/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:14:05,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:14:05,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:14:05,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:14:05,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:14:05,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:14:05,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:14:05,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:14:05,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:14:05,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:14:05,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:14:05,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:14:05,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:14:05,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:14:05,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:14:05,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:14:05,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:14:05,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:14:05,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:14:05,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:14:05,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:14:05,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:14:05,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:14:05,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:14:05,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:14:05,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:14:05,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:14:05,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:14:05,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:14:05,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:14:05,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:14:05,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:14:05,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:14:05,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:14:05,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:14:05,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:14:05,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:14:05,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:14:05,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:14:05,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:14:05,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:14:05,191 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-VariableLbe.epf [2023-01-28 05:14:05,212 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:14:05,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:14:05,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:14:05,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:14:05,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:14:05,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:14:05,214 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:14:05,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:14:05,214 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:14:05,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:14:05,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:14:05,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:14:05,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:14:05,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:14:05,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:14:05,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:14:05,217 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:14:05,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:14:05,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:14:05,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:14:05,398 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:14:05,398 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:14:05,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-01-28 05:14:06,237 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:14:06,400 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:14:06,401 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-01-28 05:14:06,406 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259ab279b/59274722bfd3476c8b03d05822902ee5/FLAG5a786006d [2023-01-28 05:14:06,420 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/259ab279b/59274722bfd3476c8b03d05822902ee5 [2023-01-28 05:14:06,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:14:06,424 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:14:06,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:14:06,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:14:06,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:14:06,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfcfea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06, skipping insertion in model container [2023-01-28 05:14:06,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:14:06,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:14:06,585 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-01-28 05:14:06,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:14:06,603 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:14:06,629 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-01-28 05:14:06,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:14:06,635 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:14:06,635 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:14:06,639 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:14:06,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06 WrapperNode [2023-01-28 05:14:06,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:14:06,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:14:06,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:14:06,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:14:06,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,669 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2023-01-28 05:14:06,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:14:06,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:14:06,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:14:06,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:14:06,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:14:06,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:14:06,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:14:06,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:14:06,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (1/1) ... [2023-01-28 05:14:06,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:14:06,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:06,718 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) [2023-01-28 05:14:06,729 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 [2023-01-28 05:14:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:14:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:14:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:14:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:14:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:14:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:14:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:14:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 05:14:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 05:14:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:14:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:14:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:14:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:14:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:14:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:14:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:14:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:14:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:14:06,751 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:14:06,859 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:14:06,861 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:14:07,083 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:14:07,136 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:14:07,136 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 05:14:07,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:14:07 BoogieIcfgContainer [2023-01-28 05:14:07,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:14:07,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:14:07,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:14:07,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:14:07,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:14:06" (1/3) ... [2023-01-28 05:14:07,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b624ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:14:07, skipping insertion in model container [2023-01-28 05:14:07,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:14:06" (2/3) ... [2023-01-28 05:14:07,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b624ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:14:07, skipping insertion in model container [2023-01-28 05:14:07,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:14:07" (3/3) ... [2023-01-28 05:14:07,143 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-01-28 05:14:07,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:14:07,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:14:07,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:14:07,215 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 05:14:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 128 transitions, 288 flow [2023-01-28 05:14:07,278 INFO L130 PetriNetUnfolder]: 10/124 cut-off events. [2023-01-28 05:14:07,278 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:14:07,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 10/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-01-28 05:14:07,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 128 transitions, 288 flow [2023-01-28 05:14:07,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 248 flow [2023-01-28 05:14:07,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:14:07,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 248 flow [2023-01-28 05:14:07,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 248 flow [2023-01-28 05:14:07,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2023-01-28 05:14:07,316 INFO L130 PetriNetUnfolder]: 10/112 cut-off events. [2023-01-28 05:14:07,317 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:14:07,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 112 events. 10/112 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-01-28 05:14:07,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2023-01-28 05:14:10,546 INFO L134 LiptonReduction]: Checked pairs total: 1470 [2023-01-28 05:14:10,546 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-01-28 05:14:10,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:14:10,559 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b61fc69, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:14:10,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 05:14:10,563 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2023-01-28 05:14:10,563 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:14:10,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:10,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:10,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:10,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1331677596, now seen corresponding path program 1 times [2023-01-28 05:14:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:10,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452279911] [2023-01-28 05:14:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:10,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:10,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452279911] [2023-01-28 05:14:10,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452279911] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:14:10,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:14:10,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 05:14:10,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400418806] [2023-01-28 05:14:10,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:10,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:14:10,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:10,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:14:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:14:10,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 228 [2023-01-28 05:14:10,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:10,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:10,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 228 [2023-01-28 05:14:10,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:11,072 INFO L130 PetriNetUnfolder]: 431/611 cut-off events. [2023-01-28 05:14:11,072 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 05:14:11,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 611 events. 431/611 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1720 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 928. Up to 405 conditions per place. [2023-01-28 05:14:11,079 INFO L137 encePairwiseOnDemand]: 222/228 looper letters, 39 selfloop transitions, 3 changer transitions 3/45 dead transitions. [2023-01-28 05:14:11,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 225 flow [2023-01-28 05:14:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:14:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:14:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-01-28 05:14:11,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-01-28 05:14:11,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-01-28 05:14:11,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-01-28 05:14:11,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:11,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-01-28 05:14:11,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,108 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 369 transitions. [2023-01-28 05:14:11,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 225 flow [2023-01-28 05:14:11,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 45 transitions, 195 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 05:14:11,113 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 81 flow [2023-01-28 05:14:11,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 05:14:11,118 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-01-28 05:14:11,118 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 81 flow [2023-01-28 05:14:11,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:11,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:11,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:14:11,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:11,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1009097346, now seen corresponding path program 1 times [2023-01-28 05:14:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:11,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546891767] [2023-01-28 05:14:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546891767] [2023-01-28 05:14:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546891767] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:14:11,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:14:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:14:11,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962029627] [2023-01-28 05:14:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:11,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:14:11,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:14:11,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:11,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:14:11,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:11,379 INFO L130 PetriNetUnfolder]: 395/575 cut-off events. [2023-01-28 05:14:11,379 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-01-28 05:14:11,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 575 events. 395/575 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1711 event pairs, 45 based on Foata normal form. 36/611 useless extension candidates. Maximal degree in co-relation 474. Up to 369 conditions per place. [2023-01-28 05:14:11,382 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 33 selfloop transitions, 3 changer transitions 20/56 dead transitions. [2023-01-28 05:14:11,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 261 flow [2023-01-28 05:14:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-01-28 05:14:11,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-01-28 05:14:11,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-01-28 05:14:11,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-01-28 05:14:11,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:11,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-01-28 05:14:11,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,388 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 81 flow. Second operand 4 states and 418 transitions. [2023-01-28 05:14:11,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 261 flow [2023-01-28 05:14:11,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:14:11,390 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow [2023-01-28 05:14:11,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 05:14:11,390 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-01-28 05:14:11,391 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow [2023-01-28 05:14:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:11,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:14:11,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:11,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1082201917, now seen corresponding path program 1 times [2023-01-28 05:14:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256969438] [2023-01-28 05:14:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256969438] [2023-01-28 05:14:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256969438] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208997013] [2023-01-28 05:14:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:11,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:11,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:11,522 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) [2023-01-28 05:14:11,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:14:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:11,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 05:14:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:11,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208997013] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:11,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:14:11,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2023-01-28 05:14:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174118809] [2023-01-28 05:14:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 05:14:11,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 05:14:11,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:11,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 05:14:11,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:11,955 INFO L130 PetriNetUnfolder]: 523/722 cut-off events. [2023-01-28 05:14:11,955 INFO L131 PetriNetUnfolder]: For 284/284 co-relation queries the response was YES. [2023-01-28 05:14:11,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 722 events. 523/722 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2001 event pairs, 67 based on Foata normal form. 36/758 useless extension candidates. Maximal degree in co-relation 664. Up to 355 conditions per place. [2023-01-28 05:14:11,958 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-01-28 05:14:11,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 315 flow [2023-01-28 05:14:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 05:14:11,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2023-01-28 05:14:11,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 05:14:11,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 05:14:11,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:11,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 05:14:11,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,970 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 91 flow. Second operand 4 states and 454 transitions. [2023-01-28 05:14:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 315 flow [2023-01-28 05:14:11,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 305 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 05:14:11,974 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 120 flow [2023-01-28 05:14:11,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-01-28 05:14:11,975 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-28 05:14:11,975 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 120 flow [2023-01-28 05:14:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:11,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:11,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:11,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 05:14:12,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:12,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:12,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1640393862, now seen corresponding path program 2 times [2023-01-28 05:14:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197678521] [2023-01-28 05:14:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:12,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:12,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197678521] [2023-01-28 05:14:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197678521] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:12,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737838436] [2023-01-28 05:14:12,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:14:12,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:12,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:12,287 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) [2023-01-28 05:14:12,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:14:12,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:14:12,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:14:12,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 05:14:12,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:12,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:12,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737838436] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:12,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:14:12,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-01-28 05:14:12,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588402234] [2023-01-28 05:14:12,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:12,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:12,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:12,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:14:12,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 05:14:12,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:12,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:12,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 05:14:12,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:12,578 INFO L130 PetriNetUnfolder]: 683/948 cut-off events. [2023-01-28 05:14:12,579 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-28 05:14:12,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 948 events. 683/948 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2865 event pairs, 99 based on Foata normal form. 24/972 useless extension candidates. Maximal degree in co-relation 1006. Up to 589 conditions per place. [2023-01-28 05:14:12,583 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-01-28 05:14:12,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 337 flow [2023-01-28 05:14:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-01-28 05:14:12,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2023-01-28 05:14:12,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-01-28 05:14:12,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-01-28 05:14:12,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:12,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-01-28 05:14:12,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:12,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:12,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:12,587 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 120 flow. Second operand 4 states and 450 transitions. [2023-01-28 05:14:12,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 337 flow [2023-01-28 05:14:12,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:14:12,589 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 159 flow [2023-01-28 05:14:12,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-01-28 05:14:12,590 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-01-28 05:14:12,590 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 159 flow [2023-01-28 05:14:12,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:12,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:12,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:12,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:14:12,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 05:14:12,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:12,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -144285389, now seen corresponding path program 1 times [2023-01-28 05:14:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739113124] [2023-01-28 05:14:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:12,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739113124] [2023-01-28 05:14:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739113124] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:12,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568789885] [2023-01-28 05:14:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:12,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:12,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:12,953 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) [2023-01-28 05:14:12,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:14:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:13,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 05:14:13,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:13,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568789885] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:13,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:14:13,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2023-01-28 05:14:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877101480] [2023-01-28 05:14:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:13,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 05:14:13,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 05:14:13,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:13,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 05:14:13,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:13,344 INFO L130 PetriNetUnfolder]: 1401/1990 cut-off events. [2023-01-28 05:14:13,345 INFO L131 PetriNetUnfolder]: For 2927/2927 co-relation queries the response was YES. [2023-01-28 05:14:13,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 1990 events. 1401/1990 cut-off events. For 2927/2927 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7418 event pairs, 239 based on Foata normal form. 82/2072 useless extension candidates. Maximal degree in co-relation 3337. Up to 875 conditions per place. [2023-01-28 05:14:13,355 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 71 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2023-01-28 05:14:13,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 78 transitions, 500 flow [2023-01-28 05:14:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2023-01-28 05:14:13,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 05:14:13,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2023-01-28 05:14:13,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2023-01-28 05:14:13,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:13,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2023-01-28 05:14:13,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,359 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 159 flow. Second operand 4 states and 456 transitions. [2023-01-28 05:14:13,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 78 transitions, 500 flow [2023-01-28 05:14:13,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 492 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 05:14:13,362 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 222 flow [2023-01-28 05:14:13,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-01-28 05:14:13,363 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-01-28 05:14:13,363 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 222 flow [2023-01-28 05:14:13,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:13,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:13,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:14:13,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:13,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:13,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1646860855, now seen corresponding path program 2 times [2023-01-28 05:14:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820899937] [2023-01-28 05:14:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:13,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:13,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820899937] [2023-01-28 05:14:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820899937] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:14:13,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:14:13,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:14:13,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157737905] [2023-01-28 05:14:13,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:13,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:13,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:14:13,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:14:13,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:13,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:14:13,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:13,846 INFO L130 PetriNetUnfolder]: 1509/2138 cut-off events. [2023-01-28 05:14:13,846 INFO L131 PetriNetUnfolder]: For 5068/5068 co-relation queries the response was YES. [2023-01-28 05:14:13,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7652 conditions, 2138 events. 1509/2138 cut-off events. For 5068/5068 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8000 event pairs, 525 based on Foata normal form. 28/2166 useless extension candidates. Maximal degree in co-relation 3621. Up to 1983 conditions per place. [2023-01-28 05:14:13,856 INFO L137 encePairwiseOnDemand]: 224/228 looper letters, 48 selfloop transitions, 5 changer transitions 12/65 dead transitions. [2023-01-28 05:14:13,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 476 flow [2023-01-28 05:14:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 409 transitions. [2023-01-28 05:14:13,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44846491228070173 [2023-01-28 05:14:13,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 409 transitions. [2023-01-28 05:14:13,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 409 transitions. [2023-01-28 05:14:13,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:13,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 409 transitions. [2023-01-28 05:14:13,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,860 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 222 flow. Second operand 4 states and 409 transitions. [2023-01-28 05:14:13,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 476 flow [2023-01-28 05:14:13,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:14:13,865 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 271 flow [2023-01-28 05:14:13,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-01-28 05:14:13,867 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-01-28 05:14:13,867 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 271 flow [2023-01-28 05:14:13,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:13,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:13,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:14:13,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:13,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2073240921, now seen corresponding path program 3 times [2023-01-28 05:14:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:13,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964077859] [2023-01-28 05:14:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964077859] [2023-01-28 05:14:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964077859] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:14:13,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:14:13,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:14:13,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273571993] [2023-01-28 05:14:13,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:13,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:14:13,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:14:13,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:13,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:13,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:14:13,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:14,141 INFO L130 PetriNetUnfolder]: 1295/1808 cut-off events. [2023-01-28 05:14:14,141 INFO L131 PetriNetUnfolder]: For 5078/5078 co-relation queries the response was YES. [2023-01-28 05:14:14,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7044 conditions, 1808 events. 1295/1808 cut-off events. For 5078/5078 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6162 event pairs, 484 based on Foata normal form. 14/1822 useless extension candidates. Maximal degree in co-relation 6790. Up to 1683 conditions per place. [2023-01-28 05:14:14,150 INFO L137 encePairwiseOnDemand]: 224/228 looper letters, 49 selfloop transitions, 5 changer transitions 8/62 dead transitions. [2023-01-28 05:14:14,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 495 flow [2023-01-28 05:14:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-01-28 05:14:14,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2023-01-28 05:14:14,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-01-28 05:14:14,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-01-28 05:14:14,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:14,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-01-28 05:14:14,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,153 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 271 flow. Second operand 4 states and 405 transitions. [2023-01-28 05:14:14,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 495 flow [2023-01-28 05:14:14,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 484 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 05:14:14,157 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 289 flow [2023-01-28 05:14:14,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-01-28 05:14:14,158 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-28 05:14:14,158 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 289 flow [2023-01-28 05:14:14,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:14,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:14:14,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:14,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash -469343912, now seen corresponding path program 1 times [2023-01-28 05:14:14,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:14,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983116335] [2023-01-28 05:14:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:14,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983116335] [2023-01-28 05:14:14,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983116335] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:14,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232744036] [2023-01-28 05:14:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:14,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:14,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:14,294 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) [2023-01-28 05:14:14,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:14:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:14,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 05:14:14,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:14,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232744036] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:14,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:14:14,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-01-28 05:14:14,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330075724] [2023-01-28 05:14:14,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:14:14,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:14:14,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:14:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:14:14,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 05:14:14,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:14,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 05:14:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:14,683 INFO L130 PetriNetUnfolder]: 2542/3579 cut-off events. [2023-01-28 05:14:14,684 INFO L131 PetriNetUnfolder]: For 10236/10236 co-relation queries the response was YES. [2023-01-28 05:14:14,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14195 conditions, 3579 events. 2542/3579 cut-off events. For 10236/10236 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15162 event pairs, 368 based on Foata normal form. 168/3747 useless extension candidates. Maximal degree in co-relation 7263. Up to 1913 conditions per place. [2023-01-28 05:14:14,738 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 80 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-01-28 05:14:14,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 733 flow [2023-01-28 05:14:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:14:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:14:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 05:14:14,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2023-01-28 05:14:14,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 05:14:14,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 05:14:14,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:14,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 05:14:14,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,742 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 289 flow. Second operand 4 states and 454 transitions. [2023-01-28 05:14:14,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 733 flow [2023-01-28 05:14:14,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:14:14,746 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 384 flow [2023-01-28 05:14:14,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-01-28 05:14:14,746 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-01-28 05:14:14,746 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 384 flow [2023-01-28 05:14:14,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:14,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:14,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:14,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:14:14,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:14,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:14,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 326712243, now seen corresponding path program 1 times [2023-01-28 05:14:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667258802] [2023-01-28 05:14:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:15,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667258802] [2023-01-28 05:14:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667258802] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:15,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032773979] [2023-01-28 05:14:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:15,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:15,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:15,062 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) [2023-01-28 05:14:15,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:14:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:15,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 05:14:15,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:15,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:14:15,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032773979] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:14:15,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:14:15,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-01-28 05:14:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996467998] [2023-01-28 05:14:15,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:14:15,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:14:15,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:15,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:14:15,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:14:15,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 228 [2023-01-28 05:14:15,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:15,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:15,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 228 [2023-01-28 05:14:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:15,881 INFO L130 PetriNetUnfolder]: 7768/11212 cut-off events. [2023-01-28 05:14:15,881 INFO L131 PetriNetUnfolder]: For 43561/43561 co-relation queries the response was YES. [2023-01-28 05:14:15,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47530 conditions, 11212 events. 7768/11212 cut-off events. For 43561/43561 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 60764 event pairs, 1722 based on Foata normal form. 857/12069 useless extension candidates. Maximal degree in co-relation 25968. Up to 4773 conditions per place. [2023-01-28 05:14:16,012 INFO L137 encePairwiseOnDemand]: 222/228 looper letters, 119 selfloop transitions, 45 changer transitions 3/167 dead transitions. [2023-01-28 05:14:16,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 167 transitions, 1571 flow [2023-01-28 05:14:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:14:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:14:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-01-28 05:14:16,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517543859649123 [2023-01-28 05:14:16,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-01-28 05:14:16,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-01-28 05:14:16,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:16,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-01-28 05:14:16,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 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) [2023-01-28 05:14:16,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:16,018 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:16,018 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 384 flow. Second operand 5 states and 629 transitions. [2023-01-28 05:14:16,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 167 transitions, 1571 flow [2023-01-28 05:14:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 167 transitions, 1565 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-01-28 05:14:16,036 INFO L231 Difference]: Finished difference. Result has 59 places, 90 transitions, 910 flow [2023-01-28 05:14:16,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=910, PETRI_PLACES=59, PETRI_TRANSITIONS=90} [2023-01-28 05:14:16,037 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-01-28 05:14:16,037 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 90 transitions, 910 flow [2023-01-28 05:14:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:16,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:16,037 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:16,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 05:14:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:16,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:16,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1317515386, now seen corresponding path program 2 times [2023-01-28 05:14:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:16,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498392471] [2023-01-28 05:14:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:16,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498392471] [2023-01-28 05:14:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498392471] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:16,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025758729] [2023-01-28 05:14:16,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:14:16,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:16,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:16,375 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) [2023-01-28 05:14:16,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:14:16,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:14:16,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:14:16,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:14:16,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:16,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025758729] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:14:16,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:14:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 05:14:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391062586] [2023-01-28 05:14:16,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:14:16,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:14:16,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:14:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:14:16,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 05:14:16,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 90 transitions, 910 flow. Second operand has 15 states, 15 states have (on average 93.33333333333333) internal successors, (1400), 15 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:16,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:16,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 05:14:16,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:19,615 INFO L130 PetriNetUnfolder]: 24571/35096 cut-off events. [2023-01-28 05:14:19,615 INFO L131 PetriNetUnfolder]: For 166298/166298 co-relation queries the response was YES. [2023-01-28 05:14:19,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167227 conditions, 35096 events. 24571/35096 cut-off events. For 166298/166298 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 221645 event pairs, 2602 based on Foata normal form. 5500/40596 useless extension candidates. Maximal degree in co-relation 82340. Up to 16813 conditions per place. [2023-01-28 05:14:19,926 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 746 selfloop transitions, 316 changer transitions 0/1062 dead transitions. [2023-01-28 05:14:19,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 1062 transitions, 10861 flow [2023-01-28 05:14:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 05:14:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 05:14:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3588 transitions. [2023-01-28 05:14:19,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-01-28 05:14:19,932 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3588 transitions. [2023-01-28 05:14:19,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3588 transitions. [2023-01-28 05:14:19,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:19,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3588 transitions. [2023-01-28 05:14:19,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 102.51428571428572) internal successors, (3588), 35 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:19,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:19,945 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:19,945 INFO L175 Difference]: Start difference. First operand has 59 places, 90 transitions, 910 flow. Second operand 35 states and 3588 transitions. [2023-01-28 05:14:19,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 1062 transitions, 10861 flow [2023-01-28 05:14:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 1062 transitions, 9625 flow, removed 618 selfloop flow, removed 0 redundant places. [2023-01-28 05:14:20,061 INFO L231 Difference]: Finished difference. Result has 122 places, 389 transitions, 4934 flow [2023-01-28 05:14:20,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4934, PETRI_PLACES=122, PETRI_TRANSITIONS=389} [2023-01-28 05:14:20,062 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-01-28 05:14:20,062 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 389 transitions, 4934 flow [2023-01-28 05:14:20,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 93.33333333333333) internal successors, (1400), 15 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:20,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:20,062 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:20,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 05:14:20,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:20,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:20,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1179486957, now seen corresponding path program 3 times [2023-01-28 05:14:20,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:20,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2365520] [2023-01-28 05:14:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:20,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2365520] [2023-01-28 05:14:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2365520] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738746955] [2023-01-28 05:14:20,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:14:20,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:20,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:20,385 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) [2023-01-28 05:14:20,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 05:14:20,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:14:20,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:14:20,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:14:20,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:20,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738746955] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:14:20,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:14:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 05:14:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272341892] [2023-01-28 05:14:20,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:14:20,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 05:14:20,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 05:14:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-01-28 05:14:20,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:14:20,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 389 transitions, 4934 flow. Second operand has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:20,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:20,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:14:20,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:26,756 INFO L130 PetriNetUnfolder]: 32911/46963 cut-off events. [2023-01-28 05:14:26,756 INFO L131 PetriNetUnfolder]: For 1425468/1425468 co-relation queries the response was YES. [2023-01-28 05:14:26,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371594 conditions, 46963 events. 32911/46963 cut-off events. For 1425468/1425468 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 305920 event pairs, 6160 based on Foata normal form. 1192/48155 useless extension candidates. Maximal degree in co-relation 306181. Up to 18872 conditions per place. [2023-01-28 05:14:27,127 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 659 selfloop transitions, 142 changer transitions 45/846 dead transitions. [2023-01-28 05:14:27,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 846 transitions, 12293 flow [2023-01-28 05:14:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 05:14:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 05:14:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1637 transitions. [2023-01-28 05:14:27,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4487390350877193 [2023-01-28 05:14:27,130 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1637 transitions. [2023-01-28 05:14:27,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1637 transitions. [2023-01-28 05:14:27,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:27,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1637 transitions. [2023-01-28 05:14:27,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.3125) internal successors, (1637), 16 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:27,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:27,137 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:27,137 INFO L175 Difference]: Start difference. First operand has 122 places, 389 transitions, 4934 flow. Second operand 16 states and 1637 transitions. [2023-01-28 05:14:27,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 846 transitions, 12293 flow [2023-01-28 05:14:30,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 846 transitions, 11201 flow, removed 487 selfloop flow, removed 3 redundant places. [2023-01-28 05:14:30,288 INFO L231 Difference]: Finished difference. Result has 140 places, 495 transitions, 6778 flow [2023-01-28 05:14:30,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6778, PETRI_PLACES=140, PETRI_TRANSITIONS=495} [2023-01-28 05:14:30,288 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 106 predicate places. [2023-01-28 05:14:30,288 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 495 transitions, 6778 flow [2023-01-28 05:14:30,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:30,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:30,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:30,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 05:14:30,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:30,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:30,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2010129489, now seen corresponding path program 4 times [2023-01-28 05:14:30,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:30,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378253263] [2023-01-28 05:14:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:14:30,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378253263] [2023-01-28 05:14:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378253263] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659539479] [2023-01-28 05:14:30,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:14:30,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:30,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:30,758 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) [2023-01-28 05:14:30,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 05:14:30,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:14:30,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:14:30,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:14:30,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:30,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:31,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659539479] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:14:31,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:14:31,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2023-01-28 05:14:31,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287715675] [2023-01-28 05:14:31,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:14:31,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 05:14:31,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 05:14:31,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-01-28 05:14:31,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 05:14:31,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 495 transitions, 6778 flow. Second operand has 18 states, 18 states have (on average 92.38888888888889) internal successors, (1663), 18 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:31,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:31,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 05:14:31,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:14:41,657 INFO L130 PetriNetUnfolder]: 49792/69719 cut-off events. [2023-01-28 05:14:41,657 INFO L131 PetriNetUnfolder]: For 2415001/2415001 co-relation queries the response was YES. [2023-01-28 05:14:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599805 conditions, 69719 events. 49792/69719 cut-off events. For 2415001/2415001 co-relation queries the response was YES. Maximal size of possible extension queue 2716. Compared 458008 event pairs, 3954 based on Foata normal form. 1354/71073 useless extension candidates. Maximal degree in co-relation 544874. Up to 23207 conditions per place. [2023-01-28 05:14:42,307 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 1059 selfloop transitions, 579 changer transitions 44/1682 dead transitions. [2023-01-28 05:14:42,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1682 transitions, 27131 flow [2023-01-28 05:14:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 05:14:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 05:14:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3240 transitions. [2023-01-28 05:14:42,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2023-01-28 05:14:42,314 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3240 transitions. [2023-01-28 05:14:42,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3240 transitions. [2023-01-28 05:14:42,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:14:42,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3240 transitions. [2023-01-28 05:14:42,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 101.25) internal successors, (3240), 32 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:42,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 228.0) internal successors, (7524), 33 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:42,331 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 228.0) internal successors, (7524), 33 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:42,331 INFO L175 Difference]: Start difference. First operand has 140 places, 495 transitions, 6778 flow. Second operand 32 states and 3240 transitions. [2023-01-28 05:14:42,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 1682 transitions, 27131 flow [2023-01-28 05:14:49,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1682 transitions, 25141 flow, removed 891 selfloop flow, removed 6 redundant places. [2023-01-28 05:14:49,372 INFO L231 Difference]: Finished difference. Result has 184 places, 954 transitions, 16579 flow [2023-01-28 05:14:49,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=16579, PETRI_PLACES=184, PETRI_TRANSITIONS=954} [2023-01-28 05:14:49,373 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 150 predicate places. [2023-01-28 05:14:49,374 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 954 transitions, 16579 flow [2023-01-28 05:14:49,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 92.38888888888889) internal successors, (1663), 18 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:49,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:14:49,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:14:49,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 05:14:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 05:14:49,579 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:14:49,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:14:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1258277956, now seen corresponding path program 5 times [2023-01-28 05:14:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:14:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987913479] [2023-01-28 05:14:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:14:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:14:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:14:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:14:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987913479] [2023-01-28 05:14:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987913479] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:14:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054416472] [2023-01-28 05:14:49,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 05:14:49,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:14:49,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:14:49,703 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) [2023-01-28 05:14:49,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 05:14:49,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 05:14:49,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:14:49,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:14:49,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:14:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:49,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:14:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:14:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054416472] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:14:49,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:14:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-28 05:14:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573274163] [2023-01-28 05:14:49,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:14:49,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 05:14:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:14:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 05:14:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-01-28 05:14:49,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 05:14:49,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 954 transitions, 16579 flow. Second operand has 16 states, 16 states have (on average 93.0625) internal successors, (1489), 16 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:14:49,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:14:49,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 05:14:49,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:15:11,034 INFO L130 PetriNetUnfolder]: 71081/98866 cut-off events. [2023-01-28 05:15:11,034 INFO L131 PetriNetUnfolder]: For 4113218/4113218 co-relation queries the response was YES. [2023-01-28 05:15:12,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923757 conditions, 98866 events. 71081/98866 cut-off events. For 4113218/4113218 co-relation queries the response was YES. Maximal size of possible extension queue 3948. Compared 666810 event pairs, 5286 based on Foata normal form. 5814/104680 useless extension candidates. Maximal degree in co-relation 902438. Up to 37754 conditions per place. [2023-01-28 05:15:12,542 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 1550 selfloop transitions, 941 changer transitions 69/2560 dead transitions. [2023-01-28 05:15:12,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 2560 transitions, 45616 flow [2023-01-28 05:15:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 05:15:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 05:15:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3483 transitions. [2023-01-28 05:15:12,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43646616541353384 [2023-01-28 05:15:12,549 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3483 transitions. [2023-01-28 05:15:12,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3483 transitions. [2023-01-28 05:15:12,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:15:12,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3483 transitions. [2023-01-28 05:15:12,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 99.51428571428572) internal successors, (3483), 35 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:15:12,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:15:12,567 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:15:12,567 INFO L175 Difference]: Start difference. First operand has 184 places, 954 transitions, 16579 flow. Second operand 35 states and 3483 transitions. [2023-01-28 05:15:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 2560 transitions, 45616 flow [2023-01-28 05:15:45,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 2560 transitions, 42900 flow, removed 1308 selfloop flow, removed 3 redundant places. [2023-01-28 05:15:45,894 INFO L231 Difference]: Finished difference. Result has 237 places, 1524 transitions, 28336 flow [2023-01-28 05:15:45,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=14875, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28336, PETRI_PLACES=237, PETRI_TRANSITIONS=1524} [2023-01-28 05:15:45,895 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 203 predicate places. [2023-01-28 05:15:45,896 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 1524 transitions, 28336 flow [2023-01-28 05:15:45,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 93.0625) internal successors, (1489), 16 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:15:45,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:15:45,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:15:45,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 05:15:46,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 05:15:46,101 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:15:46,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:15:46,101 INFO L85 PathProgramCache]: Analyzing trace with hash 32477611, now seen corresponding path program 6 times [2023-01-28 05:15:46,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:15:46,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499550598] [2023-01-28 05:15:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:15:46,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:15:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:15:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:15:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:15:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499550598] [2023-01-28 05:15:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499550598] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:15:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298420737] [2023-01-28 05:15:46,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:15:46,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:15:46,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:15:46,233 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) [2023-01-28 05:15:46,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 05:15:46,316 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 05:15:46,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:15:46,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:15:46,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:15:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:15:46,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:15:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:15:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298420737] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:15:46,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:15:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 05:15:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340640370] [2023-01-28 05:15:46,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:15:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:15:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:15:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:15:46,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:15:46,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 228 [2023-01-28 05:15:46,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1524 transitions, 28336 flow. Second operand has 15 states, 15 states have (on average 97.6) internal successors, (1464), 15 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:15:46,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:15:46,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 228 [2023-01-28 05:15:46,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:16:20,106 INFO L130 PetriNetUnfolder]: 79095/110427 cut-off events. [2023-01-28 05:16:20,106 INFO L131 PetriNetUnfolder]: For 6087808/6087808 co-relation queries the response was YES. [2023-01-28 05:16:21,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194751 conditions, 110427 events. 79095/110427 cut-off events. For 6087808/6087808 co-relation queries the response was YES. Maximal size of possible extension queue 4457. Compared 759956 event pairs, 4816 based on Foata normal form. 3678/114105 useless extension candidates. Maximal degree in co-relation 1192728. Up to 37627 conditions per place. [2023-01-28 05:16:22,110 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 1756 selfloop transitions, 924 changer transitions 69/2749 dead transitions. [2023-01-28 05:16:22,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 2749 transitions, 55133 flow [2023-01-28 05:16:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-01-28 05:16:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-01-28 05:16:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4634 transitions. [2023-01-28 05:16:22,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516569200779727 [2023-01-28 05:16:22,114 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4634 transitions. [2023-01-28 05:16:22,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4634 transitions. [2023-01-28 05:16:22,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:16:22,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4634 transitions. [2023-01-28 05:16:22,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 102.97777777777777) internal successors, (4634), 45 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:16:22,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 228.0) internal successors, (10488), 46 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:16:22,125 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 228.0) internal successors, (10488), 46 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:16:22,125 INFO L175 Difference]: Start difference. First operand has 237 places, 1524 transitions, 28336 flow. Second operand 45 states and 4634 transitions. [2023-01-28 05:16:22,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 2749 transitions, 55133 flow [2023-01-28 05:18:17,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 2749 transitions, 50643 flow, removed 1594 selfloop flow, removed 10 redundant places. [2023-01-28 05:18:17,918 INFO L231 Difference]: Finished difference. Result has 285 places, 1800 transitions, 33151 flow [2023-01-28 05:18:17,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=24319, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=33151, PETRI_PLACES=285, PETRI_TRANSITIONS=1800} [2023-01-28 05:18:17,919 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 251 predicate places. [2023-01-28 05:18:17,919 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1800 transitions, 33151 flow [2023-01-28 05:18:17,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.6) internal successors, (1464), 15 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:17,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:17,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:17,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 05:18:18,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 05:18:18,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:18:18,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1518250674, now seen corresponding path program 7 times [2023-01-28 05:18:18,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:18,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001890038] [2023-01-28 05:18:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:18:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:18,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001890038] [2023-01-28 05:18:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001890038] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:18:18,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753405749] [2023-01-28 05:18:18,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 05:18:18,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:18:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:18:18,255 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) [2023-01-28 05:18:18,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 05:18:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:18,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:18:18,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:18:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:18,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:18:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753405749] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:18:18,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:18:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 05:18:18,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277987725] [2023-01-28 05:18:18,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:18:18,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:18:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:18:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:18:18,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 05:18:18,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1800 transitions, 33151 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:18,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:18,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 05:18:18,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:05,263 INFO L130 PetriNetUnfolder]: 95335/133066 cut-off events. [2023-01-28 05:19:05,263 INFO L131 PetriNetUnfolder]: For 9623872/9623872 co-relation queries the response was YES. [2023-01-28 05:19:07,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609635 conditions, 133066 events. 95335/133066 cut-off events. For 9623872/9623872 co-relation queries the response was YES. Maximal size of possible extension queue 5500. Compared 937328 event pairs, 10962 based on Foata normal form. 2966/136032 useless extension candidates. Maximal degree in co-relation 1596343. Up to 46129 conditions per place. [2023-01-28 05:19:08,037 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 2951 selfloop transitions, 1229 changer transitions 161/4341 dead transitions. [2023-01-28 05:19:08,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 4341 transitions, 98097 flow [2023-01-28 05:19:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 05:19:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 05:19:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3925 transitions. [2023-01-28 05:19:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44140800719748086 [2023-01-28 05:19:08,041 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3925 transitions. [2023-01-28 05:19:08,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3925 transitions. [2023-01-28 05:19:08,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:08,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3925 transitions. [2023-01-28 05:19:08,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 100.64102564102564) internal successors, (3925), 39 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:08,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 228.0) internal successors, (9120), 40 states have internal predecessors, (9120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:08,052 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 228.0) internal successors, (9120), 40 states have internal predecessors, (9120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:08,052 INFO L175 Difference]: Start difference. First operand has 285 places, 1800 transitions, 33151 flow. Second operand 39 states and 3925 transitions. [2023-01-28 05:19:08,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 4341 transitions, 98097 flow [2023-01-28 05:24:39,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 4341 transitions, 93912 flow, removed 1600 selfloop flow, removed 17 redundant places. [2023-01-28 05:24:39,242 INFO L231 Difference]: Finished difference. Result has 321 places, 2312 transitions, 46088 flow [2023-01-28 05:24:39,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=31097, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=755, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=894, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=46088, PETRI_PLACES=321, PETRI_TRANSITIONS=2312} [2023-01-28 05:24:39,243 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 287 predicate places. [2023-01-28 05:24:39,243 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 2312 transitions, 46088 flow [2023-01-28 05:24:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:39,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:39,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:39,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 05:24:39,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 05:24:39,444 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 05:24:39,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1979918782, now seen corresponding path program 8 times [2023-01-28 05:24:39,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:39,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493166113] [2023-01-28 05:24:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:39,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:24:39,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493166113] [2023-01-28 05:24:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493166113] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557441058] [2023-01-28 05:24:39,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:24:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:39,561 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) [2023-01-28 05:24:39,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 05:24:39,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:24:39,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:39,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 05:24:39,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:24:39,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:24:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557441058] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:39,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-01-28 05:24:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927605461] [2023-01-28 05:24:39,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:24:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:24:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:24:39,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 05:24:39,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 2312 transitions, 46088 flow. Second operand has 14 states, 14 states have (on average 94.07142857142857) internal successors, (1317), 14 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:39,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:39,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 05:24:39,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:46,032 INFO L130 PetriNetUnfolder]: 115546/161227 cut-off events. [2023-01-28 05:25:46,032 INFO L131 PetriNetUnfolder]: For 11646482/11646482 co-relation queries the response was YES. [2023-01-28 05:25:48,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2030627 conditions, 161227 events. 115546/161227 cut-off events. For 11646482/11646482 co-relation queries the response was YES. Maximal size of possible extension queue 6625. Compared 1161935 event pairs, 12674 based on Foata normal form. 890/162117 useless extension candidates. Maximal degree in co-relation 2004844. Up to 69078 conditions per place. [2023-01-28 05:25:49,941 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 3489 selfloop transitions, 1115 changer transitions 167/4771 dead transitions. [2023-01-28 05:25:49,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 4771 transitions, 111739 flow [2023-01-28 05:25:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 05:25:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 05:25:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1642 transitions. [2023-01-28 05:25:49,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45010964912280704 [2023-01-28 05:25:49,943 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1642 transitions. [2023-01-28 05:25:49,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1642 transitions. [2023-01-28 05:25:49,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:49,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1642 transitions. [2023-01-28 05:25:49,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.625) internal successors, (1642), 16 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:49,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:49,948 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:49,948 INFO L175 Difference]: Start difference. First operand has 321 places, 2312 transitions, 46088 flow. Second operand 16 states and 1642 transitions. [2023-01-28 05:25:49,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 4771 transitions, 111739 flow Received shutdown request... [2023-01-28 05:28:04,490 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 [2023-01-28 05:28:04,490 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:28:05,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-28 05:28:05,504 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 [2023-01-28 05:28:05,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 05:28:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 05:28:05,605 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 05:28:05,606 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 05:28:05,606 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 05:28:05,606 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 05:28:05,606 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 05:28:05,606 INFO L445 BasicCegarLoop]: Path program histogram: [8, 3, 2, 1, 1, 1] [2023-01-28 05:28:05,608 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:28:05,608 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:28:05,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:28:05 BasicIcfg [2023-01-28 05:28:05,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:28:05,610 INFO L158 Benchmark]: Toolchain (without parser) took 839186.81ms. Allocated memory was 444.6MB in the beginning and 15.1GB in the end (delta: 14.7GB). Free memory was 410.3MB in the beginning and 7.7GB in the end (delta: -7.3GB). Peak memory consumption was 10.9GB. Max. memory is 16.0GB. [2023-01-28 05:28:05,610 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 362.8MB. Free memory is still 315.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:28:05,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.54ms. Allocated memory is still 444.6MB. Free memory was 409.9MB in the beginning and 398.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 05:28:05,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.87ms. Allocated memory is still 444.6MB. Free memory was 398.5MB in the beginning and 396.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:28:05,611 INFO L158 Benchmark]: Boogie Preprocessor took 19.93ms. Allocated memory is still 444.6MB. Free memory was 396.9MB in the beginning and 395.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:28:05,611 INFO L158 Benchmark]: RCFGBuilder took 448.14ms. Allocated memory is still 444.6MB. Free memory was 395.2MB in the beginning and 374.7MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 05:28:05,611 INFO L158 Benchmark]: TraceAbstraction took 838470.54ms. Allocated memory was 444.6MB in the beginning and 15.1GB in the end (delta: 14.7GB). Free memory was 373.8MB in the beginning and 7.7GB in the end (delta: -7.3GB). Peak memory consumption was 10.8GB. Max. memory is 16.0GB. [2023-01-28 05:28:05,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 362.8MB. Free memory is still 315.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 215.54ms. Allocated memory is still 444.6MB. Free memory was 409.9MB in the beginning and 398.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.87ms. Allocated memory is still 444.6MB. Free memory was 398.5MB in the beginning and 396.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.93ms. Allocated memory is still 444.6MB. Free memory was 396.9MB in the beginning and 395.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 448.14ms. Allocated memory is still 444.6MB. Free memory was 395.2MB in the beginning and 374.7MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 838470.54ms. Allocated memory was 444.6MB in the beginning and 15.1GB in the end (delta: 14.7GB). Free memory was 373.8MB in the beginning and 7.7GB in the end (delta: -7.3GB). Peak memory consumption was 10.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 115 PlacesBefore, 34 PlacesAfterwards, 112 TransitionsBefore, 25 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 100 TotalNumberOfCompositions, 1470 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1470, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 652, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1470, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 652, unknown conditional: 0, unknown unconditional: 652] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 143 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 838.4s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 827.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2702 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2702 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5804 IncrementalHoareTripleChecker+Invalid, 5970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 0 mSDtfsCounter, 5804 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 810 GetRequests, 513 SyntacticMatches, 5 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46088occurred in iteration=15, InterpolantAutomatonStates: 238, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 943 ConstructedInterpolants, 0 QuantifiedInterpolants, 6127 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2823 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 40 InterpolantComputations, 8 PerfectInterpolantSequences, 99/164 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown