, 69 transitions, 263 flow. Second operand 10 states and 574 transitions. [2022-01-19 02:50:47,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 83 transitions, 465 flow [2022-01-19 02:50:47,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 83 transitions, 388 flow, removed 9 selfloop flow, removed 16 redundant places. [2022-01-19 02:50:47,811 INFO L242 Difference]: Finished difference. Result has 113 places, 69 transitions, 244 flow [2022-01-19 02:50:47,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=113, PETRI_TRANSITIONS=69} [2022-01-19 02:50:47,812 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2022-01-19 02:50:47,812 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 69 transitions, 244 flow [2022-01-19 02:50:47,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:50:47,812 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] [2022-01-19 02:50:47,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 02:50:47,813 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 02:50:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:50:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1409584476, now seen corresponding path program 20 times [2022-01-19 02:50:47,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:50:47,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185347803] [2022-01-19 02:50:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:50:47,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:50:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:50:47,930 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 02:50:47,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:50:47,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185347803] [2022-01-19 02:50:47,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185347803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:50:47,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:50:47,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 02:50:47,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702955108] [2022-01-19 02:50:47,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:50:47,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:50:47,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:50:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:50:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 02:50:47,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-01-19 02:50:47,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 69 transitions, 244 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:47,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:50:47,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-01-19 02:50:47,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:50:48,033 INFO L129 PetriNetUnfolder]: 0/99 cut-off events. [2022-01-19 02:50:48,034 INFO L130 PetriNetUnfolder]: For 73/75 co-relation queries the response was YES. [2022-01-19 02:50:48,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 99 events. 0/99 cut-off events. For 73/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2022-01-19 02:50:48,034 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-01-19 02:50:48,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 71 transitions, 348 flow [2022-01-19 02:50:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:50:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:50:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 566 transitions. [2022-01-19 02:50:48,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6987654320987654 [2022-01-19 02:50:48,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 566 transitions. [2022-01-19 02:50:48,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 566 transitions. [2022-01-19 02:50:48,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:50:48,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 566 transitions. [2022-01-19 02:50:48,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 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 02:50:48,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:48,037 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 02:50:48,037 INFO L186 Difference]: Start difference. First operand has 113 places, 69 transitions, 244 flow. Second operand 10 states and 566 transitions. [2022-01-19 02:50:48,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 71 transitions, 348 flow [2022-01-19 02:50:48,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 71 transitions, 314 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 02:50:48,038 INFO L242 Difference]: Finished difference. Result has 107 places, 0 transitions, 0 flow [2022-01-19 02:50:48,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=107, PETRI_TRANSITIONS=0} [2022-01-19 02:50:48,038 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2022-01-19 02:50:48,039 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 0 transitions, 0 flow [2022-01-19 02:50:48,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 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 02:50:48,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 02:50:48,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 02:50:48,041 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 02:50:48,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 02:50:48,043 INFO L732 BasicCegarLoop]: Path program histogram: [20, 10, 5, 3] [2022-01-19 02:50:48,045 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:50:48,045 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:50:48,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:50:48 BasicIcfg [2022-01-19 02:50:48,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:50:48,048 INFO L158 Benchmark]: Toolchain (without parser) took 10970.36ms. Allocated memory was 367.0MB in the beginning and 578.8MB in the end (delta: 211.8MB). Free memory was 313.7MB in the beginning and 504.7MB in the end (delta: -191.0MB). Peak memory consumption was 23.3MB. Max. memory is 16.0GB. [2022-01-19 02:50:48,050 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 330.0MB in the end (delta: 73.2kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:50:48,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.27ms. Allocated memory was 367.0MB in the beginning and 482.3MB in the end (delta: 115.3MB). Free memory was 313.5MB in the beginning and 456.3MB in the end (delta: -142.8MB). Peak memory consumption was 13.0MB. Max. memory is 16.0GB. [2022-01-19 02:50:48,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.01ms. Allocated memory is still 482.3MB. Free memory was 456.3MB in the beginning and 454.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:50:48,051 INFO L158 Benchmark]: Boogie Preprocessor took 23.13ms. Allocated memory is still 482.3MB. Free memory was 454.2MB in the beginning and 453.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:50:48,051 INFO L158 Benchmark]: RCFGBuilder took 253.69ms. Allocated memory is still 482.3MB. Free memory was 453.1MB in the beginning and 439.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 02:50:48,051 INFO L158 Benchmark]: TraceAbstraction took 10490.43ms. Allocated memory was 482.3MB in the beginning and 578.8MB in the end (delta: 96.5MB). Free memory was 439.5MB in the beginning and 504.7MB in the end (delta: -65.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.0GB. [2022-01-19 02:50:48,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 330.0MB in the end (delta: 73.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 166.27ms. Allocated memory was 367.0MB in the beginning and 482.3MB in the end (delta: 115.3MB). Free memory was 313.5MB in the beginning and 456.3MB in the end (delta: -142.8MB). Peak memory consumption was 13.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.01ms. Allocated memory is still 482.3MB. Free memory was 456.3MB in the beginning and 454.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.13ms. Allocated memory is still 482.3MB. Free memory was 454.2MB in the beginning and 453.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 253.69ms. Allocated memory is still 482.3MB. Free memory was 453.1MB in the beginning and 439.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 10490.43ms. Allocated memory was 482.3MB in the beginning and 578.8MB in the end (delta: 96.5MB). Free memory was 439.5MB in the beginning and 504.7MB in the end (delta: -65.2MB). Peak memory consumption was 34.4MB. 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 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 3 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: 10.4s, OverallIterations: 38, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1856 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1856 mSDsluCounter, 4618 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5342 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4719 IncrementalHoareTripleChecker+Invalid, 4734 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 852 mSDtfsCounter, 4719 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=675occurred in iteration=23, InterpolantAutomatonStates: 375, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2356 NumberOfCodeBlocks, 2356 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2318 ConstructedInterpolants, 0 QuantifiedInterpolants, 15060 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 02:50:48,096 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...