/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 12:38:23,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 12:38:23,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 12:38:23,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 12:38:23,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 12:38:23,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 12:38:23,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 12:38:23,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 12:38:23,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 12:38:23,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 12:38:23,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 12:38:23,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 12:38:23,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 12:38:23,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 12:38:23,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 12:38:23,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 12:38:23,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 12:38:23,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 12:38:23,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 12:38:23,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 12:38:23,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 12:38:23,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 12:38:23,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 12:38:23,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 12:38:23,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 12:38:23,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 12:38:23,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 12:38:23,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 12:38:23,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 12:38:23,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 12:38:23,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 12:38:23,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 12:38:23,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 12:38:23,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 12:38:23,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 12:38:23,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 12:38:23,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 12:38:23,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 12:38:23,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 12:38:23,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 12:38:23,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 12:38:23,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf [2022-01-19 12:38:23,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 12:38:23,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 12:38:23,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 12:38:23,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 12:38:23,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 12:38:23,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 12:38:23,485 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 12:38:23,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 12:38:23,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 12:38:23,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 12:38:23,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 12:38:23,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 12:38:23,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 12:38:23,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 12:38:23,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 12:38:23,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 12:38:23,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:38:23,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 12:38:23,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 12:38:23,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 12:38:23,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 12:38:23,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 12:38:23,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 12:38:23,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 12:38:23,490 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 12:38:23,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 12:38:23,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 12:38:23,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 12:38:23,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 12:38:23,759 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 12:38:23,759 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 12:38:23,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2022-01-19 12:38:23,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfaea3b08/d98b179828e8403ab3779a46a9d18285/FLAG6824c0a85 [2022-01-19 12:38:24,266 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 12:38:24,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2022-01-19 12:38:24,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfaea3b08/d98b179828e8403ab3779a46a9d18285/FLAG6824c0a85 [2022-01-19 12:38:24,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfaea3b08/d98b179828e8403ab3779a46a9d18285 [2022-01-19 12:38:24,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 12:38:24,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 12:38:24,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 12:38:24,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 12:38:24,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 12:38:24,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a028c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24, skipping insertion in model container [2022-01-19 12:38:24,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 12:38:24,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 12:38:24,516 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/array-eq-trans.wvr.c[2737,2750] [2022-01-19 12:38:24,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:38:24,529 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 12:38:24,574 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/array-eq-trans.wvr.c[2737,2750] [2022-01-19 12:38:24,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:38:24,589 INFO L208 MainTranslator]: Completed translation [2022-01-19 12:38:24,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24 WrapperNode [2022-01-19 12:38:24,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 12:38:24,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 12:38:24,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 12:38:24,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 12:38:24,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,625 INFO L137 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 204 [2022-01-19 12:38:24,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 12:38:24,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 12:38:24,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 12:38:24,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 12:38:24,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 12:38:24,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 12:38:24,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 12:38:24,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 12:38:24,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (1/1) ... [2022-01-19 12:38:24,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:38:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:24,725 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 12:38:24,732 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 12:38:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 12:38:24,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 12:38:24,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 12:38:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 12:38:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 12:38:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 12:38:24,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 12:38:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 12:38:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 12:38:24,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 12:38:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 12:38:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 12:38:24,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 12:38:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 12:38:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 12:38:24,765 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 12:38:24,894 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 12:38:24,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 12:38:25,175 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 12:38:25,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 12:38:25,186 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 12:38:25,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:38:25 BoogieIcfgContainer [2022-01-19 12:38:25,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 12:38:25,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 12:38:25,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 12:38:25,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 12:38:25,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:38:24" (1/3) ... [2022-01-19 12:38:25,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1f49c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:38:25, skipping insertion in model container [2022-01-19 12:38:25,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:38:24" (2/3) ... [2022-01-19 12:38:25,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1f49c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:38:25, skipping insertion in model container [2022-01-19 12:38:25,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:38:25" (3/3) ... [2022-01-19 12:38:25,195 INFO L111 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-01-19 12:38:25,199 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 12:38:25,200 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 12:38:25,200 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 12:38:25,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,317 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,325 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,325 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,325 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,325 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,325 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,326 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,326 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,326 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,326 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,327 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,328 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,329 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,329 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,329 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,329 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,329 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,342 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,344 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,345 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,345 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,346 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,348 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:38:25,352 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 12:38:25,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 12:38:25,403 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 12:38:25,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 12:38:25,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 286 places, 306 transitions, 636 flow [2022-01-19 12:38:25,515 INFO L129 PetriNetUnfolder]: 30/303 cut-off events. [2022-01-19 12:38:25,515 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 12:38:25,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 30/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 239 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-01-19 12:38:25,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 306 transitions, 636 flow [2022-01-19 12:38:25,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 292 transitions, 602 flow [2022-01-19 12:38:25,589 INFO L129 PetriNetUnfolder]: 30/291 cut-off events. [2022-01-19 12:38:25,589 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 12:38:25,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:25,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:25,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1864233973, now seen corresponding path program 1 times [2022-01-19 12:38:25,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181338755] [2022-01-19 12:38:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:25,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:25,896 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 12:38:25,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181338755] [2022-01-19 12:38:25,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181338755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:25,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:25,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 12:38:25,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831672177] [2022-01-19 12:38:25,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:25,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 12:38:25,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 12:38:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 12:38:25,947 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 306 [2022-01-19 12:38:25,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 292 transitions, 602 flow. Second operand has 2 states, 2 states have (on average 288.5) internal successors, (577), 2 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 12:38:25,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:25,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 306 [2022-01-19 12:38:25,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:26,039 INFO L129 PetriNetUnfolder]: 15/277 cut-off events. [2022-01-19 12:38:26,039 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 12:38:26,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 277 events. 15/277 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 218 event pairs, 0 based on Foata normal form. 21/274 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2022-01-19 12:38:26,043 INFO L132 encePairwiseOnDemand]: 291/306 looper letters, 6 selfloop transitions, 0 changer transitions 9/277 dead transitions. [2022-01-19 12:38:26,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 277 transitions, 584 flow [2022-01-19 12:38:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 12:38:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 12:38:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 589 transitions. [2022-01-19 12:38:26,060 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9624183006535948 [2022-01-19 12:38:26,061 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 589 transitions. [2022-01-19 12:38:26,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 589 transitions. [2022-01-19 12:38:26,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:26,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 589 transitions. [2022-01-19 12:38:26,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 294.5) internal successors, (589), 2 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 12:38:26,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,080 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,081 INFO L186 Difference]: Start difference. First operand has 272 places, 292 transitions, 602 flow. Second operand 2 states and 589 transitions. [2022-01-19 12:38:26,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 277 transitions, 584 flow [2022-01-19 12:38:26,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 277 transitions, 572 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 12:38:26,096 INFO L242 Difference]: Finished difference. Result has 267 places, 268 transitions, 542 flow [2022-01-19 12:38:26,098 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=267, PETRI_TRANSITIONS=268} [2022-01-19 12:38:26,103 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, -5 predicate places. [2022-01-19 12:38:26,103 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 268 transitions, 542 flow [2022-01-19 12:38:26,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 288.5) internal successors, (577), 2 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 12:38:26,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:26,105 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 12:38:26,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 9750274, now seen corresponding path program 1 times [2022-01-19 12:38:26,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:26,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588661672] [2022-01-19 12:38:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:26,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:26,341 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 12:38:26,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:26,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588661672] [2022-01-19 12:38:26,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588661672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:26,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:26,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 12:38:26,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705389929] [2022-01-19 12:38:26,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:26,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 12:38:26,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:26,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 12:38:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 12:38:26,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 306 [2022-01-19 12:38:26,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 268 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:26,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 306 [2022-01-19 12:38:26,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:26,499 INFO L129 PetriNetUnfolder]: 14/272 cut-off events. [2022-01-19 12:38:26,499 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 12:38:26,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 272 events. 14/272 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 215 event pairs, 0 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 326. Up to 48 conditions per place. [2022-01-19 12:38:26,501 INFO L132 encePairwiseOnDemand]: 302/306 looper letters, 47 selfloop transitions, 0 changer transitions 4/271 dead transitions. [2022-01-19 12:38:26,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 650 flow [2022-01-19 12:38:26,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 12:38:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 12:38:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1217 transitions. [2022-01-19 12:38:26,506 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7954248366013071 [2022-01-19 12:38:26,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1217 transitions. [2022-01-19 12:38:26,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1217 transitions. [2022-01-19 12:38:26,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:26,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1217 transitions. [2022-01-19 12:38:26,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,516 INFO L186 Difference]: Start difference. First operand has 267 places, 268 transitions, 542 flow. Second operand 5 states and 1217 transitions. [2022-01-19 12:38:26,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 650 flow [2022-01-19 12:38:26,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 271 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 12:38:26,525 INFO L242 Difference]: Finished difference. Result has 265 places, 267 transitions, 546 flow [2022-01-19 12:38:26,526 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=265, PETRI_TRANSITIONS=267} [2022-01-19 12:38:26,527 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, -7 predicate places. [2022-01-19 12:38:26,528 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 267 transitions, 546 flow [2022-01-19 12:38:26,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:26,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:26,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 12:38:26,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1489232946, now seen corresponding path program 1 times [2022-01-19 12:38:26,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819449748] [2022-01-19 12:38:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:26,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:26,933 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 12:38:26,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:26,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819449748] [2022-01-19 12:38:26,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819449748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:26,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:26,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 12:38:26,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442634846] [2022-01-19 12:38:26,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:26,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:38:26,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:38:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-19 12:38:26,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 306 [2022-01-19 12:38:26,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 267 transitions, 546 flow. Second operand has 11 states, 11 states have (on average 217.27272727272728) internal successors, (2390), 11 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:26,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:26,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 306 [2022-01-19 12:38:26,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:27,673 INFO L129 PetriNetUnfolder]: 253/1391 cut-off events. [2022-01-19 12:38:27,674 INFO L130 PetriNetUnfolder]: For 56/72 co-relation queries the response was YES. [2022-01-19 12:38:27,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 1391 events. 253/1391 cut-off events. For 56/72 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7339 event pairs, 62 based on Foata normal form. 2/1246 useless extension candidates. Maximal degree in co-relation 1998. Up to 157 conditions per place. [2022-01-19 12:38:27,685 INFO L132 encePairwiseOnDemand]: 280/306 looper letters, 200 selfloop transitions, 30 changer transitions 9/430 dead transitions. [2022-01-19 12:38:27,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 430 transitions, 1378 flow [2022-01-19 12:38:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 12:38:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 12:38:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4292 transitions. [2022-01-19 12:38:27,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.738218094255246 [2022-01-19 12:38:27,694 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4292 transitions. [2022-01-19 12:38:27,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4292 transitions. [2022-01-19 12:38:27,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:27,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4292 transitions. [2022-01-19 12:38:27,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 225.89473684210526) internal successors, (4292), 19 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:27,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:27,720 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:27,720 INFO L186 Difference]: Start difference. First operand has 265 places, 267 transitions, 546 flow. Second operand 19 states and 4292 transitions. [2022-01-19 12:38:27,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 430 transitions, 1378 flow [2022-01-19 12:38:27,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 430 transitions, 1364 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-01-19 12:38:27,729 INFO L242 Difference]: Finished difference. Result has 291 places, 289 transitions, 746 flow [2022-01-19 12:38:27,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=746, PETRI_PLACES=291, PETRI_TRANSITIONS=289} [2022-01-19 12:38:27,731 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 19 predicate places. [2022-01-19 12:38:27,731 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 289 transitions, 746 flow [2022-01-19 12:38:27,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.27272727272728) internal successors, (2390), 11 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:27,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:27,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:27,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 12:38:27,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 663602744, now seen corresponding path program 1 times [2022-01-19 12:38:27,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:27,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978343588] [2022-01-19 12:38:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:27,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:27,835 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 12:38:27,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978343588] [2022-01-19 12:38:27,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978343588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:27,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:27,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:38:27,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610939957] [2022-01-19 12:38:27,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:27,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:38:27,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:38:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:38:27,839 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 306 [2022-01-19 12:38:27,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 289 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:27,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:27,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 306 [2022-01-19 12:38:27,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:28,009 INFO L129 PetriNetUnfolder]: 46/843 cut-off events. [2022-01-19 12:38:28,009 INFO L130 PetriNetUnfolder]: For 89/99 co-relation queries the response was YES. [2022-01-19 12:38:28,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 843 events. 46/843 cut-off events. For 89/99 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3239 event pairs, 3 based on Foata normal form. 5/803 useless extension candidates. Maximal degree in co-relation 1191. Up to 154 conditions per place. [2022-01-19 12:38:28,015 INFO L132 encePairwiseOnDemand]: 300/306 looper letters, 54 selfloop transitions, 8 changer transitions 9/297 dead transitions. [2022-01-19 12:38:28,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 297 transitions, 922 flow [2022-01-19 12:38:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:38:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:38:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-01-19 12:38:28,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7766884531590414 [2022-01-19 12:38:28,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-01-19 12:38:28,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-01-19 12:38:28,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:28,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-01-19 12:38:28,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,026 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,027 INFO L186 Difference]: Start difference. First operand has 291 places, 289 transitions, 746 flow. Second operand 6 states and 1426 transitions. [2022-01-19 12:38:28,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 297 transitions, 922 flow [2022-01-19 12:38:28,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 297 transitions, 908 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-01-19 12:38:28,040 INFO L242 Difference]: Finished difference. Result has 290 places, 288 transitions, 752 flow [2022-01-19 12:38:28,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=290, PETRI_TRANSITIONS=288} [2022-01-19 12:38:28,041 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 18 predicate places. [2022-01-19 12:38:28,042 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 288 transitions, 752 flow [2022-01-19 12:38:28,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:28,043 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:28,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 12:38:28,043 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1642231692, now seen corresponding path program 1 times [2022-01-19 12:38:28,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:28,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75584647] [2022-01-19 12:38:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:28,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:28,273 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 12:38:28,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75584647] [2022-01-19 12:38:28,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75584647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:28,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:28,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 12:38:28,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161365291] [2022-01-19 12:38:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:28,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 12:38:28,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 12:38:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-19 12:38:28,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-01-19 12:38:28,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 288 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:28,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-01-19 12:38:28,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:28,744 INFO L129 PetriNetUnfolder]: 293/1921 cut-off events. [2022-01-19 12:38:28,744 INFO L130 PetriNetUnfolder]: For 263/314 co-relation queries the response was YES. [2022-01-19 12:38:28,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1921 events. 293/1921 cut-off events. For 263/314 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12174 event pairs, 113 based on Foata normal form. 13/1728 useless extension candidates. Maximal degree in co-relation 2799. Up to 242 conditions per place. [2022-01-19 12:38:28,759 INFO L132 encePairwiseOnDemand]: 292/306 looper letters, 112 selfloop transitions, 17 changer transitions 7/342 dead transitions. [2022-01-19 12:38:28,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 342 transitions, 1177 flow [2022-01-19 12:38:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 12:38:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 12:38:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2603 transitions. [2022-01-19 12:38:28,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.773321449792038 [2022-01-19 12:38:28,765 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2603 transitions. [2022-01-19 12:38:28,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2603 transitions. [2022-01-19 12:38:28,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:28,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2603 transitions. [2022-01-19 12:38:28,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 236.63636363636363) internal successors, (2603), 11 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,778 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,778 INFO L186 Difference]: Start difference. First operand has 290 places, 288 transitions, 752 flow. Second operand 11 states and 2603 transitions. [2022-01-19 12:38:28,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 342 transitions, 1177 flow [2022-01-19 12:38:28,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 342 transitions, 1155 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-01-19 12:38:28,791 INFO L242 Difference]: Finished difference. Result has 295 places, 291 transitions, 788 flow [2022-01-19 12:38:28,792 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=788, PETRI_PLACES=295, PETRI_TRANSITIONS=291} [2022-01-19 12:38:28,794 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 23 predicate places. [2022-01-19 12:38:28,794 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 291 transitions, 788 flow [2022-01-19 12:38:28,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:28,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:28,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:28,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 12:38:28,797 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:28,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1706943313, now seen corresponding path program 1 times [2022-01-19 12:38:28,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:28,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602862512] [2022-01-19 12:38:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:28,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:38:28,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602862512] [2022-01-19 12:38:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602862512] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458653693] [2022-01-19 12:38:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:28,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:28,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:28,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 12:38:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:29,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:38:29,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:38:29,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:38:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:38:30,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458653693] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:30,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 12:38:30,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-01-19 12:38:30,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322487688] [2022-01-19 12:38:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:30,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 12:38:30,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 12:38:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-19 12:38:30,287 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-01-19 12:38:30,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 291 transitions, 788 flow. Second operand has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:30,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:30,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-01-19 12:38:30,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:31,049 INFO L129 PetriNetUnfolder]: 595/3548 cut-off events. [2022-01-19 12:38:31,049 INFO L130 PetriNetUnfolder]: For 975/1075 co-relation queries the response was YES. [2022-01-19 12:38:31,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5525 conditions, 3548 events. 595/3548 cut-off events. For 975/1075 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 28921 event pairs, 173 based on Foata normal form. 0/3215 useless extension candidates. Maximal degree in co-relation 5507. Up to 436 conditions per place. [2022-01-19 12:38:31,086 INFO L132 encePairwiseOnDemand]: 290/306 looper letters, 115 selfloop transitions, 26 changer transitions 0/356 dead transitions. [2022-01-19 12:38:31,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 356 transitions, 1234 flow [2022-01-19 12:38:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 12:38:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 12:38:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3524 transitions. [2022-01-19 12:38:31,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7677559912854031 [2022-01-19 12:38:31,095 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3524 transitions. [2022-01-19 12:38:31,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3524 transitions. [2022-01-19 12:38:31,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:31,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3524 transitions. [2022-01-19 12:38:31,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.93333333333334) internal successors, (3524), 15 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:31,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:31,125 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:31,125 INFO L186 Difference]: Start difference. First operand has 295 places, 291 transitions, 788 flow. Second operand 15 states and 3524 transitions. [2022-01-19 12:38:31,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 356 transitions, 1234 flow [2022-01-19 12:38:31,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 356 transitions, 1221 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 12:38:31,138 INFO L242 Difference]: Finished difference. Result has 312 places, 303 transitions, 905 flow [2022-01-19 12:38:31,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=905, PETRI_PLACES=312, PETRI_TRANSITIONS=303} [2022-01-19 12:38:31,141 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 40 predicate places. [2022-01-19 12:38:31,141 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 303 transitions, 905 flow [2022-01-19 12:38:31,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:31,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:31,142 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:31,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 12:38:31,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 12:38:31,356 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash -502410927, now seen corresponding path program 1 times [2022-01-19 12:38:31,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:31,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614825913] [2022-01-19 12:38:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:31,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 12:38:31,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:31,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614825913] [2022-01-19 12:38:31,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614825913] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:31,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420075413] [2022-01-19 12:38:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:31,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:31,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:31,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:31,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 12:38:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:31,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:38:31,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 12:38:32,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:38:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 12:38:32,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420075413] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:32,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 12:38:32,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-01-19 12:38:32,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779719200] [2022-01-19 12:38:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:32,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 12:38:32,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 12:38:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-19 12:38:32,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-01-19 12:38:32,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 303 transitions, 905 flow. Second operand has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:32,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:32,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-01-19 12:38:32,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:33,375 INFO L129 PetriNetUnfolder]: 247/2532 cut-off events. [2022-01-19 12:38:33,375 INFO L130 PetriNetUnfolder]: For 709/796 co-relation queries the response was YES. [2022-01-19 12:38:33,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 2532 events. 247/2532 cut-off events. For 709/796 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18239 event pairs, 86 based on Foata normal form. 12/2389 useless extension candidates. Maximal degree in co-relation 3787. Up to 261 conditions per place. [2022-01-19 12:38:33,393 INFO L132 encePairwiseOnDemand]: 290/306 looper letters, 132 selfloop transitions, 25 changer transitions 7/374 dead transitions. [2022-01-19 12:38:33,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 374 transitions, 1446 flow [2022-01-19 12:38:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 12:38:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 12:38:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3311 transitions. [2022-01-19 12:38:33,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7728758169934641 [2022-01-19 12:38:33,401 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3311 transitions. [2022-01-19 12:38:33,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3311 transitions. [2022-01-19 12:38:33,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:33,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3311 transitions. [2022-01-19 12:38:33,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 236.5) internal successors, (3311), 14 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:33,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:33,416 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 306.0) internal successors, (4590), 15 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:33,416 INFO L186 Difference]: Start difference. First operand has 312 places, 303 transitions, 905 flow. Second operand 14 states and 3311 transitions. [2022-01-19 12:38:33,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 374 transitions, 1446 flow [2022-01-19 12:38:33,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 374 transitions, 1423 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-01-19 12:38:33,426 INFO L242 Difference]: Finished difference. Result has 326 places, 305 transitions, 990 flow [2022-01-19 12:38:33,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=990, PETRI_PLACES=326, PETRI_TRANSITIONS=305} [2022-01-19 12:38:33,428 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 54 predicate places. [2022-01-19 12:38:33,428 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 305 transitions, 990 flow [2022-01-19 12:38:33,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:33,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:33,429 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:33,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 12:38:33,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 12:38:33,647 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1221508563, now seen corresponding path program 1 times [2022-01-19 12:38:33,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:33,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428159331] [2022-01-19 12:38:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:33,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 12:38:33,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:33,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428159331] [2022-01-19 12:38:33,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428159331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:33,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:33,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 12:38:33,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301113195] [2022-01-19 12:38:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:33,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 12:38:33,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 12:38:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-19 12:38:33,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-01-19 12:38:33,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 305 transitions, 990 flow. Second operand has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:33,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:33,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-01-19 12:38:33,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:35,088 INFO L129 PetriNetUnfolder]: 961/4472 cut-off events. [2022-01-19 12:38:35,089 INFO L130 PetriNetUnfolder]: For 2514/2561 co-relation queries the response was YES. [2022-01-19 12:38:35,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 4472 events. 961/4472 cut-off events. For 2514/2561 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 38789 event pairs, 408 based on Foata normal form. 59/4217 useless extension candidates. Maximal degree in co-relation 7818. Up to 715 conditions per place. [2022-01-19 12:38:35,133 INFO L132 encePairwiseOnDemand]: 282/306 looper letters, 122 selfloop transitions, 21 changer transitions 28/355 dead transitions. [2022-01-19 12:38:35,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 355 transitions, 1477 flow [2022-01-19 12:38:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 12:38:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 12:38:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3579 transitions. [2022-01-19 12:38:35,141 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6497821350762527 [2022-01-19 12:38:35,141 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3579 transitions. [2022-01-19 12:38:35,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3579 transitions. [2022-01-19 12:38:35,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:35,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3579 transitions. [2022-01-19 12:38:35,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 198.83333333333334) internal successors, (3579), 18 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,159 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,160 INFO L186 Difference]: Start difference. First operand has 326 places, 305 transitions, 990 flow. Second operand 18 states and 3579 transitions. [2022-01-19 12:38:35,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 355 transitions, 1477 flow [2022-01-19 12:38:35,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 355 transitions, 1413 flow, removed 13 selfloop flow, removed 11 redundant places. [2022-01-19 12:38:35,175 INFO L242 Difference]: Finished difference. Result has 335 places, 291 transitions, 893 flow [2022-01-19 12:38:35,176 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=893, PETRI_PLACES=335, PETRI_TRANSITIONS=291} [2022-01-19 12:38:35,178 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 63 predicate places. [2022-01-19 12:38:35,178 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 291 transitions, 893 flow [2022-01-19 12:38:35,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:35,179 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 12:38:35,180 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1659496064, now seen corresponding path program 1 times [2022-01-19 12:38:35,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:35,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731371469] [2022-01-19 12:38:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:35,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:35,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:35,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731371469] [2022-01-19 12:38:35,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731371469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:35,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:38:35,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:38:35,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447464856] [2022-01-19 12:38:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:35,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:38:35,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:38:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:38:35,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 306 [2022-01-19 12:38:35,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 291 transitions, 893 flow. Second operand has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:35,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 306 [2022-01-19 12:38:35,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:35,533 INFO L129 PetriNetUnfolder]: 42/1202 cut-off events. [2022-01-19 12:38:35,533 INFO L130 PetriNetUnfolder]: For 370/385 co-relation queries the response was YES. [2022-01-19 12:38:35,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1202 events. 42/1202 cut-off events. For 370/385 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6698 event pairs, 3 based on Foata normal form. 12/1157 useless extension candidates. Maximal degree in co-relation 1951. Up to 281 conditions per place. [2022-01-19 12:38:35,542 INFO L132 encePairwiseOnDemand]: 300/306 looper letters, 52 selfloop transitions, 5 changer transitions 7/297 dead transitions. [2022-01-19 12:38:35,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 297 transitions, 1044 flow [2022-01-19 12:38:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:38:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:38:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-01-19 12:38:35,545 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7766884531590414 [2022-01-19 12:38:35,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-01-19 12:38:35,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-01-19 12:38:35,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:35,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-01-19 12:38:35,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,553 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,553 INFO L186 Difference]: Start difference. First operand has 335 places, 291 transitions, 893 flow. Second operand 6 states and 1426 transitions. [2022-01-19 12:38:35,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 297 transitions, 1044 flow [2022-01-19 12:38:35,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 297 transitions, 971 flow, removed 15 selfloop flow, removed 22 redundant places. [2022-01-19 12:38:35,561 INFO L242 Difference]: Finished difference. Result has 311 places, 290 transitions, 834 flow [2022-01-19 12:38:35,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=834, PETRI_PLACES=311, PETRI_TRANSITIONS=290} [2022-01-19 12:38:35,562 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 39 predicate places. [2022-01-19 12:38:35,563 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 290 transitions, 834 flow [2022-01-19 12:38:35,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:35,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:35,564 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:35,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 12:38:35,565 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1688312523, now seen corresponding path program 1 times [2022-01-19 12:38:35,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:35,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390321985] [2022-01-19 12:38:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:35,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 12:38:35,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:35,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390321985] [2022-01-19 12:38:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390321985] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:35,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187100238] [2022-01-19 12:38:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:35,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:35,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:35,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:35,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 12:38:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:35,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:38:35,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:36,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 12:38:36,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187100238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:38:36,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 12:38:36,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2022-01-19 12:38:36,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087280747] [2022-01-19 12:38:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:36,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 12:38:36,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 12:38:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-19 12:38:36,495 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-01-19 12:38:36,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 290 transitions, 834 flow. Second operand has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:36,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:36,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-01-19 12:38:36,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:37,167 INFO L129 PetriNetUnfolder]: 862/3853 cut-off events. [2022-01-19 12:38:37,168 INFO L130 PetriNetUnfolder]: For 2432/2638 co-relation queries the response was YES. [2022-01-19 12:38:37,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 3853 events. 862/3853 cut-off events. For 2432/2638 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 33473 event pairs, 297 based on Foata normal form. 34/3487 useless extension candidates. Maximal degree in co-relation 6615. Up to 664 conditions per place. [2022-01-19 12:38:37,210 INFO L132 encePairwiseOnDemand]: 294/306 looper letters, 86 selfloop transitions, 8 changer transitions 12/323 dead transitions. [2022-01-19 12:38:37,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 323 transitions, 1134 flow [2022-01-19 12:38:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 12:38:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 12:38:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2136 transitions. [2022-01-19 12:38:37,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.775599128540305 [2022-01-19 12:38:37,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2136 transitions. [2022-01-19 12:38:37,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2136 transitions. [2022-01-19 12:38:37,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:37,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2136 transitions. [2022-01-19 12:38:37,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.33333333333334) internal successors, (2136), 9 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:37,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:37,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:37,225 INFO L186 Difference]: Start difference. First operand has 311 places, 290 transitions, 834 flow. Second operand 9 states and 2136 transitions. [2022-01-19 12:38:37,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 323 transitions, 1134 flow [2022-01-19 12:38:37,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 323 transitions, 1108 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-01-19 12:38:37,237 INFO L242 Difference]: Finished difference. Result has 313 places, 291 transitions, 842 flow [2022-01-19 12:38:37,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=842, PETRI_PLACES=313, PETRI_TRANSITIONS=291} [2022-01-19 12:38:37,238 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 41 predicate places. [2022-01-19 12:38:37,238 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 291 transitions, 842 flow [2022-01-19 12:38:37,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:37,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:37,239 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:37,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 12:38:37,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:37,454 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash 599253467, now seen corresponding path program 1 times [2022-01-19 12:38:37,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:37,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075829173] [2022-01-19 12:38:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:37,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:37,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:37,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075829173] [2022-01-19 12:38:37,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075829173] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:37,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373628946] [2022-01-19 12:38:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:37,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:37,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:37,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:37,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 12:38:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:37,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 12:38:37,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:38,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:38:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:39,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373628946] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:39,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 12:38:39,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 25 [2022-01-19 12:38:39,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695717706] [2022-01-19 12:38:39,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:39,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:38:39,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:38:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-01-19 12:38:39,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-01-19 12:38:39,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 291 transitions, 842 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:39,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:39,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-01-19 12:38:39,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:40,163 INFO L129 PetriNetUnfolder]: 1106/4458 cut-off events. [2022-01-19 12:38:40,163 INFO L130 PetriNetUnfolder]: For 2251/2390 co-relation queries the response was YES. [2022-01-19 12:38:40,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 4458 events. 1106/4458 cut-off events. For 2251/2390 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 39016 event pairs, 326 based on Foata normal form. 56/4198 useless extension candidates. Maximal degree in co-relation 7920. Up to 664 conditions per place. [2022-01-19 12:38:40,201 INFO L132 encePairwiseOnDemand]: 290/306 looper letters, 130 selfloop transitions, 13 changer transitions 5/353 dead transitions. [2022-01-19 12:38:40,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 353 transitions, 1346 flow [2022-01-19 12:38:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 12:38:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 12:38:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3392 transitions. [2022-01-19 12:38:40,206 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7389978213507625 [2022-01-19 12:38:40,207 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3392 transitions. [2022-01-19 12:38:40,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3392 transitions. [2022-01-19 12:38:40,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:40,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3392 transitions. [2022-01-19 12:38:40,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 226.13333333333333) internal successors, (3392), 15 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:40,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:40,220 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:40,220 INFO L186 Difference]: Start difference. First operand has 313 places, 291 transitions, 842 flow. Second operand 15 states and 3392 transitions. [2022-01-19 12:38:40,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 353 transitions, 1346 flow [2022-01-19 12:38:40,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 353 transitions, 1320 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-01-19 12:38:40,232 INFO L242 Difference]: Finished difference. Result has 325 places, 293 transitions, 874 flow [2022-01-19 12:38:40,232 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=874, PETRI_PLACES=325, PETRI_TRANSITIONS=293} [2022-01-19 12:38:40,233 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 53 predicate places. [2022-01-19 12:38:40,233 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 293 transitions, 874 flow [2022-01-19 12:38:40,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:40,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:40,234 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:40,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 12:38:40,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:40,448 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2085825507, now seen corresponding path program 1 times [2022-01-19 12:38:40,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:40,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625340638] [2022-01-19 12:38:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:40,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 12:38:40,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:40,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625340638] [2022-01-19 12:38:40,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625340638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:40,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348290696] [2022-01-19 12:38:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:40,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:40,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:40,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 12:38:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:40,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:38:40,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 12:38:41,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:38:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 12:38:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348290696] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:41,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 12:38:41,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-01-19 12:38:41,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695238703] [2022-01-19 12:38:41,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:41,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 12:38:41,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 12:38:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-19 12:38:41,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-01-19 12:38:41,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 293 transitions, 874 flow. Second operand has 8 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:41,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:41,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-01-19 12:38:41,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:42,544 INFO L129 PetriNetUnfolder]: 827/4706 cut-off events. [2022-01-19 12:38:42,544 INFO L130 PetriNetUnfolder]: For 2253/2389 co-relation queries the response was YES. [2022-01-19 12:38:42,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7871 conditions, 4706 events. 827/4706 cut-off events. For 2253/2389 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 43266 event pairs, 320 based on Foata normal form. 96/4450 useless extension candidates. Maximal degree in co-relation 7840. Up to 632 conditions per place. [2022-01-19 12:38:42,590 INFO L132 encePairwiseOnDemand]: 291/306 looper letters, 92 selfloop transitions, 19 changer transitions 0/332 dead transitions. [2022-01-19 12:38:42,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 332 transitions, 1216 flow [2022-01-19 12:38:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 12:38:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 12:38:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3039 transitions. [2022-01-19 12:38:42,594 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639517345399698 [2022-01-19 12:38:42,594 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3039 transitions. [2022-01-19 12:38:42,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3039 transitions. [2022-01-19 12:38:42,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:42,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3039 transitions. [2022-01-19 12:38:42,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:42,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:42,603 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:42,603 INFO L186 Difference]: Start difference. First operand has 325 places, 293 transitions, 874 flow. Second operand 13 states and 3039 transitions. [2022-01-19 12:38:42,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 332 transitions, 1216 flow [2022-01-19 12:38:42,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 332 transitions, 1182 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-01-19 12:38:42,619 INFO L242 Difference]: Finished difference. Result has 326 places, 301 transitions, 929 flow [2022-01-19 12:38:42,619 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=929, PETRI_PLACES=326, PETRI_TRANSITIONS=301} [2022-01-19 12:38:42,620 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 54 predicate places. [2022-01-19 12:38:42,620 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 301 transitions, 929 flow [2022-01-19 12:38:42,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:42,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:42,621 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:42,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 12:38:42,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-19 12:38:42,836 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2132776638, now seen corresponding path program 1 times [2022-01-19 12:38:42,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:42,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944560369] [2022-01-19 12:38:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:42,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 12:38:42,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:42,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944560369] [2022-01-19 12:38:42,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944560369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:42,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434326083] [2022-01-19 12:38:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:42,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:42,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:42,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:42,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 12:38:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:43,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 12:38:43,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 12:38:43,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:38:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 12:38:44,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434326083] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:44,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 12:38:44,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 27 [2022-01-19 12:38:44,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329986941] [2022-01-19 12:38:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:38:44,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 12:38:44,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 12:38:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-01-19 12:38:44,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-01-19 12:38:44,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 301 transitions, 929 flow. Second operand has 11 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:44,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:44,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-01-19 12:38:44,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:38:45,696 INFO L129 PetriNetUnfolder]: 1240/6440 cut-off events. [2022-01-19 12:38:45,696 INFO L130 PetriNetUnfolder]: For 4439/4665 co-relation queries the response was YES. [2022-01-19 12:38:45,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 6440 events. 1240/6440 cut-off events. For 4439/4665 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 62402 event pairs, 444 based on Foata normal form. 165/6257 useless extension candidates. Maximal degree in co-relation 11834. Up to 956 conditions per place. [2022-01-19 12:38:45,735 INFO L132 encePairwiseOnDemand]: 292/306 looper letters, 143 selfloop transitions, 12 changer transitions 9/372 dead transitions. [2022-01-19 12:38:45,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 372 transitions, 1537 flow [2022-01-19 12:38:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 12:38:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 12:38:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2956 transitions. [2022-01-19 12:38:45,738 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.743086978381096 [2022-01-19 12:38:45,738 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2956 transitions. [2022-01-19 12:38:45,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2956 transitions. [2022-01-19 12:38:45,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:38:45,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2956 transitions. [2022-01-19 12:38:45,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.3846153846154) internal successors, (2956), 13 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:45,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:45,836 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:45,836 INFO L186 Difference]: Start difference. First operand has 326 places, 301 transitions, 929 flow. Second operand 13 states and 2956 transitions. [2022-01-19 12:38:45,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 372 transitions, 1537 flow [2022-01-19 12:38:45,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 372 transitions, 1521 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-01-19 12:38:45,854 INFO L242 Difference]: Finished difference. Result has 339 places, 303 transitions, 960 flow [2022-01-19 12:38:45,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=960, PETRI_PLACES=339, PETRI_TRANSITIONS=303} [2022-01-19 12:38:45,856 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 67 predicate places. [2022-01-19 12:38:45,856 INFO L470 AbstractCegarLoop]: Abstraction has has 339 places, 303 transitions, 960 flow [2022-01-19 12:38:45,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:45,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:38:45,857 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:45,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 12:38:46,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:46,081 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:38:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:38:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1800394205, now seen corresponding path program 1 times [2022-01-19 12:38:46,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:38:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875249544] [2022-01-19 12:38:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:46,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:38:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:47,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:38:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875249544] [2022-01-19 12:38:47,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875249544] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:38:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016160955] [2022-01-19 12:38:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:38:47,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:38:47,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:38:47,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:38:47,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 12:38:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:38:47,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-19 12:38:47,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:38:48,984 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-19 12:38:48,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-19 12:38:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:49,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:38:51,772 INFO L353 Elim1Store]: treesize reduction 62, result has 77.6 percent of original size [2022-01-19 12:38:51,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 226 [2022-01-19 12:38:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:38:53,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016160955] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 12:38:53,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 12:38:53,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 13] total 42 [2022-01-19 12:38:53,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650161528] [2022-01-19 12:38:53,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 12:38:53,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-19 12:38:53,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:38:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-19 12:38:53,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1501, Unknown=3, NotChecked=0, Total=1722 [2022-01-19 12:38:53,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-01-19 12:38:53,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 303 transitions, 960 flow. Second operand has 42 states, 42 states have (on average 194.73809523809524) internal successors, (8179), 42 states have internal predecessors, (8179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:38:53,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:38:53,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-01-19 12:38:53,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:39:23,639 INFO L129 PetriNetUnfolder]: 133464/210818 cut-off events. [2022-01-19 12:39:23,639 INFO L130 PetriNetUnfolder]: For 187812/187812 co-relation queries the response was YES. [2022-01-19 12:39:25,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492073 conditions, 210818 events. 133464/210818 cut-off events. For 187812/187812 co-relation queries the response was YES. Maximal size of possible extension queue 6079. Compared 1966701 event pairs, 16534 based on Foata normal form. 0/197463 useless extension candidates. Maximal degree in co-relation 492036. Up to 56921 conditions per place. [2022-01-19 12:39:26,371 INFO L132 encePairwiseOnDemand]: 257/306 looper letters, 1422 selfloop transitions, 358 changer transitions 61/2027 dead transitions. [2022-01-19 12:39:26,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 2027 transitions, 10088 flow [2022-01-19 12:39:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-19 12:39:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2022-01-19 12:39:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22057 transitions. [2022-01-19 12:39:26,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6800160315698607 [2022-01-19 12:39:26,399 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22057 transitions. [2022-01-19 12:39:26,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22057 transitions. [2022-01-19 12:39:26,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:39:26,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22057 transitions. [2022-01-19 12:39:26,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 208.08490566037736) internal successors, (22057), 106 states have internal predecessors, (22057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:39:26,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 306.0) internal successors, (32742), 107 states have internal predecessors, (32742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:39:26,473 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 306.0) internal successors, (32742), 107 states have internal predecessors, (32742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:39:26,473 INFO L186 Difference]: Start difference. First operand has 339 places, 303 transitions, 960 flow. Second operand 106 states and 22057 transitions. [2022-01-19 12:39:26,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 2027 transitions, 10088 flow [2022-01-19 12:39:29,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 2027 transitions, 10040 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 12:39:29,812 INFO L242 Difference]: Finished difference. Result has 503 places, 648 transitions, 4011 flow [2022-01-19 12:39:29,812 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=4011, PETRI_PLACES=503, PETRI_TRANSITIONS=648} [2022-01-19 12:39:29,813 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 231 predicate places. [2022-01-19 12:39:29,813 INFO L470 AbstractCegarLoop]: Abstraction has has 503 places, 648 transitions, 4011 flow [2022-01-19 12:39:29,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 194.73809523809524) internal successors, (8179), 42 states have internal predecessors, (8179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:39:29,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:39:29,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:29,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 12:39:30,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:39:30,015 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:39:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:39:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1787509449, now seen corresponding path program 2 times [2022-01-19 12:39:30,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:39:30,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118514916] [2022-01-19 12:39:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:39:30,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:39:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:39:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:39:30,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:39:30,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118514916] [2022-01-19 12:39:30,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118514916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:39:30,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:39:30,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-19 12:39:30,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856158013] [2022-01-19 12:39:30,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:39:30,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 12:39:30,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:39:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 12:39:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2022-01-19 12:39:30,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-01-19 12:39:30,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 648 transitions, 4011 flow. Second operand has 29 states, 29 states have (on average 193.79310344827587) internal successors, (5620), 29 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:39:30,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:39:30,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-01-19 12:39:30,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:28,966 INFO L129 PetriNetUnfolder]: 142208/221250 cut-off events. [2022-01-19 12:40:28,966 INFO L130 PetriNetUnfolder]: For 3177392/3177526 co-relation queries the response was YES. [2022-01-19 12:40:35,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1037221 conditions, 221250 events. 142208/221250 cut-off events. For 3177392/3177526 co-relation queries the response was YES. Maximal size of possible extension queue 6646. Compared 2045739 event pairs, 36174 based on Foata normal form. 123/220689 useless extension candidates. Maximal degree in co-relation 1037116. Up to 102572 conditions per place. [2022-01-19 12:40:36,848 INFO L132 encePairwiseOnDemand]: 259/306 looper letters, 1259 selfloop transitions, 517 changer transitions 0/1962 dead transitions. [2022-01-19 12:40:36,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1962 transitions, 18102 flow [2022-01-19 12:40:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-19 12:40:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-01-19 12:40:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 15184 transitions. [2022-01-19 12:40:36,975 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6705529058470235 [2022-01-19 12:40:36,975 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 15184 transitions. [2022-01-19 12:40:36,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 15184 transitions. [2022-01-19 12:40:37,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:37,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 15184 transitions. [2022-01-19 12:40:37,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 205.1891891891892) internal successors, (15184), 74 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:40:37,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 306.0) internal successors, (22950), 75 states have internal predecessors, (22950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:40:37,098 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 306.0) internal successors, (22950), 75 states have internal predecessors, (22950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:40:37,098 INFO L186 Difference]: Start difference. First operand has 503 places, 648 transitions, 4011 flow. Second operand 74 states and 15184 transitions. [2022-01-19 12:40:37,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1962 transitions, 18102 flow [2022-01-19 12:41:57,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1962 transitions, 17576 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-01-19 12:41:57,683 INFO L242 Difference]: Finished difference. Result has 591 places, 1013 transitions, 9566 flow [2022-01-19 12:41:57,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3773, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=9566, PETRI_PLACES=591, PETRI_TRANSITIONS=1013} [2022-01-19 12:41:57,684 INFO L334 CegarLoopForPetriNet]: 272 programPoint places, 319 predicate places. [2022-01-19 12:41:57,684 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 1013 transitions, 9566 flow [2022-01-19 12:41:57,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 193.79310344827587) internal successors, (5620), 29 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:57,685 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:57,685 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:57,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 12:41:57,685 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 12:41:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 662796811, now seen corresponding path program 3 times [2022-01-19 12:41:57,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:57,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298228809] [2022-01-19 12:41:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:57,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 12:41:58,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:58,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298228809] [2022-01-19 12:41:58,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298228809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:58,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:58,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-01-19 12:41:58,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142762015] [2022-01-19 12:41:58,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:58,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-19 12:41:58,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:58,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-19 12:41:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-01-19 12:41:58,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 306 [2022-01-19 12:41:58,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1013 transitions, 9566 flow. Second operand has 32 states, 32 states have (on average 187.65625) internal successors, (6005), 32 states have internal predecessors, (6005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:58,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:58,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 306 [2022-01-19 12:41:58,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:43:42,513 INFO L129 PetriNetUnfolder]: 188162/290908 cut-off events. [2022-01-19 12:43:42,514 INFO L130 PetriNetUnfolder]: For 7525014/7525424 co-relation queries the response was YES.