/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 09:21:06,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 09:21:06,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 09:21:06,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 09:21:06,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 09:21:06,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 09:21:06,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 09:21:06,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 09:21:06,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 09:21:06,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 09:21:06,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 09:21:06,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 09:21:06,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 09:21:06,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 09:21:06,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 09:21:06,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 09:21:06,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 09:21:06,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 09:21:06,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 09:21:06,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 09:21:06,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 09:21:06,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 09:21:06,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 09:21:06,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 09:21:06,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 09:21:06,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 09:21:06,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 09:21:06,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 09:21:06,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 09:21:06,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 09:21:06,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 09:21:06,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 09:21:06,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 09:21:06,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 09:21:06,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 09:21:06,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 09:21:06,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 09:21:06,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 09:21:06,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 09:21:06,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 09:21:06,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 09:21:06,456 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-Before.epf [2022-01-19 09:21:06,482 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 09:21:06,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 09:21:06,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 09:21:06,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 09:21:06,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 09:21:06,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 09:21:06,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 09:21:06,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 09:21:06,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 09:21:06,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 09:21:06,485 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 09:21:06,485 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 09:21:06,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 09:21:06,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 09:21:06,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 09:21:06,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 09:21:06,674 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 09:21:06,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2022-01-19 09:21:06,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbcb88dd/09c43c5d33ce494a879719ac29ab8072/FLAGb2ea1cea9 [2022-01-19 09:21:07,125 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 09:21:07,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2022-01-19 09:21:07,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbcb88dd/09c43c5d33ce494a879719ac29ab8072/FLAGb2ea1cea9 [2022-01-19 09:21:07,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddbcb88dd/09c43c5d33ce494a879719ac29ab8072 [2022-01-19 09:21:07,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 09:21:07,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 09:21:07,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 09:21:07,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 09:21:07,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 09:21:07,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca14d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07, skipping insertion in model container [2022-01-19 09:21:07,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 09:21:07,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 09:21:07,360 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/unroll-cond-2.wvr.c[2474,2487] [2022-01-19 09:21:07,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 09:21:07,375 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 09:21:07,404 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/unroll-cond-2.wvr.c[2474,2487] [2022-01-19 09:21:07,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 09:21:07,417 INFO L208 MainTranslator]: Completed translation [2022-01-19 09:21:07,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07 WrapperNode [2022-01-19 09:21:07,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 09:21:07,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 09:21:07,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 09:21:07,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 09:21:07,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,455 INFO L137 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 141 [2022-01-19 09:21:07,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 09:21:07,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 09:21:07,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 09:21:07,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 09:21:07,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 09:21:07,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 09:21:07,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 09:21:07,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 09:21:07,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (1/1) ... [2022-01-19 09:21:07,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 09:21:07,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:07,514 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 09:21:07,532 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 09:21:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 09:21:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 09:21:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 09:21:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 09:21:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 09:21:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 09:21:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 09:21:07,539 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 09:21:07,588 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 09:21:07,589 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 09:21:07,753 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 09:21:07,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 09:21:07,759 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 09:21:07,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 09:21:07 BoogieIcfgContainer [2022-01-19 09:21:07,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 09:21:07,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 09:21:07,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 09:21:07,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 09:21:07,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 09:21:07" (1/3) ... [2022-01-19 09:21:07,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a82814c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 09:21:07, skipping insertion in model container [2022-01-19 09:21:07,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:21:07" (2/3) ... [2022-01-19 09:21:07,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a82814c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 09:21:07, skipping insertion in model container [2022-01-19 09:21:07,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 09:21:07" (3/3) ... [2022-01-19 09:21:07,782 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2022-01-19 09:21:07,785 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 09:21:07,786 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 09:21:07,786 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 09:21:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,862 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,863 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:21:07,865 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 09:21:07,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 09:21:07,897 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 09:21:07,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 09:21:07,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 179 transitions, 374 flow [2022-01-19 09:21:07,973 INFO L129 PetriNetUnfolder]: 15/177 cut-off events. [2022-01-19 09:21:07,974 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 09:21:07,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 177 events. 15/177 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-01-19 09:21:07,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 179 transitions, 374 flow [2022-01-19 09:21:07,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 348 flow [2022-01-19 09:21:08,021 INFO L129 PetriNetUnfolder]: 14/165 cut-off events. [2022-01-19 09:21:08,021 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 09:21:08,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:08,022 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] [2022-01-19 09:21:08,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash -999352640, now seen corresponding path program 1 times [2022-01-19 09:21:08,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:08,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826935825] [2022-01-19 09:21:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:08,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:08,226 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 09:21:08,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:08,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826935825] [2022-01-19 09:21:08,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826935825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:08,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:08,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 09:21:08,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260773097] [2022-01-19 09:21:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:08,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 09:21:08,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 09:21:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 09:21:08,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 179 [2022-01-19 09:21:08,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 168 transitions, 348 flow. Second operand has 2 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:08,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 179 [2022-01-19 09:21:08,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:08,316 INFO L129 PetriNetUnfolder]: 4/157 cut-off events. [2022-01-19 09:21:08,317 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-01-19 09:21:08,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 157 events. 4/157 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 14/159 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-01-19 09:21:08,320 INFO L132 encePairwiseOnDemand]: 168/179 looper letters, 4 selfloop transitions, 0 changer transitions 4/157 dead transitions. [2022-01-19 09:21:08,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 334 flow [2022-01-19 09:21:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 09:21:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 09:21:08,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 341 transitions. [2022-01-19 09:21:08,334 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.952513966480447 [2022-01-19 09:21:08,334 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 341 transitions. [2022-01-19 09:21:08,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 341 transitions. [2022-01-19 09:21:08,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:08,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 341 transitions. [2022-01-19 09:21:08,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 170.5) internal successors, (341), 2 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,343 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,344 INFO L186 Difference]: Start difference. First operand has 160 places, 168 transitions, 348 flow. Second operand 2 states and 341 transitions. [2022-01-19 09:21:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 334 flow [2022-01-19 09:21:08,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 09:21:08,351 INFO L242 Difference]: Finished difference. Result has 157 places, 153 transitions, 310 flow [2022-01-19 09:21:08,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=310, PETRI_PLACES=157, PETRI_TRANSITIONS=153} [2022-01-19 09:21:08,356 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, -3 predicate places. [2022-01-19 09:21:08,356 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 153 transitions, 310 flow [2022-01-19 09:21:08,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:08,357 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] [2022-01-19 09:21:08,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 09:21:08,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2047656499, now seen corresponding path program 1 times [2022-01-19 09:21:08,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:08,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126848751] [2022-01-19 09:21:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:08,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:08,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:08,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126848751] [2022-01-19 09:21:08,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126848751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:08,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:08,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 09:21:08,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81854739] [2022-01-19 09:21:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:08,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 09:21:08,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 09:21:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 09:21:08,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-01-19 09:21:08,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 153 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:08,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-01-19 09:21:08,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:08,797 INFO L129 PetriNetUnfolder]: 149/816 cut-off events. [2022-01-19 09:21:08,797 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-01-19 09:21:08,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 816 events. 149/816 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5009 event pairs, 65 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 1109. Up to 152 conditions per place. [2022-01-19 09:21:08,801 INFO L132 encePairwiseOnDemand]: 170/179 looper letters, 48 selfloop transitions, 7 changer transitions 0/186 dead transitions. [2022-01-19 09:21:08,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 186 transitions, 491 flow [2022-01-19 09:21:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 09:21:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 09:21:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 927 transitions. [2022-01-19 09:21:08,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8631284916201117 [2022-01-19 09:21:08,804 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 927 transitions. [2022-01-19 09:21:08,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 927 transitions. [2022-01-19 09:21:08,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:08,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 927 transitions. [2022-01-19 09:21:08,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,810 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,810 INFO L186 Difference]: Start difference. First operand has 157 places, 153 transitions, 310 flow. Second operand 6 states and 927 transitions. [2022-01-19 09:21:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 186 transitions, 491 flow [2022-01-19 09:21:08,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 186 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 09:21:08,813 INFO L242 Difference]: Finished difference. Result has 161 places, 157 transitions, 352 flow [2022-01-19 09:21:08,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2022-01-19 09:21:08,814 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-01-19 09:21:08,814 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 352 flow [2022-01-19 09:21:08,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:08,815 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] [2022-01-19 09:21:08,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 09:21:08,815 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1248426905, now seen corresponding path program 2 times [2022-01-19 09:21:08,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:08,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161128957] [2022-01-19 09:21:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:08,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:08,890 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 09:21:08,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:08,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161128957] [2022-01-19 09:21:08,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161128957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:08,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:08,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 09:21:08,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204458225] [2022-01-19 09:21:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:08,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 09:21:08,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 09:21:08,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 09:21:08,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 179 [2022-01-19 09:21:08,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:08,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:08,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 179 [2022-01-19 09:21:08,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:09,013 INFO L129 PetriNetUnfolder]: 132/851 cut-off events. [2022-01-19 09:21:09,014 INFO L130 PetriNetUnfolder]: For 141/168 co-relation queries the response was YES. [2022-01-19 09:21:09,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 851 events. 132/851 cut-off events. For 141/168 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5375 event pairs, 61 based on Foata normal form. 34/829 useless extension candidates. Maximal degree in co-relation 1253. Up to 165 conditions per place. [2022-01-19 09:21:09,018 INFO L132 encePairwiseOnDemand]: 173/179 looper letters, 33 selfloop transitions, 8 changer transitions 0/176 dead transitions. [2022-01-19 09:21:09,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 176 transitions, 496 flow [2022-01-19 09:21:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 09:21:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 09:21:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 629 transitions. [2022-01-19 09:21:09,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8784916201117319 [2022-01-19 09:21:09,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 629 transitions. [2022-01-19 09:21:09,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 629 transitions. [2022-01-19 09:21:09,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:09,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 629 transitions. [2022-01-19 09:21:09,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,023 INFO L186 Difference]: Start difference. First operand has 161 places, 157 transitions, 352 flow. Second operand 4 states and 629 transitions. [2022-01-19 09:21:09,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 176 transitions, 496 flow [2022-01-19 09:21:09,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 176 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 09:21:09,026 INFO L242 Difference]: Finished difference. Result has 164 places, 162 transitions, 398 flow [2022-01-19 09:21:09,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=164, PETRI_TRANSITIONS=162} [2022-01-19 09:21:09,027 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 4 predicate places. [2022-01-19 09:21:09,027 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 162 transitions, 398 flow [2022-01-19 09:21:09,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:09,028 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] [2022-01-19 09:21:09,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 09:21:09,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 561552515, now seen corresponding path program 1 times [2022-01-19 09:21:09,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:09,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951207702] [2022-01-19 09:21:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:09,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:09,198 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 09:21:09,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:09,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951207702] [2022-01-19 09:21:09,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951207702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:09,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:09,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 09:21:09,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877784473] [2022-01-19 09:21:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:09,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 09:21:09,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:09,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 09:21:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 09:21:09,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-01-19 09:21:09,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 162 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:09,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-01-19 09:21:09,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:09,477 INFO L129 PetriNetUnfolder]: 268/1433 cut-off events. [2022-01-19 09:21:09,477 INFO L130 PetriNetUnfolder]: For 426/440 co-relation queries the response was YES. [2022-01-19 09:21:09,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 1433 events. 268/1433 cut-off events. For 426/440 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10141 event pairs, 95 based on Foata normal form. 10/1343 useless extension candidates. Maximal degree in co-relation 2416. Up to 263 conditions per place. [2022-01-19 09:21:09,483 INFO L132 encePairwiseOnDemand]: 170/179 looper letters, 69 selfloop transitions, 16 changer transitions 1/217 dead transitions. [2022-01-19 09:21:09,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 217 transitions, 802 flow [2022-01-19 09:21:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 09:21:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 09:21:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 943 transitions. [2022-01-19 09:21:09,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8780260707635009 [2022-01-19 09:21:09,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 943 transitions. [2022-01-19 09:21:09,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 943 transitions. [2022-01-19 09:21:09,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:09,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 943 transitions. [2022-01-19 09:21:09,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.16666666666666) internal successors, (943), 6 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,489 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,489 INFO L186 Difference]: Start difference. First operand has 164 places, 162 transitions, 398 flow. Second operand 6 states and 943 transitions. [2022-01-19 09:21:09,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 217 transitions, 802 flow [2022-01-19 09:21:09,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 217 transitions, 802 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 09:21:09,495 INFO L242 Difference]: Finished difference. Result has 173 places, 174 transitions, 553 flow [2022-01-19 09:21:09,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=553, PETRI_PLACES=173, PETRI_TRANSITIONS=174} [2022-01-19 09:21:09,496 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 13 predicate places. [2022-01-19 09:21:09,496 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 174 transitions, 553 flow [2022-01-19 09:21:09,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,496 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:09,497 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] [2022-01-19 09:21:09,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 09:21:09,497 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:09,497 INFO L85 PathProgramCache]: Analyzing trace with hash 989028107, now seen corresponding path program 2 times [2022-01-19 09:21:09,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:09,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115354128] [2022-01-19 09:21:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:09,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:09,651 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 09:21:09,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115354128] [2022-01-19 09:21:09,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115354128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:09,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:09,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 09:21:09,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198151442] [2022-01-19 09:21:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:09,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 09:21:09,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 09:21:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 09:21:09,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-01-19 09:21:09,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 174 transitions, 553 flow. Second operand has 7 states, 7 states have (on average 146.85714285714286) internal successors, (1028), 7 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:09,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-01-19 09:21:09,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:09,858 INFO L129 PetriNetUnfolder]: 274/1476 cut-off events. [2022-01-19 09:21:09,859 INFO L130 PetriNetUnfolder]: For 1043/1047 co-relation queries the response was YES. [2022-01-19 09:21:09,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 1476 events. 274/1476 cut-off events. For 1043/1047 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10581 event pairs, 103 based on Foata normal form. 6/1383 useless extension candidates. Maximal degree in co-relation 2811. Up to 292 conditions per place. [2022-01-19 09:21:09,865 INFO L132 encePairwiseOnDemand]: 171/179 looper letters, 63 selfloop transitions, 22 changer transitions 1/217 dead transitions. [2022-01-19 09:21:09,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 217 transitions, 945 flow [2022-01-19 09:21:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 09:21:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 09:21:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1076 transitions. [2022-01-19 09:21:09,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8587390263367917 [2022-01-19 09:21:09,867 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1076 transitions. [2022-01-19 09:21:09,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1076 transitions. [2022-01-19 09:21:09,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:09,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1076 transitions. [2022-01-19 09:21:09,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.71428571428572) internal successors, (1076), 7 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,871 INFO L186 Difference]: Start difference. First operand has 173 places, 174 transitions, 553 flow. Second operand 7 states and 1076 transitions. [2022-01-19 09:21:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 217 transitions, 945 flow [2022-01-19 09:21:09,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 217 transitions, 945 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 09:21:09,876 INFO L242 Difference]: Finished difference. Result has 183 places, 179 transitions, 661 flow [2022-01-19 09:21:09,876 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=183, PETRI_TRANSITIONS=179} [2022-01-19 09:21:09,877 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 23 predicate places. [2022-01-19 09:21:09,877 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 179 transitions, 661 flow [2022-01-19 09:21:09,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.85714285714286) internal successors, (1028), 7 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,877 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:09,877 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] [2022-01-19 09:21:09,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 09:21:09,878 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1515646687, now seen corresponding path program 3 times [2022-01-19 09:21:09,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:09,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181819256] [2022-01-19 09:21:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:09,963 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 09:21:09,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:09,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181819256] [2022-01-19 09:21:09,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181819256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:09,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:09,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 09:21:09,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236307587] [2022-01-19 09:21:09,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:09,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 09:21:09,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 09:21:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 09:21:09,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-01-19 09:21:09,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 179 transitions, 661 flow. Second operand has 7 states, 7 states have (on average 146.85714285714286) internal successors, (1028), 7 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:09,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:09,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-01-19 09:21:09,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:10,195 INFO L129 PetriNetUnfolder]: 274/1435 cut-off events. [2022-01-19 09:21:10,195 INFO L130 PetriNetUnfolder]: For 1929/1929 co-relation queries the response was YES. [2022-01-19 09:21:10,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 1435 events. 274/1435 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10195 event pairs, 105 based on Foata normal form. 3/1339 useless extension candidates. Maximal degree in co-relation 2998. Up to 206 conditions per place. [2022-01-19 09:21:10,203 INFO L132 encePairwiseOnDemand]: 170/179 looper letters, 70 selfloop transitions, 29 changer transitions 1/231 dead transitions. [2022-01-19 09:21:10,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 231 transitions, 1152 flow [2022-01-19 09:21:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 09:21:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 09:21:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1235 transitions. [2022-01-19 09:21:10,206 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8624301675977654 [2022-01-19 09:21:10,206 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1235 transitions. [2022-01-19 09:21:10,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1235 transitions. [2022-01-19 09:21:10,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:10,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1235 transitions. [2022-01-19 09:21:10,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.375) internal successors, (1235), 8 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,210 INFO L186 Difference]: Start difference. First operand has 183 places, 179 transitions, 661 flow. Second operand 8 states and 1235 transitions. [2022-01-19 09:21:10,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 231 transitions, 1152 flow [2022-01-19 09:21:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 231 transitions, 1102 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-01-19 09:21:10,218 INFO L242 Difference]: Finished difference. Result has 190 places, 187 transitions, 787 flow [2022-01-19 09:21:10,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=190, PETRI_TRANSITIONS=187} [2022-01-19 09:21:10,218 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 30 predicate places. [2022-01-19 09:21:10,218 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 187 transitions, 787 flow [2022-01-19 09:21:10,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.85714285714286) internal successors, (1028), 7 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:10,220 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] [2022-01-19 09:21:10,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 09:21:10,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash 11227386, now seen corresponding path program 1 times [2022-01-19 09:21:10,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:10,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386006438] [2022-01-19 09:21:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:10,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:10,321 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 09:21:10,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:10,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386006438] [2022-01-19 09:21:10,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386006438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:21:10,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:21:10,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 09:21:10,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086962812] [2022-01-19 09:21:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:10,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 09:21:10,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 09:21:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-01-19 09:21:10,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 179 [2022-01-19 09:21:10,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 187 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 130.75) internal successors, (1046), 8 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:10,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 179 [2022-01-19 09:21:10,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:10,471 INFO L129 PetriNetUnfolder]: 106/1068 cut-off events. [2022-01-19 09:21:10,471 INFO L130 PetriNetUnfolder]: For 971/1011 co-relation queries the response was YES. [2022-01-19 09:21:10,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 1068 events. 106/1068 cut-off events. For 971/1011 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7362 event pairs, 36 based on Foata normal form. 10/999 useless extension candidates. Maximal degree in co-relation 1817. Up to 144 conditions per place. [2022-01-19 09:21:10,478 INFO L132 encePairwiseOnDemand]: 171/179 looper letters, 33 selfloop transitions, 7 changer transitions 0/191 dead transitions. [2022-01-19 09:21:10,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 191 transitions, 875 flow [2022-01-19 09:21:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 09:21:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 09:21:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2022-01-19 09:21:10,481 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7381284916201117 [2022-01-19 09:21:10,481 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2022-01-19 09:21:10,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2022-01-19 09:21:10,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:10,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2022-01-19 09:21:10,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,486 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,486 INFO L186 Difference]: Start difference. First operand has 190 places, 187 transitions, 787 flow. Second operand 8 states and 1057 transitions. [2022-01-19 09:21:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 191 transitions, 875 flow [2022-01-19 09:21:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 191 transitions, 846 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-01-19 09:21:10,495 INFO L242 Difference]: Finished difference. Result has 196 places, 188 transitions, 780 flow [2022-01-19 09:21:10,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=780, PETRI_PLACES=196, PETRI_TRANSITIONS=188} [2022-01-19 09:21:10,496 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 36 predicate places. [2022-01-19 09:21:10,496 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 188 transitions, 780 flow [2022-01-19 09:21:10,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.75) internal successors, (1046), 8 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:10,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:10,497 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] [2022-01-19 09:21:10,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 09:21:10,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash 715964285, now seen corresponding path program 1 times [2022-01-19 09:21:10,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:10,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186279226] [2022-01-19 09:21:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:10,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:10,676 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 09:21:10,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:10,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186279226] [2022-01-19 09:21:10,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186279226] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:10,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030143486] [2022-01-19 09:21:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:10,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:10,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:10,706 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 09:21:10,732 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 09:21:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:10,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-19 09:21:10,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:11,579 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-19 09:21:11,579 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2022-01-19 09:21:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:11,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:11,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:21:11,905 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-01-19 09:21:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:13,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030143486] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:13,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:13,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 38 [2022-01-19 09:21:13,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129252095] [2022-01-19 09:21:13,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:13,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-19 09:21:13,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-19 09:21:13,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2022-01-19 09:21:13,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2022-01-19 09:21:13,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 188 transitions, 780 flow. Second operand has 38 states, 38 states have (on average 79.10526315789474) internal successors, (3006), 38 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:13,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:13,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2022-01-19 09:21:13,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:19,273 INFO L129 PetriNetUnfolder]: 6079/13224 cut-off events. [2022-01-19 09:21:19,273 INFO L130 PetriNetUnfolder]: For 19143/19143 co-relation queries the response was YES. [2022-01-19 09:21:19,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31644 conditions, 13224 events. 6079/13224 cut-off events. For 19143/19143 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 120569 event pairs, 801 based on Foata normal form. 9/12603 useless extension candidates. Maximal degree in co-relation 31621. Up to 2849 conditions per place. [2022-01-19 09:21:19,375 INFO L132 encePairwiseOnDemand]: 133/179 looper letters, 512 selfloop transitions, 105 changer transitions 283/964 dead transitions. [2022-01-19 09:21:19,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 964 transitions, 5535 flow [2022-01-19 09:21:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-19 09:21:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2022-01-19 09:21:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 7546 transitions. [2022-01-19 09:21:19,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.46325741297808337 [2022-01-19 09:21:19,387 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 7546 transitions. [2022-01-19 09:21:19,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 7546 transitions. [2022-01-19 09:21:19,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:19,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 7546 transitions. [2022-01-19 09:21:19,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 82.92307692307692) internal successors, (7546), 91 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:19,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 179.0) internal successors, (16468), 92 states have internal predecessors, (16468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:19,420 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 179.0) internal successors, (16468), 92 states have internal predecessors, (16468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:19,420 INFO L186 Difference]: Start difference. First operand has 196 places, 188 transitions, 780 flow. Second operand 91 states and 7546 transitions. [2022-01-19 09:21:19,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 964 transitions, 5535 flow [2022-01-19 09:21:19,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 964 transitions, 5523 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 09:21:19,455 INFO L242 Difference]: Finished difference. Result has 340 places, 271 transitions, 1628 flow [2022-01-19 09:21:19,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=1628, PETRI_PLACES=340, PETRI_TRANSITIONS=271} [2022-01-19 09:21:19,457 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 180 predicate places. [2022-01-19 09:21:19,457 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 271 transitions, 1628 flow [2022-01-19 09:21:19,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 79.10526315789474) internal successors, (3006), 38 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:19,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:19,468 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] [2022-01-19 09:21:19,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 09:21:19,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:19,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1840390791, now seen corresponding path program 1 times [2022-01-19 09:21:19,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:19,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373209756] [2022-01-19 09:21:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:19,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:19,953 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 09:21:19,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:19,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373209756] [2022-01-19 09:21:19,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373209756] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:19,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389453013] [2022-01-19 09:21:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:19,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:19,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:19,955 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 09:21:19,957 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 09:21:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-19 09:21:20,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:20,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:20,471 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 09:21:20,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:20,557 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 09:21:20,557 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 19 treesize of output 11 [2022-01-19 09:21:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 09:21:20,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389453013] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:20,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:21:20,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 16 [2022-01-19 09:21:20,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003634780] [2022-01-19 09:21:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:20,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 09:21:20,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 09:21:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:21:20,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 179 [2022-01-19 09:21:20,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 271 transitions, 1628 flow. Second operand has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:20,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:20,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 179 [2022-01-19 09:21:20,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:21,786 INFO L129 PetriNetUnfolder]: 1832/5824 cut-off events. [2022-01-19 09:21:21,787 INFO L130 PetriNetUnfolder]: For 16481/16703 co-relation queries the response was YES. [2022-01-19 09:21:21,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16849 conditions, 5824 events. 1832/5824 cut-off events. For 16481/16703 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 53801 event pairs, 339 based on Foata normal form. 32/5651 useless extension candidates. Maximal degree in co-relation 16766. Up to 1102 conditions per place. [2022-01-19 09:21:21,853 INFO L132 encePairwiseOnDemand]: 166/179 looper letters, 117 selfloop transitions, 68 changer transitions 7/382 dead transitions. [2022-01-19 09:21:21,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 382 transitions, 2426 flow [2022-01-19 09:21:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 09:21:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 09:21:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2514 transitions. [2022-01-19 09:21:21,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7022346368715083 [2022-01-19 09:21:21,857 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2514 transitions. [2022-01-19 09:21:21,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2514 transitions. [2022-01-19 09:21:21,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:21,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2514 transitions. [2022-01-19 09:21:21,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 125.7) internal successors, (2514), 20 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:21,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 179.0) internal successors, (3759), 21 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:21,863 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 179.0) internal successors, (3759), 21 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:21,863 INFO L186 Difference]: Start difference. First operand has 340 places, 271 transitions, 1628 flow. Second operand 20 states and 2514 transitions. [2022-01-19 09:21:21,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 382 transitions, 2426 flow [2022-01-19 09:21:21,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 382 transitions, 2202 flow, removed 89 selfloop flow, removed 35 redundant places. [2022-01-19 09:21:21,928 INFO L242 Difference]: Finished difference. Result has 286 places, 317 transitions, 1848 flow [2022-01-19 09:21:21,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1848, PETRI_PLACES=286, PETRI_TRANSITIONS=317} [2022-01-19 09:21:21,929 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 126 predicate places. [2022-01-19 09:21:21,929 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 317 transitions, 1848 flow [2022-01-19 09:21:21,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:21,929 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:21,929 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] [2022-01-19 09:21:21,948 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 09:21:22,143 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,SelfDestructingSolverStorable8 [2022-01-19 09:21:22,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1978318625, now seen corresponding path program 2 times [2022-01-19 09:21:22,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:22,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435022969] [2022-01-19 09:21:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:22,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:22,360 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 09:21:22,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435022969] [2022-01-19 09:21:22,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435022969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108549477] [2022-01-19 09:21:22,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 09:21:22,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:22,362 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 09:21:22,376 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 09:21:22,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 09:21:22,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:22,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-19 09:21:22,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:22,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:22,798 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 09:21:22,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:22,851 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 09:21:22,851 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 19 treesize of output 11 [2022-01-19 09:21:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 09:21:22,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108549477] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:22,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:21:22,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 16 [2022-01-19 09:21:22,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179786928] [2022-01-19 09:21:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:22,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 09:21:22,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 09:21:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:21:22,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 179 [2022-01-19 09:21:22,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 317 transitions, 1848 flow. Second operand has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:22,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:22,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 179 [2022-01-19 09:21:22,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:23,896 INFO L129 PetriNetUnfolder]: 1915/6204 cut-off events. [2022-01-19 09:21:23,896 INFO L130 PetriNetUnfolder]: For 10755/10930 co-relation queries the response was YES. [2022-01-19 09:21:23,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17884 conditions, 6204 events. 1915/6204 cut-off events. For 10755/10930 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 58644 event pairs, 407 based on Foata normal form. 53/6026 useless extension candidates. Maximal degree in co-relation 17819. Up to 1383 conditions per place. [2022-01-19 09:21:23,944 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 138 selfloop transitions, 63 changer transitions 4/395 dead transitions. [2022-01-19 09:21:23,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 395 transitions, 2591 flow [2022-01-19 09:21:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 09:21:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 09:21:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1899 transitions. [2022-01-19 09:21:23,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7072625698324022 [2022-01-19 09:21:23,946 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1899 transitions. [2022-01-19 09:21:23,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1899 transitions. [2022-01-19 09:21:23,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:23,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1899 transitions. [2022-01-19 09:21:23,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.6) internal successors, (1899), 15 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:23,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 179.0) internal successors, (2864), 16 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:23,950 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 179.0) internal successors, (2864), 16 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:23,950 INFO L186 Difference]: Start difference. First operand has 286 places, 317 transitions, 1848 flow. Second operand 15 states and 1899 transitions. [2022-01-19 09:21:23,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 395 transitions, 2591 flow [2022-01-19 09:21:24,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 395 transitions, 2561 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-01-19 09:21:24,048 INFO L242 Difference]: Finished difference. Result has 305 places, 340 transitions, 2171 flow [2022-01-19 09:21:24,049 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2171, PETRI_PLACES=305, PETRI_TRANSITIONS=340} [2022-01-19 09:21:24,050 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 145 predicate places. [2022-01-19 09:21:24,050 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 340 transitions, 2171 flow [2022-01-19 09:21:24,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:24,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:24,050 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] [2022-01-19 09:21:24,091 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 09:21:24,264 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 09:21:24,264 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1358415567, now seen corresponding path program 3 times [2022-01-19 09:21:24,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:24,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825401073] [2022-01-19 09:21:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:24,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:24,491 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 09:21:24,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825401073] [2022-01-19 09:21:24,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825401073] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394324502] [2022-01-19 09:21:24,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 09:21:24,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:24,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:24,504 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 09:21:24,508 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 09:21:24,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 09:21:24,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-19 09:21:24,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:24,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:24,989 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 09:21:24,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:25,084 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 09:21:25,084 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 19 treesize of output 11 [2022-01-19 09:21:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 09:21:25,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394324502] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:25,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:21:25,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 17 [2022-01-19 09:21:25,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526618521] [2022-01-19 09:21:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 09:21:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 09:21:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-01-19 09:21:25,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 179 [2022-01-19 09:21:25,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 340 transitions, 2171 flow. Second operand has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:25,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:25,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 179 [2022-01-19 09:21:25,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:26,316 INFO L129 PetriNetUnfolder]: 2086/6884 cut-off events. [2022-01-19 09:21:26,317 INFO L130 PetriNetUnfolder]: For 14550/14754 co-relation queries the response was YES. [2022-01-19 09:21:26,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21253 conditions, 6884 events. 2086/6884 cut-off events. For 14550/14754 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 67564 event pairs, 335 based on Foata normal form. 45/6685 useless extension candidates. Maximal degree in co-relation 21180. Up to 1297 conditions per place. [2022-01-19 09:21:26,376 INFO L132 encePairwiseOnDemand]: 166/179 looper letters, 156 selfloop transitions, 79 changer transitions 9/434 dead transitions. [2022-01-19 09:21:26,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 434 transitions, 3115 flow [2022-01-19 09:21:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 09:21:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 09:21:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1926 transitions. [2022-01-19 09:21:26,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.71731843575419 [2022-01-19 09:21:26,378 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1926 transitions. [2022-01-19 09:21:26,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1926 transitions. [2022-01-19 09:21:26,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:26,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1926 transitions. [2022-01-19 09:21:26,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 128.4) internal successors, (1926), 15 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:26,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 179.0) internal successors, (2864), 16 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:26,383 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 179.0) internal successors, (2864), 16 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:26,383 INFO L186 Difference]: Start difference. First operand has 305 places, 340 transitions, 2171 flow. Second operand 15 states and 1926 transitions. [2022-01-19 09:21:26,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 434 transitions, 3115 flow [2022-01-19 09:21:26,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 434 transitions, 3071 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-01-19 09:21:26,440 INFO L242 Difference]: Finished difference. Result has 323 places, 359 transitions, 2537 flow [2022-01-19 09:21:26,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2537, PETRI_PLACES=323, PETRI_TRANSITIONS=359} [2022-01-19 09:21:26,440 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 163 predicate places. [2022-01-19 09:21:26,441 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 359 transitions, 2537 flow [2022-01-19 09:21:26,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:26,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:26,441 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] [2022-01-19 09:21:26,473 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 09:21:26,658 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 09:21:26,658 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1788832759, now seen corresponding path program 4 times [2022-01-19 09:21:26,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:26,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78831279] [2022-01-19 09:21:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:26,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:26,927 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 09:21:26,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:26,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78831279] [2022-01-19 09:21:26,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78831279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:26,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884389589] [2022-01-19 09:21:26,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 09:21:26,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:26,929 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 09:21:26,930 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 09:21:26,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 09:21:26,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:27,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-19 09:21:27,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:27,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 09:21:27,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 09:21:27,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 09:21:27,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:27,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:28,060 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:21:28,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-01-19 09:21:28,067 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 09:21:28,067 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 198 treesize of output 173 [2022-01-19 09:21:28,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 09:21:28,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2022-01-19 09:21:28,076 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 09:21:28,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2022-01-19 09:21:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:28,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884389589] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:28,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:28,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15] total 31 [2022-01-19 09:21:28,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417973538] [2022-01-19 09:21:28,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:28,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-19 09:21:28,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-19 09:21:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=674, Unknown=46, NotChecked=0, Total=930 [2022-01-19 09:21:28,232 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 179 [2022-01-19 09:21:28,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 359 transitions, 2537 flow. Second operand has 31 states, 31 states have (on average 101.12903225806451) internal successors, (3135), 31 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:28,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:28,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 179 [2022-01-19 09:21:28,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:29,786 INFO L129 PetriNetUnfolder]: 2143/7136 cut-off events. [2022-01-19 09:21:29,786 INFO L130 PetriNetUnfolder]: For 20644/20860 co-relation queries the response was YES. [2022-01-19 09:21:29,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23603 conditions, 7136 events. 2143/7136 cut-off events. For 20644/20860 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 70749 event pairs, 368 based on Foata normal form. 53/6922 useless extension candidates. Maximal degree in co-relation 23523. Up to 1611 conditions per place. [2022-01-19 09:21:29,843 INFO L132 encePairwiseOnDemand]: 155/179 looper letters, 173 selfloop transitions, 97 changer transitions 4/442 dead transitions. [2022-01-19 09:21:29,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 442 transitions, 3584 flow [2022-01-19 09:21:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 09:21:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 09:21:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2971 transitions. [2022-01-19 09:21:29,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5723367366596032 [2022-01-19 09:21:29,846 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2971 transitions. [2022-01-19 09:21:29,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2971 transitions. [2022-01-19 09:21:29,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:29,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2971 transitions. [2022-01-19 09:21:29,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 102.44827586206897) internal successors, (2971), 29 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:29,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:29,854 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:29,854 INFO L186 Difference]: Start difference. First operand has 323 places, 359 transitions, 2537 flow. Second operand 29 states and 2971 transitions. [2022-01-19 09:21:29,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 442 transitions, 3584 flow [2022-01-19 09:21:30,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 442 transitions, 3420 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-01-19 09:21:30,017 INFO L242 Difference]: Finished difference. Result has 353 places, 380 transitions, 2910 flow [2022-01-19 09:21:30,018 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2910, PETRI_PLACES=353, PETRI_TRANSITIONS=380} [2022-01-19 09:21:30,018 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 193 predicate places. [2022-01-19 09:21:30,019 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 380 transitions, 2910 flow [2022-01-19 09:21:30,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 101.12903225806451) internal successors, (3135), 31 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:30,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:30,019 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] [2022-01-19 09:21:30,059 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 09:21:30,235 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 09:21:30,235 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -813689031, now seen corresponding path program 5 times [2022-01-19 09:21:30,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106132873] [2022-01-19 09:21:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:30,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:30,422 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 09:21:30,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:30,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106132873] [2022-01-19 09:21:30,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106132873] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:30,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870419369] [2022-01-19 09:21:30,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 09:21:30,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:30,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:30,440 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 09:21:30,468 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 09:21:30,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 09:21:30,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:30,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-19 09:21:30,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:30,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 09:21:31,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 09:21:31,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 09:21:31,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:31,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:31,713 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:21:31,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-01-19 09:21:31,719 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 09:21:31,719 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 198 treesize of output 173 [2022-01-19 09:21:31,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 09:21:31,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2022-01-19 09:21:31,727 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 09:21:31,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2022-01-19 09:21:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:21:31,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870419369] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:31,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:31,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15] total 32 [2022-01-19 09:21:31,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756430233] [2022-01-19 09:21:31,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:31,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-19 09:21:31,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-19 09:21:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=720, Unknown=57, NotChecked=0, Total=992 [2022-01-19 09:21:31,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 179 [2022-01-19 09:21:31,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 380 transitions, 2910 flow. Second operand has 32 states, 32 states have (on average 101.0625) internal successors, (3234), 32 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:31,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:31,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 179 [2022-01-19 09:21:31,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:33,638 INFO L129 PetriNetUnfolder]: 2191/7494 cut-off events. [2022-01-19 09:21:33,639 INFO L130 PetriNetUnfolder]: For 25502/25842 co-relation queries the response was YES. [2022-01-19 09:21:33,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25725 conditions, 7494 events. 2191/7494 cut-off events. For 25502/25842 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 75930 event pairs, 444 based on Foata normal form. 90/7296 useless extension candidates. Maximal degree in co-relation 25636. Up to 1946 conditions per place. [2022-01-19 09:21:33,721 INFO L132 encePairwiseOnDemand]: 156/179 looper letters, 190 selfloop transitions, 76 changer transitions 4/438 dead transitions. [2022-01-19 09:21:33,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 438 transitions, 3767 flow [2022-01-19 09:21:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 09:21:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 09:21:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2365 transitions. [2022-01-19 09:21:33,732 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5744474131649259 [2022-01-19 09:21:33,732 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2365 transitions. [2022-01-19 09:21:33,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2365 transitions. [2022-01-19 09:21:33,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:33,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2365 transitions. [2022-01-19 09:21:33,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.82608695652173) internal successors, (2365), 23 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:33,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:33,739 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:33,739 INFO L186 Difference]: Start difference. First operand has 353 places, 380 transitions, 2910 flow. Second operand 23 states and 2365 transitions. [2022-01-19 09:21:33,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 438 transitions, 3767 flow [2022-01-19 09:21:33,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 438 transitions, 3641 flow, removed 52 selfloop flow, removed 12 redundant places. [2022-01-19 09:21:33,873 INFO L242 Difference]: Finished difference. Result has 366 places, 389 transitions, 3068 flow [2022-01-19 09:21:33,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3068, PETRI_PLACES=366, PETRI_TRANSITIONS=389} [2022-01-19 09:21:33,874 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 206 predicate places. [2022-01-19 09:21:33,874 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 389 transitions, 3068 flow [2022-01-19 09:21:33,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 101.0625) internal successors, (3234), 32 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:33,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:33,875 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] [2022-01-19 09:21:33,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-19 09:21:34,093 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 09:21:34,094 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1628726643, now seen corresponding path program 6 times [2022-01-19 09:21:34,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:34,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681246538] [2022-01-19 09:21:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:34,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:34,320 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 09:21:34,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681246538] [2022-01-19 09:21:34,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681246538] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634779251] [2022-01-19 09:21:34,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 09:21:34,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:34,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:34,323 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 09:21:34,329 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 09:21:34,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-19 09:21:34,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:34,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-19 09:21:34,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:34,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:34,887 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 09:21:34,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:34,949 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-01-19 09:21:34,949 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 19 treesize of output 11 [2022-01-19 09:21:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 09:21:35,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634779251] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:35,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:21:35,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 15] total 16 [2022-01-19 09:21:35,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178903334] [2022-01-19 09:21:35,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:21:35,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 09:21:35,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 09:21:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:21:35,094 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 179 [2022-01-19 09:21:35,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 389 transitions, 3068 flow. Second operand has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:35,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:35,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 179 [2022-01-19 09:21:35,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:36,449 INFO L129 PetriNetUnfolder]: 2215/7563 cut-off events. [2022-01-19 09:21:36,450 INFO L130 PetriNetUnfolder]: For 29137/29470 co-relation queries the response was YES. [2022-01-19 09:21:36,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26670 conditions, 7563 events. 2215/7563 cut-off events. For 29137/29470 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 76905 event pairs, 459 based on Foata normal form. 90/7355 useless extension candidates. Maximal degree in co-relation 26577. Up to 1935 conditions per place. [2022-01-19 09:21:36,531 INFO L132 encePairwiseOnDemand]: 167/179 looper letters, 176 selfloop transitions, 73 changer transitions 4/443 dead transitions. [2022-01-19 09:21:36,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 443 transitions, 3848 flow [2022-01-19 09:21:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 09:21:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 09:21:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2250 transitions. [2022-01-19 09:21:36,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6983240223463687 [2022-01-19 09:21:36,534 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2250 transitions. [2022-01-19 09:21:36,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2250 transitions. [2022-01-19 09:21:36,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:36,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2250 transitions. [2022-01-19 09:21:36,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.0) internal successors, (2250), 18 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:36,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 179.0) internal successors, (3401), 19 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:36,539 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 179.0) internal successors, (3401), 19 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:36,539 INFO L186 Difference]: Start difference. First operand has 366 places, 389 transitions, 3068 flow. Second operand 18 states and 2250 transitions. [2022-01-19 09:21:36,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 443 transitions, 3848 flow [2022-01-19 09:21:36,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 443 transitions, 3719 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-01-19 09:21:36,710 INFO L242 Difference]: Finished difference. Result has 369 places, 393 transitions, 3154 flow [2022-01-19 09:21:36,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3154, PETRI_PLACES=369, PETRI_TRANSITIONS=393} [2022-01-19 09:21:36,711 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 209 predicate places. [2022-01-19 09:21:36,711 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 393 transitions, 3154 flow [2022-01-19 09:21:36,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:36,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:36,711 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] [2022-01-19 09:21:36,739 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 09:21:36,927 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 09:21:36,927 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1542285585, now seen corresponding path program 7 times [2022-01-19 09:21:36,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:36,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182200383] [2022-01-19 09:21:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:36,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:37,148 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 09:21:37,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:37,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182200383] [2022-01-19 09:21:37,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182200383] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:37,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694525724] [2022-01-19 09:21:37,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 09:21:37,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:37,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:37,150 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:21:37,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 09:21:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:37,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-19 09:21:37,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:37,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 09:21:37,409 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 09:21:37,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 09:21:37,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 09:21:37,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:37,756 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 09:21:37,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:37,829 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_272 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_272) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)) |c_thread1Thread1of1ForFork1_#t~mem1#1|)) is different from false [2022-01-19 09:21:37,840 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:21:37,842 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 46 treesize of output 38 [2022-01-19 09:21:37,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-19 09:21:38,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 09:21:38,340 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 09:21:38,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694525724] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:38,341 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:38,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 26 [2022-01-19 09:21:38,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735090928] [2022-01-19 09:21:38,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:38,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 09:21:38,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 09:21:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=519, Unknown=1, NotChecked=46, Total=650 [2022-01-19 09:21:38,343 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 179 [2022-01-19 09:21:38,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 393 transitions, 3154 flow. Second operand has 26 states, 26 states have (on average 104.46153846153847) internal successors, (2716), 26 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:38,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:38,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 179 [2022-01-19 09:21:38,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:40,399 INFO L129 PetriNetUnfolder]: 2445/8425 cut-off events. [2022-01-19 09:21:40,399 INFO L130 PetriNetUnfolder]: For 33858/34098 co-relation queries the response was YES. [2022-01-19 09:21:40,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29776 conditions, 8425 events. 2445/8425 cut-off events. For 33858/34098 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 88381 event pairs, 420 based on Foata normal form. 60/8171 useless extension candidates. Maximal degree in co-relation 29682. Up to 1538 conditions per place. [2022-01-19 09:21:40,483 INFO L132 encePairwiseOnDemand]: 158/179 looper letters, 204 selfloop transitions, 137 changer transitions 13/530 dead transitions. [2022-01-19 09:21:40,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 530 transitions, 4858 flow [2022-01-19 09:21:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 09:21:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 09:21:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3329 transitions. [2022-01-19 09:21:40,487 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5999279149396287 [2022-01-19 09:21:40,487 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3329 transitions. [2022-01-19 09:21:40,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3329 transitions. [2022-01-19 09:21:40,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:40,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3329 transitions. [2022-01-19 09:21:40,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 107.38709677419355) internal successors, (3329), 31 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:40,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 179.0) internal successors, (5728), 32 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:40,495 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 179.0) internal successors, (5728), 32 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:40,495 INFO L186 Difference]: Start difference. First operand has 369 places, 393 transitions, 3154 flow. Second operand 31 states and 3329 transitions. [2022-01-19 09:21:40,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 530 transitions, 4858 flow [2022-01-19 09:21:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 530 transitions, 4629 flow, removed 35 selfloop flow, removed 14 redundant places. [2022-01-19 09:21:40,614 INFO L242 Difference]: Finished difference. Result has 395 places, 434 transitions, 3901 flow [2022-01-19 09:21:40,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3901, PETRI_PLACES=395, PETRI_TRANSITIONS=434} [2022-01-19 09:21:40,615 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 235 predicate places. [2022-01-19 09:21:40,615 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 434 transitions, 3901 flow [2022-01-19 09:21:40,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.46153846153847) internal successors, (2716), 26 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:40,616 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:40,616 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] [2022-01-19 09:21:40,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 09:21:40,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 09:21:40,832 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:40,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash 623556553, now seen corresponding path program 8 times [2022-01-19 09:21:40,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:40,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903472469] [2022-01-19 09:21:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:40,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:41,040 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 09:21:41,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:41,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903472469] [2022-01-19 09:21:41,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903472469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:41,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532475335] [2022-01-19 09:21:41,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 09:21:41,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:41,041 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:21:41,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 09:21:41,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 09:21:41,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:41,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-19 09:21:41,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:41,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 09:21:41,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-19 09:21:41,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:41,671 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 09:21:41,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:41,725 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_297 (Array Int Int))) (= c_~x1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_297) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)))) is different from false [2022-01-19 09:21:41,735 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_297 (Array Int Int))) (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_297) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)))) is different from false [2022-01-19 09:21:41,764 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:21:41,764 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 46 treesize of output 38 [2022-01-19 09:21:41,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-19 09:21:42,106 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 09:21:42,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532475335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:42,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:42,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 34 [2022-01-19 09:21:42,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497540027] [2022-01-19 09:21:42,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:42,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 09:21:42,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 09:21:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=870, Unknown=2, NotChecked=122, Total=1122 [2022-01-19 09:21:42,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 179 [2022-01-19 09:21:42,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 434 transitions, 3901 flow. Second operand has 34 states, 34 states have (on average 103.52941176470588) internal successors, (3520), 34 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:42,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:42,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 179 [2022-01-19 09:21:42,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:44,214 INFO L129 PetriNetUnfolder]: 2875/9952 cut-off events. [2022-01-19 09:21:44,215 INFO L130 PetriNetUnfolder]: For 60957/61318 co-relation queries the response was YES. [2022-01-19 09:21:44,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38004 conditions, 9952 events. 2875/9952 cut-off events. For 60957/61318 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 108647 event pairs, 496 based on Foata normal form. 71/9622 useless extension candidates. Maximal degree in co-relation 37900. Up to 2035 conditions per place. [2022-01-19 09:21:44,310 INFO L132 encePairwiseOnDemand]: 152/179 looper letters, 220 selfloop transitions, 167 changer transitions 6/568 dead transitions. [2022-01-19 09:21:44,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 568 transitions, 6159 flow [2022-01-19 09:21:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 09:21:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 09:21:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2466 transitions. [2022-01-19 09:21:44,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.598979839689094 [2022-01-19 09:21:44,313 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2466 transitions. [2022-01-19 09:21:44,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2466 transitions. [2022-01-19 09:21:44,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:44,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2466 transitions. [2022-01-19 09:21:44,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 107.21739130434783) internal successors, (2466), 23 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:44,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:44,319 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:44,320 INFO L186 Difference]: Start difference. First operand has 395 places, 434 transitions, 3901 flow. Second operand 23 states and 2466 transitions. [2022-01-19 09:21:44,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 568 transitions, 6159 flow [2022-01-19 09:21:44,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 568 transitions, 5374 flow, removed 340 selfloop flow, removed 15 redundant places. [2022-01-19 09:21:44,541 INFO L242 Difference]: Finished difference. Result has 408 places, 504 transitions, 4784 flow [2022-01-19 09:21:44,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4784, PETRI_PLACES=408, PETRI_TRANSITIONS=504} [2022-01-19 09:21:44,541 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 248 predicate places. [2022-01-19 09:21:44,541 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 504 transitions, 4784 flow [2022-01-19 09:21:44,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 103.52941176470588) internal successors, (3520), 34 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:44,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:44,542 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] [2022-01-19 09:21:44,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 09:21:44,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 09:21:44,755 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1803001111, now seen corresponding path program 9 times [2022-01-19 09:21:44,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:44,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263985133] [2022-01-19 09:21:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:44,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:44,944 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 09:21:44,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:44,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263985133] [2022-01-19 09:21:44,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263985133] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:44,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796177000] [2022-01-19 09:21:44,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 09:21:44,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:44,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:44,945 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:21:44,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 09:21:45,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 09:21:45,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:45,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-19 09:21:45,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:45,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 09:21:45,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-19 09:21:45,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-19 09:21:45,722 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 09:21:45,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:45,803 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_322) c_~f~0.base) (+ (* c_~x2~0 4) c_~f~0.offset)))) is different from false [2022-01-19 09:21:45,820 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:21:45,820 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 46 treesize of output 38 [2022-01-19 09:21:45,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-19 09:21:46,135 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 09:21:46,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796177000] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:46,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:46,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 32 [2022-01-19 09:21:46,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272673293] [2022-01-19 09:21:46,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:46,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-19 09:21:46,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-19 09:21:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=810, Unknown=1, NotChecked=58, Total=992 [2022-01-19 09:21:46,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 179 [2022-01-19 09:21:46,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 504 transitions, 4784 flow. Second operand has 32 states, 32 states have (on average 103.625) internal successors, (3316), 32 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:46,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:46,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 179 [2022-01-19 09:21:46,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:48,556 INFO L129 PetriNetUnfolder]: 2926/10345 cut-off events. [2022-01-19 09:21:48,556 INFO L130 PetriNetUnfolder]: For 76961/77630 co-relation queries the response was YES. [2022-01-19 09:21:48,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44506 conditions, 10345 events. 2926/10345 cut-off events. For 76961/77630 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 114774 event pairs, 675 based on Foata normal form. 85/9980 useless extension candidates. Maximal degree in co-relation 44395. Up to 2990 conditions per place. [2022-01-19 09:21:48,656 INFO L132 encePairwiseOnDemand]: 154/179 looper letters, 298 selfloop transitions, 124 changer transitions 4/601 dead transitions. [2022-01-19 09:21:48,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 601 transitions, 6648 flow [2022-01-19 09:21:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 09:21:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 09:21:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2451 transitions. [2022-01-19 09:21:48,658 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5953364100072869 [2022-01-19 09:21:48,658 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2451 transitions. [2022-01-19 09:21:48,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2451 transitions. [2022-01-19 09:21:48,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:48,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2451 transitions. [2022-01-19 09:21:48,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 106.56521739130434) internal successors, (2451), 23 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 09:21:48,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:48,663 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:48,663 INFO L186 Difference]: Start difference. First operand has 408 places, 504 transitions, 4784 flow. Second operand 23 states and 2451 transitions. [2022-01-19 09:21:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 601 transitions, 6648 flow [2022-01-19 09:21:48,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 601 transitions, 6393 flow, removed 84 selfloop flow, removed 12 redundant places. [2022-01-19 09:21:48,899 INFO L242 Difference]: Finished difference. Result has 425 places, 543 transitions, 5470 flow [2022-01-19 09:21:48,899 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4544, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5470, PETRI_PLACES=425, PETRI_TRANSITIONS=543} [2022-01-19 09:21:48,899 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 265 predicate places. [2022-01-19 09:21:48,899 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 543 transitions, 5470 flow [2022-01-19 09:21:48,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 103.625) internal successors, (3316), 32 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:48,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:48,900 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:48,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 09:21:49,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-19 09:21:49,115 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash 598545018, now seen corresponding path program 2 times [2022-01-19 09:21:49,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:49,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628606593] [2022-01-19 09:21:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:49,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:21:49,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:49,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628606593] [2022-01-19 09:21:49,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628606593] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:49,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004352442] [2022-01-19 09:21:49,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 09:21:49,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:49,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:49,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:21:49,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 09:21:49,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 09:21:49,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:49,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:21:49,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:21:49,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:21:49,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004352442] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:49,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:49,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 18 [2022-01-19 09:21:49,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948604107] [2022-01-19 09:21:49,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:49,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 09:21:49,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 09:21:49,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-01-19 09:21:49,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:21:49,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 543 transitions, 5470 flow. Second operand has 18 states, 18 states have (on average 144.83333333333334) internal successors, (2607), 18 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:49,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:49,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:21:49,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:21:52,375 INFO L129 PetriNetUnfolder]: 2298/8925 cut-off events. [2022-01-19 09:21:52,375 INFO L130 PetriNetUnfolder]: For 46817/47176 co-relation queries the response was YES. [2022-01-19 09:21:52,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34710 conditions, 8925 events. 2298/8925 cut-off events. For 46817/47176 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 97791 event pairs, 748 based on Foata normal form. 101/8396 useless extension candidates. Maximal degree in co-relation 34591. Up to 1000 conditions per place. [2022-01-19 09:21:52,475 INFO L132 encePairwiseOnDemand]: 166/179 looper letters, 129 selfloop transitions, 62 changer transitions 1/652 dead transitions. [2022-01-19 09:21:52,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 652 transitions, 6659 flow [2022-01-19 09:21:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 09:21:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 09:21:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3258 transitions. [2022-01-19 09:21:52,478 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8273235144743525 [2022-01-19 09:21:52,478 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3258 transitions. [2022-01-19 09:21:52,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3258 transitions. [2022-01-19 09:21:52,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:21:52,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3258 transitions. [2022-01-19 09:21:52,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 148.0909090909091) internal successors, (3258), 22 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:52,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 179.0) internal successors, (4117), 23 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:52,483 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 179.0) internal successors, (4117), 23 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:52,483 INFO L186 Difference]: Start difference. First operand has 425 places, 543 transitions, 5470 flow. Second operand 22 states and 3258 transitions. [2022-01-19 09:21:52,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 652 transitions, 6659 flow [2022-01-19 09:21:52,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 652 transitions, 6461 flow, removed 77 selfloop flow, removed 12 redundant places. [2022-01-19 09:21:52,693 INFO L242 Difference]: Finished difference. Result has 440 places, 576 transitions, 5809 flow [2022-01-19 09:21:52,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5809, PETRI_PLACES=440, PETRI_TRANSITIONS=576} [2022-01-19 09:21:52,693 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 280 predicate places. [2022-01-19 09:21:52,693 INFO L470 AbstractCegarLoop]: Abstraction has has 440 places, 576 transitions, 5809 flow [2022-01-19 09:21:52,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 144.83333333333334) internal successors, (2607), 18 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:52,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:21:52,694 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:52,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 09:21:52,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 09:21:52,906 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:21:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:21:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1795487122, now seen corresponding path program 3 times [2022-01-19 09:21:52,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:21:52,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648462804] [2022-01-19 09:21:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:21:52,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:21:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:21:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:21:53,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:21:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648462804] [2022-01-19 09:21:53,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648462804] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:21:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324562338] [2022-01-19 09:21:53,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 09:21:53,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:21:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:21:53,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:21:53,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 09:21:53,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 09:21:53,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:21:53,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:21:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:21:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:21:53,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:21:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:21:53,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324562338] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:21:53,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:21:53,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-19 09:21:53,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249820041] [2022-01-19 09:21:53,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:21:53,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 09:21:53,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:21:53,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 09:21:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-19 09:21:53,812 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:21:53,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 576 transitions, 5809 flow. Second operand has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:21:53,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:21:53,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:21:53,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:22:00,678 INFO L129 PetriNetUnfolder]: 4294/17295 cut-off events. [2022-01-19 09:22:00,678 INFO L130 PetriNetUnfolder]: For 103260/103886 co-relation queries the response was YES. [2022-01-19 09:22:00,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70431 conditions, 17295 events. 4294/17295 cut-off events. For 103260/103886 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 214447 event pairs, 1176 based on Foata normal form. 154/16239 useless extension candidates. Maximal degree in co-relation 70306. Up to 1781 conditions per place. [2022-01-19 09:22:00,942 INFO L132 encePairwiseOnDemand]: 164/179 looper letters, 228 selfloop transitions, 273 changer transitions 0/961 dead transitions. [2022-01-19 09:22:00,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 961 transitions, 9919 flow [2022-01-19 09:22:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-19 09:22:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-01-19 09:22:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 10366 transitions. [2022-01-19 09:22:00,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8272944932162809 [2022-01-19 09:22:00,949 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 10366 transitions. [2022-01-19 09:22:00,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 10366 transitions. [2022-01-19 09:22:00,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:22:00,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 10366 transitions. [2022-01-19 09:22:00,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 148.0857142857143) internal successors, (10366), 70 states have internal predecessors, (10366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:00,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 179.0) internal successors, (12709), 71 states have internal predecessors, (12709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:00,965 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 179.0) internal successors, (12709), 71 states have internal predecessors, (12709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:00,965 INFO L186 Difference]: Start difference. First operand has 440 places, 576 transitions, 5809 flow. Second operand 70 states and 10366 transitions. [2022-01-19 09:22:00,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 961 transitions, 9919 flow [2022-01-19 09:22:01,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 961 transitions, 9617 flow, removed 124 selfloop flow, removed 2 redundant places. [2022-01-19 09:22:01,631 INFO L242 Difference]: Finished difference. Result has 533 places, 806 transitions, 8672 flow [2022-01-19 09:22:01,631 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=5683, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=8672, PETRI_PLACES=533, PETRI_TRANSITIONS=806} [2022-01-19 09:22:01,631 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 373 predicate places. [2022-01-19 09:22:01,631 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 806 transitions, 8672 flow [2022-01-19 09:22:01,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:01,632 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:22:01,632 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:01,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 09:22:01,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:01,839 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:22:01,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:22:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash -474649438, now seen corresponding path program 4 times [2022-01-19 09:22:01,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:22:01,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034603402] [2022-01-19 09:22:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:22:01,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:22:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:22:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:01,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:22:01,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034603402] [2022-01-19 09:22:01,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034603402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:22:01,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487149768] [2022-01-19 09:22:01,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 09:22:01,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:01,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:22:01,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:22:01,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 09:22:02,243 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 09:22:02,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:22:02,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:22:02,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:22:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:02,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:22:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:02,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487149768] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:22:02,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:22:02,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-19 09:22:02,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646117387] [2022-01-19 09:22:02,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:22:02,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-19 09:22:02,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:22:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-19 09:22:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-01-19 09:22:02,914 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:22:02,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 806 transitions, 8672 flow. Second operand has 25 states, 25 states have (on average 144.64) internal successors, (3616), 25 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:02,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:22:02,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:22:02,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:22:09,252 INFO L129 PetriNetUnfolder]: 5445/22340 cut-off events. [2022-01-19 09:22:09,252 INFO L130 PetriNetUnfolder]: For 165661/166449 co-relation queries the response was YES. [2022-01-19 09:22:09,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97059 conditions, 22340 events. 5445/22340 cut-off events. For 165661/166449 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 291372 event pairs, 1614 based on Foata normal form. 203/21006 useless extension candidates. Maximal degree in co-relation 96910. Up to 2237 conditions per place. [2022-01-19 09:22:09,564 INFO L132 encePairwiseOnDemand]: 163/179 looper letters, 271 selfloop transitions, 390 changer transitions 0/1121 dead transitions. [2022-01-19 09:22:09,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 1121 transitions, 13713 flow [2022-01-19 09:22:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-19 09:22:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-01-19 09:22:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 5835 transitions. [2022-01-19 09:22:09,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8358401375161152 [2022-01-19 09:22:09,568 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 5835 transitions. [2022-01-19 09:22:09,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 5835 transitions. [2022-01-19 09:22:09,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:22:09,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 5835 transitions. [2022-01-19 09:22:09,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 149.6153846153846) internal successors, (5835), 39 states have internal predecessors, (5835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:09,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 179.0) internal successors, (7160), 40 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:09,577 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 179.0) internal successors, (7160), 40 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:09,577 INFO L186 Difference]: Start difference. First operand has 533 places, 806 transitions, 8672 flow. Second operand 39 states and 5835 transitions. [2022-01-19 09:22:09,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 1121 transitions, 13713 flow [2022-01-19 09:22:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 1121 transitions, 12611 flow, removed 539 selfloop flow, removed 1 redundant places. [2022-01-19 09:22:10,726 INFO L242 Difference]: Finished difference. Result has 589 places, 965 transitions, 11159 flow [2022-01-19 09:22:10,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=8087, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11159, PETRI_PLACES=589, PETRI_TRANSITIONS=965} [2022-01-19 09:22:10,727 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 429 predicate places. [2022-01-19 09:22:10,727 INFO L470 AbstractCegarLoop]: Abstraction has has 589 places, 965 transitions, 11159 flow [2022-01-19 09:22:10,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 144.64) internal successors, (3616), 25 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:10,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:22:10,728 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:10,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-19 09:22:10,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-19 09:22:10,943 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:22:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:22:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash 907635282, now seen corresponding path program 5 times [2022-01-19 09:22:10,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:22:10,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316913855] [2022-01-19 09:22:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:22:10,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:22:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:22:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:11,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:22:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316913855] [2022-01-19 09:22:11,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316913855] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:22:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884998440] [2022-01-19 09:22:11,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 09:22:11,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:11,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:22:11,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:22:11,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-19 09:22:11,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-19 09:22:11,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:22:11,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:22:11,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:22:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:11,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:22:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:12,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884998440] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:22:12,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:22:12,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-01-19 09:22:12,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648990606] [2022-01-19 09:22:12,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:22:12,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-19 09:22:12,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:22:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-19 09:22:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-19 09:22:12,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:22:12,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 965 transitions, 11159 flow. Second operand has 20 states, 20 states have (on average 144.75) internal successors, (2895), 20 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:12,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:22:12,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:22:12,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:22:21,344 INFO L129 PetriNetUnfolder]: 5627/23379 cut-off events. [2022-01-19 09:22:21,344 INFO L130 PetriNetUnfolder]: For 191200/192062 co-relation queries the response was YES. [2022-01-19 09:22:21,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104484 conditions, 23379 events. 5627/23379 cut-off events. For 191200/192062 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 305979 event pairs, 1577 based on Foata normal form. 240/22088 useless extension candidates. Maximal degree in co-relation 104317. Up to 2290 conditions per place. [2022-01-19 09:22:21,865 INFO L132 encePairwiseOnDemand]: 164/179 looper letters, 243 selfloop transitions, 461 changer transitions 0/1164 dead transitions. [2022-01-19 09:22:21,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 1164 transitions, 14708 flow [2022-01-19 09:22:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-19 09:22:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-01-19 09:22:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 10075 transitions. [2022-01-19 09:22:21,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8277193558987841 [2022-01-19 09:22:21,888 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 10075 transitions. [2022-01-19 09:22:21,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 10075 transitions. [2022-01-19 09:22:21,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:22:21,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 10075 transitions. [2022-01-19 09:22:21,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 148.16176470588235) internal successors, (10075), 68 states have internal predecessors, (10075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:21,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 179.0) internal successors, (12351), 69 states have internal predecessors, (12351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:21,910 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 179.0) internal successors, (12351), 69 states have internal predecessors, (12351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:21,910 INFO L186 Difference]: Start difference. First operand has 589 places, 965 transitions, 11159 flow. Second operand 68 states and 10075 transitions. [2022-01-19 09:22:21,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 1164 transitions, 14708 flow [2022-01-19 09:22:23,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 1164 transitions, 14284 flow, removed 180 selfloop flow, removed 4 redundant places. [2022-01-19 09:22:23,481 INFO L242 Difference]: Finished difference. Result has 662 places, 1018 transitions, 12891 flow [2022-01-19 09:22:23,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=10839, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=414, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=12891, PETRI_PLACES=662, PETRI_TRANSITIONS=1018} [2022-01-19 09:22:23,482 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 502 predicate places. [2022-01-19 09:22:23,482 INFO L470 AbstractCegarLoop]: Abstraction has has 662 places, 1018 transitions, 12891 flow [2022-01-19 09:22:23,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 144.75) internal successors, (2895), 20 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:23,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:22:23,482 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:23,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-19 09:22:23,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:23,696 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:22:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:22:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash -214701792, now seen corresponding path program 6 times [2022-01-19 09:22:23,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:22:23,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738943385] [2022-01-19 09:22:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:22:23,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:22:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:22:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:23,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:22:23,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738943385] [2022-01-19 09:22:23,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738943385] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:22:23,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618190149] [2022-01-19 09:22:23,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 09:22:23,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:22:23,827 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:22:23,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-19 09:22:23,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-19 09:22:23,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:22:23,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:22:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:22:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:24,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:22:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:24,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618190149] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:22:24,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:22:24,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-19 09:22:24,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608781402] [2022-01-19 09:22:24,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:22:24,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 09:22:24,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:22:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 09:22:24,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-01-19 09:22:24,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:22:24,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 1018 transitions, 12891 flow. Second operand has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:24,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:22:24,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:22:24,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:22:32,807 INFO L129 PetriNetUnfolder]: 5744/23621 cut-off events. [2022-01-19 09:22:32,807 INFO L130 PetriNetUnfolder]: For 207998/208930 co-relation queries the response was YES. [2022-01-19 09:22:33,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109362 conditions, 23621 events. 5744/23621 cut-off events. For 207998/208930 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 309277 event pairs, 1661 based on Foata normal form. 238/22244 useless extension candidates. Maximal degree in co-relation 109184. Up to 2323 conditions per place. [2022-01-19 09:22:33,436 INFO L132 encePairwiseOnDemand]: 164/179 looper letters, 291 selfloop transitions, 401 changer transitions 0/1152 dead transitions. [2022-01-19 09:22:33,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 1152 transitions, 15679 flow [2022-01-19 09:22:33,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-19 09:22:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-01-19 09:22:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6953 transitions. [2022-01-19 09:22:33,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8264590514679663 [2022-01-19 09:22:33,440 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 6953 transitions. [2022-01-19 09:22:33,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 6953 transitions. [2022-01-19 09:22:33,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:22:33,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 6953 transitions. [2022-01-19 09:22:33,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 147.93617021276594) internal successors, (6953), 47 states have internal predecessors, (6953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:33,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 179.0) internal successors, (8592), 48 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:33,449 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 179.0) internal successors, (8592), 48 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:33,449 INFO L186 Difference]: Start difference. First operand has 662 places, 1018 transitions, 12891 flow. Second operand 47 states and 6953 transitions. [2022-01-19 09:22:33,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 1152 transitions, 15679 flow [2022-01-19 09:22:34,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 1152 transitions, 14951 flow, removed 157 selfloop flow, removed 43 redundant places. [2022-01-19 09:22:34,899 INFO L242 Difference]: Finished difference. Result has 674 places, 1055 transitions, 13877 flow [2022-01-19 09:22:34,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=12255, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1018, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=13877, PETRI_PLACES=674, PETRI_TRANSITIONS=1055} [2022-01-19 09:22:34,900 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 514 predicate places. [2022-01-19 09:22:34,900 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 1055 transitions, 13877 flow [2022-01-19 09:22:34,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:34,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:22:34,901 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:34,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-19 09:22:35,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:35,116 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:22:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:22:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2066056026, now seen corresponding path program 7 times [2022-01-19 09:22:35,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:22:35,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335492467] [2022-01-19 09:22:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:22:35,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:22:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:22:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:35,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:22:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335492467] [2022-01-19 09:22:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335492467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:22:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628895254] [2022-01-19 09:22:35,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 09:22:35,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:35,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:22:35,226 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:22:35,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-19 09:22:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:22:35,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:22:35,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:22:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:35,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:22:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:36,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628895254] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:22:36,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:22:36,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-19 09:22:36,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424371327] [2022-01-19 09:22:36,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:22:36,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 09:22:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:22:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 09:22:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-01-19 09:22:36,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:22:36,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 1055 transitions, 13877 flow. Second operand has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:36,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:22:36,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:22:36,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:22:48,791 INFO L129 PetriNetUnfolder]: 7599/31545 cut-off events. [2022-01-19 09:22:48,791 INFO L130 PetriNetUnfolder]: For 298966/300149 co-relation queries the response was YES. [2022-01-19 09:22:49,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149461 conditions, 31545 events. 7599/31545 cut-off events. For 298966/300149 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 416898 event pairs, 1890 based on Foata normal form. 290/29946 useless extension candidates. Maximal degree in co-relation 149274. Up to 2914 conditions per place. [2022-01-19 09:22:49,402 INFO L132 encePairwiseOnDemand]: 163/179 looper letters, 503 selfloop transitions, 732 changer transitions 0/1695 dead transitions. [2022-01-19 09:22:49,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 1695 transitions, 25429 flow [2022-01-19 09:22:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-19 09:22:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-01-19 09:22:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 9976 transitions. [2022-01-19 09:22:49,407 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8318185608271492 [2022-01-19 09:22:49,407 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 9976 transitions. [2022-01-19 09:22:49,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 9976 transitions. [2022-01-19 09:22:49,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:22:49,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 9976 transitions. [2022-01-19 09:22:49,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 148.8955223880597) internal successors, (9976), 67 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:49,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 179.0) internal successors, (12172), 68 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:49,419 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 179.0) internal successors, (12172), 68 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:49,419 INFO L186 Difference]: Start difference. First operand has 674 places, 1055 transitions, 13877 flow. Second operand 67 states and 9976 transitions. [2022-01-19 09:22:49,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 1695 transitions, 25429 flow [2022-01-19 09:22:51,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 1695 transitions, 25018 flow, removed 79 selfloop flow, removed 21 redundant places. [2022-01-19 09:22:51,974 INFO L242 Difference]: Finished difference. Result has 746 places, 1387 transitions, 21172 flow [2022-01-19 09:22:51,975 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=13568, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=21172, PETRI_PLACES=746, PETRI_TRANSITIONS=1387} [2022-01-19 09:22:51,975 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 586 predicate places. [2022-01-19 09:22:51,975 INFO L470 AbstractCegarLoop]: Abstraction has has 746 places, 1387 transitions, 21172 flow [2022-01-19 09:22:51,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:51,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:22:51,975 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:51,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-19 09:22:52,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-19 09:22:52,191 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:22:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:22:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1855981786, now seen corresponding path program 8 times [2022-01-19 09:22:52,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:22:52,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993522750] [2022-01-19 09:22:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:22:52,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:22:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:22:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:52,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:22:52,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993522750] [2022-01-19 09:22:52,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993522750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:22:52,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557535863] [2022-01-19 09:22:52,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 09:22:52,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:22:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:22:52,320 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:22:52,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-19 09:22:52,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 09:22:52,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:22:52,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:22:52,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:22:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:52,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:22:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:22:53,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557535863] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:22:53,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:22:53,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-19 09:22:53,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487540371] [2022-01-19 09:22:53,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:22:53,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 09:22:53,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:22:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 09:22:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-01-19 09:22:53,008 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:22:53,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 1387 transitions, 21172 flow. Second operand has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:22:53,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:22:53,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:22:53,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:23:06,037 INFO L129 PetriNetUnfolder]: 8103/33187 cut-off events. [2022-01-19 09:23:06,037 INFO L130 PetriNetUnfolder]: For 370311/371897 co-relation queries the response was YES. [2022-01-19 09:23:06,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165965 conditions, 33187 events. 8103/33187 cut-off events. For 370311/371897 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 442085 event pairs, 2190 based on Foata normal form. 415/31542 useless extension candidates. Maximal degree in co-relation 165752. Up to 3064 conditions per place. [2022-01-19 09:23:07,207 INFO L132 encePairwiseOnDemand]: 163/179 looper letters, 444 selfloop transitions, 698 changer transitions 0/1602 dead transitions. [2022-01-19 09:23:07,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 1602 transitions, 26402 flow [2022-01-19 09:23:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-19 09:23:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-01-19 09:23:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6983 transitions. [2022-01-19 09:23:07,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8300249613693094 [2022-01-19 09:23:07,211 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 6983 transitions. [2022-01-19 09:23:07,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 6983 transitions. [2022-01-19 09:23:07,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:23:07,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 6983 transitions. [2022-01-19 09:23:07,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 148.5744680851064) internal successors, (6983), 47 states have internal predecessors, (6983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:07,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 179.0) internal successors, (8592), 48 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:07,227 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 179.0) internal successors, (8592), 48 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:07,227 INFO L186 Difference]: Start difference. First operand has 746 places, 1387 transitions, 21172 flow. Second operand 47 states and 6983 transitions. [2022-01-19 09:23:07,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 1602 transitions, 26402 flow [2022-01-19 09:23:10,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 790 places, 1602 transitions, 25307 flow, removed 531 selfloop flow, removed 2 redundant places. [2022-01-19 09:23:10,904 INFO L242 Difference]: Finished difference. Result has 805 places, 1461 transitions, 23464 flow [2022-01-19 09:23:10,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=20225, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=23464, PETRI_PLACES=805, PETRI_TRANSITIONS=1461} [2022-01-19 09:23:10,905 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 645 predicate places. [2022-01-19 09:23:10,905 INFO L470 AbstractCegarLoop]: Abstraction has has 805 places, 1461 transitions, 23464 flow [2022-01-19 09:23:10,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 144.73684210526315) internal successors, (2750), 19 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:10,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:23:10,906 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:10,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-19 09:23:11,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:23:11,121 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:23:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:23:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1065363694, now seen corresponding path program 9 times [2022-01-19 09:23:11,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:23:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337206871] [2022-01-19 09:23:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:23:11,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:23:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:23:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:23:11,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:23:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337206871] [2022-01-19 09:23:11,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337206871] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:23:11,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485367501] [2022-01-19 09:23:11,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 09:23:11,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:23:11,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:23:11,248 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:23:11,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-19 09:23:11,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 09:23:11,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:23:11,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:23:11,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:23:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:23:11,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:23:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:23:12,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485367501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:23:12,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:23:12,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-19 09:23:12,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522067553] [2022-01-19 09:23:12,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:23:12,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 09:23:12,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:23:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 09:23:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-01-19 09:23:12,002 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:23:12,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 1461 transitions, 23464 flow. Second operand has 19 states, 19 states have (on average 144.78947368421052) internal successors, (2751), 19 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:12,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:23:12,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:23:12,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:23:28,524 INFO L129 PetriNetUnfolder]: 8831/35679 cut-off events. [2022-01-19 09:23:28,524 INFO L130 PetriNetUnfolder]: For 417237/418905 co-relation queries the response was YES. [2022-01-19 09:23:29,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181274 conditions, 35679 events. 8831/35679 cut-off events. For 417237/418905 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 480994 event pairs, 2290 based on Foata normal form. 433/33824 useless extension candidates. Maximal degree in co-relation 181048. Up to 3332 conditions per place. [2022-01-19 09:23:29,583 INFO L132 encePairwiseOnDemand]: 163/179 looper letters, 444 selfloop transitions, 882 changer transitions 0/1786 dead transitions. [2022-01-19 09:23:29,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 1786 transitions, 30785 flow [2022-01-19 09:23:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-19 09:23:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-01-19 09:23:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 10974 transitions. [2022-01-19 09:23:29,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8284765212139514 [2022-01-19 09:23:29,588 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 10974 transitions. [2022-01-19 09:23:29,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 10974 transitions. [2022-01-19 09:23:29,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:23:29,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 10974 transitions. [2022-01-19 09:23:29,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 148.2972972972973) internal successors, (10974), 74 states have internal predecessors, (10974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:29,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 179.0) internal successors, (13425), 75 states have internal predecessors, (13425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:29,600 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 179.0) internal successors, (13425), 75 states have internal predecessors, (13425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:29,600 INFO L186 Difference]: Start difference. First operand has 805 places, 1461 transitions, 23464 flow. Second operand 74 states and 10974 transitions. [2022-01-19 09:23:29,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 1786 transitions, 30785 flow [2022-01-19 09:23:34,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 1786 transitions, 30090 flow, removed 245 selfloop flow, removed 5 redundant places. [2022-01-19 09:23:34,024 INFO L242 Difference]: Finished difference. Result has 887 places, 1590 transitions, 27677 flow [2022-01-19 09:23:34,025 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=22927, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=763, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=27677, PETRI_PLACES=887, PETRI_TRANSITIONS=1590} [2022-01-19 09:23:34,025 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 727 predicate places. [2022-01-19 09:23:34,025 INFO L470 AbstractCegarLoop]: Abstraction has has 887 places, 1590 transitions, 27677 flow [2022-01-19 09:23:34,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 144.78947368421052) internal successors, (2751), 19 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:34,026 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:23:34,026 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:34,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-19 09:23:34,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:23:34,241 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:23:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:23:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1051776870, now seen corresponding path program 10 times [2022-01-19 09:23:34,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:23:34,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39957312] [2022-01-19 09:23:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:23:34,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:23:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:23:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:23:34,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:23:34,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39957312] [2022-01-19 09:23:34,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39957312] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:23:34,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133058779] [2022-01-19 09:23:34,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 09:23:34,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:23:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:23:34,386 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:23:34,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-19 09:23:34,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 09:23:34,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:23:34,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:23:34,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:23:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:23:34,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:23:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:23:35,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133058779] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:23:35,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:23:35,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-19 09:23:35,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583955260] [2022-01-19 09:23:35,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:23:35,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-19 09:23:35,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:23:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-19 09:23:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-01-19 09:23:35,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:23:35,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 1590 transitions, 27677 flow. Second operand has 21 states, 21 states have (on average 144.71428571428572) internal successors, (3039), 21 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 09:23:35,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:23:35,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:23:35,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:23:52,745 INFO L129 PetriNetUnfolder]: 9415/37502 cut-off events. [2022-01-19 09:23:52,745 INFO L130 PetriNetUnfolder]: For 465721/467492 co-relation queries the response was YES. [2022-01-19 09:23:54,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197935 conditions, 37502 events. 9415/37502 cut-off events. For 465721/467492 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 505646 event pairs, 2396 based on Foata normal form. 458/35507 useless extension candidates. Maximal degree in co-relation 197696. Up to 3467 conditions per place. [2022-01-19 09:23:54,167 INFO L132 encePairwiseOnDemand]: 162/179 looper letters, 529 selfloop transitions, 1057 changer transitions 0/2046 dead transitions. [2022-01-19 09:23:54,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 2046 transitions, 38244 flow [2022-01-19 09:23:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-19 09:23:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2022-01-19 09:23:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 13219 transitions. [2022-01-19 09:23:54,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8297658652940807 [2022-01-19 09:23:54,178 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 13219 transitions. [2022-01-19 09:23:54,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 13219 transitions. [2022-01-19 09:23:54,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:23:54,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 13219 transitions. [2022-01-19 09:23:54,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 148.52808988764045) internal successors, (13219), 89 states have internal predecessors, (13219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:54,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 179.0) internal successors, (16110), 90 states have internal predecessors, (16110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:54,197 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 179.0) internal successors, (16110), 90 states have internal predecessors, (16110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:23:54,197 INFO L186 Difference]: Start difference. First operand has 887 places, 1590 transitions, 27677 flow. Second operand 89 states and 13219 transitions. [2022-01-19 09:23:54,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 2046 transitions, 38244 flow [2022-01-19 09:24:00,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 2046 transitions, 37217 flow, removed 183 selfloop flow, removed 30 redundant places. [2022-01-19 09:24:00,235 INFO L242 Difference]: Finished difference. Result has 969 places, 1749 transitions, 33746 flow [2022-01-19 09:24:00,236 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=26790, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=904, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=33746, PETRI_PLACES=969, PETRI_TRANSITIONS=1749} [2022-01-19 09:24:00,237 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 809 predicate places. [2022-01-19 09:24:00,237 INFO L470 AbstractCegarLoop]: Abstraction has has 969 places, 1749 transitions, 33746 flow [2022-01-19 09:24:00,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 144.71428571428572) internal successors, (3039), 21 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 09:24:00,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:24:00,238 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:24:00,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-19 09:24:00,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:24:00,443 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:24:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:24:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash -291412332, now seen corresponding path program 11 times [2022-01-19 09:24:00,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:24:00,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485276394] [2022-01-19 09:24:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:24:00,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:24:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:24:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:24:00,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:24:00,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485276394] [2022-01-19 09:24:00,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485276394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:24:00,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763413620] [2022-01-19 09:24:00,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 09:24:00,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:24:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:24:00,592 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:24:00,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-19 09:24:00,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-19 09:24:00,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:24:00,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:24:00,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:24:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:24:00,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:24:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:24:01,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763413620] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:24:01,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 09:24:01,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-19 09:24:01,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644979116] [2022-01-19 09:24:01,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 09:24:01,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-19 09:24:01,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:24:01,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-19 09:24:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2022-01-19 09:24:01,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 179 [2022-01-19 09:24:01,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 969 places, 1749 transitions, 33746 flow. Second operand has 25 states, 25 states have (on average 144.64) internal successors, (3616), 25 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:24:01,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:24:01,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 179 [2022-01-19 09:24:01,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:24:20,527 INFO L129 PetriNetUnfolder]: 10606/42122 cut-off events. [2022-01-19 09:24:20,527 INFO L130 PetriNetUnfolder]: For 593382/595351 co-relation queries the response was YES. [2022-01-19 09:24:22,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231444 conditions, 42122 events. 10606/42122 cut-off events. For 593382/595351 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 579378 event pairs, 3065 based on Foata normal form. 485/39817 useless extension candidates. Maximal degree in co-relation 231182. Up to 3780 conditions per place. [2022-01-19 09:24:22,560 INFO L132 encePairwiseOnDemand]: 163/179 looper letters, 545 selfloop transitions, 1185 changer transitions 0/2190 dead transitions. [2022-01-19 09:24:22,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1024 places, 2190 transitions, 45911 flow [2022-01-19 09:24:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 09:24:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 09:24:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8333 transitions. [2022-01-19 09:24:22,569 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8313048683160414 [2022-01-19 09:24:22,569 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8333 transitions. [2022-01-19 09:24:22,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8333 transitions. [2022-01-19 09:24:22,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:24:22,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8333 transitions. [2022-01-19 09:24:22,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 148.80357142857142) internal successors, (8333), 56 states have internal predecessors, (8333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:24:22,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 179.0) internal successors, (10203), 57 states have internal predecessors, (10203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:24:22,579 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 179.0) internal successors, (10203), 57 states have internal predecessors, (10203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:24:22,579 INFO L186 Difference]: Start difference. First operand has 969 places, 1749 transitions, 33746 flow. Second operand 56 states and 8333 transitions. [2022-01-19 09:24:22,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1024 places, 2190 transitions, 45911 flow [2022-01-19 09:24:30,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 994 places, 2190 transitions, 44140 flow, removed 530 selfloop flow, removed 30 redundant places. [2022-01-19 09:24:30,566 INFO L242 Difference]: Finished difference. Result has 1011 places, 1944 transitions, 40455 flow [2022-01-19 09:24:30,567 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=32329, PETRI_DIFFERENCE_MINUEND_PLACES=939, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=993, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=40455, PETRI_PLACES=1011, PETRI_TRANSITIONS=1944} [2022-01-19 09:24:30,568 INFO L334 CegarLoopForPetriNet]: 160 programPoint places, 851 predicate places. [2022-01-19 09:24:30,568 INFO L470 AbstractCegarLoop]: Abstraction has has 1011 places, 1944 transitions, 40455 flow [2022-01-19 09:24:30,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 144.64) internal successors, (3616), 25 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:24:30,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:24:30,568 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:24:30,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-19 09:24:30,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-19 09:24:30,773 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 09:24:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:24:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash 650179082, now seen corresponding path program 12 times [2022-01-19 09:24:30,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:24:30,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897482459] [2022-01-19 09:24:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:24:30,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:24:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:24:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:24:30,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:24:30,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897482459] [2022-01-19 09:24:30,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897482459] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:24:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602807270] [2022-01-19 09:24:30,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 09:24:30,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:24:30,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:24:30,893 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:24:30,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-19 09:24:31,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-19 09:24:31,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:24:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:24:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:24:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 09:24:31,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-19 09:35:16,179 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 09:35:16,180 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 09:35:17,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-01-19 09:35:17,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown