/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:46:52,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:46:52,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:46:52,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:46:52,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:46:52,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:46:52,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:46:52,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:46:52,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:46:52,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:46:52,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:46:52,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:46:52,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:46:52,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:46:52,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:46:52,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:46:52,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:46:52,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:46:52,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:46:52,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:46:52,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:46:52,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:46:52,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:46:52,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:46:52,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:46:52,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:46:52,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:46:52,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:46:52,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:46:52,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:46:52,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:46:52,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:46:52,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:46:52,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:46:52,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:46:52,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:46:52,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:46:52,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:46:52,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:46:52,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:46:52,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:46:52,155 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 08:46:52,177 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:46:52,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:46:52,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:46:52,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:46:52,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:46:52,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:46:52,179 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:46:52,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:46:52,179 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:46:52,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:46:52,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:46:52,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:46:52,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:46:52,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:46:52,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:46:52,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:46:52,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:46:52,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:46:52,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:46:52,353 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:46:52,353 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:46:52,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-01-28 08:46:53,280 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:46:53,419 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:46:53,420 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-01-28 08:46:53,424 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040a43bef/b50e5064ed9549b3ad075399a9a0eaaa/FLAGbccaa392c [2023-01-28 08:46:53,432 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040a43bef/b50e5064ed9549b3ad075399a9a0eaaa [2023-01-28 08:46:53,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:46:53,435 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:46:53,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:46:53,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:46:53,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:46:53,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314a06a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53, skipping insertion in model container [2023-01-28 08:46:53,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:46:53,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:46:53,578 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-01-28 08:46:53,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:46:53,592 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:46:53,612 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-01-28 08:46:53,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:46:53,622 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:46:53,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53 WrapperNode [2023-01-28 08:46:53,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:46:53,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:46:53,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:46:53,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:46:53,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,648 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 178 [2023-01-28 08:46:53,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:46:53,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:46:53,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:46:53,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:46:53,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:46:53,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:46:53,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:46:53,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:46:53,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (1/1) ... [2023-01-28 08:46:53,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:46:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:46:53,690 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 08:46:53,692 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 08:46:53,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 08:46:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 08:46:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:46:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:46:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:46:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:46:53,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:46:53,728 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 08:46:53,818 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:46:53,819 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:46:54,052 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:46:54,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:46:54,059 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 08:46:54,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:46:54 BoogieIcfgContainer [2023-01-28 08:46:54,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:46:54,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:46:54,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:46:54,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:46:54,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:46:53" (1/3) ... [2023-01-28 08:46:54,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfa787e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:46:54, skipping insertion in model container [2023-01-28 08:46:54,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:46:53" (2/3) ... [2023-01-28 08:46:54,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfa787e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:46:54, skipping insertion in model container [2023-01-28 08:46:54,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:46:54" (3/3) ... [2023-01-28 08:46:54,067 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-01-28 08:46:54,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:46:54,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 08:46:54,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:46:54,143 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 08:46:54,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 199 transitions, 414 flow [2023-01-28 08:46:54,233 INFO L130 PetriNetUnfolder]: 19/197 cut-off events. [2023-01-28 08:46:54,234 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 08:46:54,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 19/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-01-28 08:46:54,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 199 transitions, 414 flow [2023-01-28 08:46:54,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 189 transitions, 390 flow [2023-01-28 08:46:54,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:46:54,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 189 transitions, 390 flow [2023-01-28 08:46:54,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 189 transitions, 390 flow [2023-01-28 08:46:54,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 390 flow [2023-01-28 08:46:54,283 INFO L130 PetriNetUnfolder]: 19/189 cut-off events. [2023-01-28 08:46:54,283 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 08:46:54,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 189 events. 19/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-01-28 08:46:54,285 INFO L119 LiptonReduction]: Number of co-enabled transitions 3332 [2023-01-28 08:46:58,443 INFO L134 LiptonReduction]: Checked pairs total: 3976 [2023-01-28 08:46:58,443 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-01-28 08:46:58,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:46:58,468 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;@725ef595, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:46:58,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 08:46:58,482 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2023-01-28 08:46:58,482 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 08:46:58,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:46:58,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:46:58,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:46:58,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:46:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1174210109, now seen corresponding path program 1 times [2023-01-28 08:46:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:46:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570538888] [2023-01-28 08:46:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:46:58,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:46:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:46:58,804 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 08:46:58,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:46:58,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570538888] [2023-01-28 08:46:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570538888] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:46:58,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:46:58,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:46:58,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289392823] [2023-01-28 08:46:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:46:58,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:46:58,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:46:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:46:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:46:58,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-28 08:46:58,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 08:46:58,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:46:58,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-28 08:46:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:46:58,917 INFO L130 PetriNetUnfolder]: 91/155 cut-off events. [2023-01-28 08:46:58,917 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 08:46:58,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 155 events. 91/155 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 377 event pairs, 51 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 275. Up to 151 conditions per place. [2023-01-28 08:46:58,921 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-28 08:46:58,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 118 flow [2023-01-28 08:46:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:46:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:46:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-01-28 08:46:58,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41544715447154473 [2023-01-28 08:46:58,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-01-28 08:46:58,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-01-28 08:46:58,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:46:58,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-01-28 08:46:58,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:46:58,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 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 08:46:58,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 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 08:46:58,951 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 511 transitions. [2023-01-28 08:46:58,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 118 flow [2023-01-28 08:46:58,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 08:46:58,955 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 76 flow [2023-01-28 08:46:58,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2023-01-28 08:46:58,961 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-28 08:46:58,961 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 76 flow [2023-01-28 08:46:58,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 08:46:58,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:46:58,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:46:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:46:58,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:46:58,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:46:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash 505710322, now seen corresponding path program 1 times [2023-01-28 08:46:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:46:58,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920022577] [2023-01-28 08:46:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:46:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:46:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:46:59,066 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 08:46:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:46:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920022577] [2023-01-28 08:46:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920022577] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:46:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987569980] [2023-01-28 08:46:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:46:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:46:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:46:59,072 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 08:46:59,074 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 08:46:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:46:59,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 08:46:59,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:46:59,211 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 08:46:59,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:46:59,227 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 08:46:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987569980] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:46:59,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:46:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-28 08:46:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680824270] [2023-01-28 08:46:59,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:46:59,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 08:46:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:46:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 08:46:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:46:59,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-28 08:46:59,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 163.875) internal successors, (1311), 8 states have internal predecessors, (1311), 0 states have call successors, (0), 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 08:46:59,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:46:59,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-28 08:46:59,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:46:59,329 INFO L130 PetriNetUnfolder]: 91/161 cut-off events. [2023-01-28 08:46:59,329 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 08:46:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 161 events. 91/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 378 event pairs, 51 based on Foata normal form. 3/123 useless extension candidates. Maximal degree in co-relation 315. Up to 151 conditions per place. [2023-01-28 08:46:59,330 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2023-01-28 08:46:59,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 164 flow [2023-01-28 08:46:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:46:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:46:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2023-01-28 08:46:59,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.408130081300813 [2023-01-28 08:46:59,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2023-01-28 08:46:59,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2023-01-28 08:46:59,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:46:59,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2023-01-28 08:46:59,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 0 states have call successors, (0), 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 08:46:59,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 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 08:46:59,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 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 08:46:59,339 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 76 flow. Second operand 6 states and 1004 transitions. [2023-01-28 08:46:59,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 164 flow [2023-01-28 08:46:59,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:46:59,341 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 138 flow [2023-01-28 08:46:59,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-01-28 08:46:59,341 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-28 08:46:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 138 flow [2023-01-28 08:46:59,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 163.875) internal successors, (1311), 8 states have internal predecessors, (1311), 0 states have call successors, (0), 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 08:46:59,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:46:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:46:59,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 08:46:59,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:46:59,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:46:59,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:46:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1388696397, now seen corresponding path program 2 times [2023-01-28 08:46:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:46:59,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636536958] [2023-01-28 08:46:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:46:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:46:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:46:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:46:59,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:46:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636536958] [2023-01-28 08:46:59,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636536958] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:46:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702649964] [2023-01-28 08:46:59,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:46:59,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:46:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:46:59,725 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 08:46:59,752 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 08:46:59,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 08:46:59,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:46:59,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:46:59,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:46:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 08:46:59,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:46:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702649964] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:46:59,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:46:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 08:46:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718489928] [2023-01-28 08:46:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:46:59,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:46:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:46:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:46:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:46:59,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 08:46:59,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 08:46:59,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:46:59,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 08:46:59,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:46:59,968 INFO L130 PetriNetUnfolder]: 195/342 cut-off events. [2023-01-28 08:46:59,969 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 08:46:59,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 342 events. 195/342 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1154 event pairs, 60 based on Foata normal form. 4/263 useless extension candidates. Maximal degree in co-relation 679. Up to 166 conditions per place. [2023-01-28 08:46:59,970 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 53 selfloop transitions, 5 changer transitions 2/60 dead transitions. [2023-01-28 08:46:59,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 60 transitions, 318 flow [2023-01-28 08:46:59,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:46:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:46:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 908 transitions. [2023-01-28 08:46:59,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429268292682927 [2023-01-28 08:46:59,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 908 transitions. [2023-01-28 08:46:59,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 908 transitions. [2023-01-28 08:46:59,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:46:59,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 908 transitions. [2023-01-28 08:46:59,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 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 08:46:59,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 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 08:46:59,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 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 08:46:59,978 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 138 flow. Second operand 5 states and 908 transitions. [2023-01-28 08:46:59,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 60 transitions, 318 flow [2023-01-28 08:46:59,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 302 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 08:46:59,979 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 146 flow [2023-01-28 08:46:59,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-01-28 08:46:59,980 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-01-28 08:46:59,980 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 146 flow [2023-01-28 08:46:59,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 08:46:59,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:46:59,981 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:46:59,989 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 08:47:00,187 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,SelfDestructingSolverStorable2 [2023-01-28 08:47:00,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:00,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -860076919, now seen corresponding path program 3 times [2023-01-28 08:47:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763097335] [2023-01-28 08:47:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:47:00,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:00,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763097335] [2023-01-28 08:47:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763097335] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529786665] [2023-01-28 08:47:00,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:47:00,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:00,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:00,323 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 08:47:00,324 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 08:47:00,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 08:47:00,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:00,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:47:00,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 08:47:00,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:00,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529786665] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:00,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:00,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 08:47:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808630764] [2023-01-28 08:47:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:00,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:47:00,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:47:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:00,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 08:47:00,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 08:47:00,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:00,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 08:47:00,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:00,498 INFO L130 PetriNetUnfolder]: 239/416 cut-off events. [2023-01-28 08:47:00,498 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-01-28 08:47:00,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 416 events. 239/416 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1450 event pairs, 58 based on Foata normal form. 4/351 useless extension candidates. Maximal degree in co-relation 922. Up to 309 conditions per place. [2023-01-28 08:47:00,500 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 51 selfloop transitions, 4 changer transitions 3/58 dead transitions. [2023-01-28 08:47:00,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 324 flow [2023-01-28 08:47:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:47:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:47:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2023-01-28 08:47:00,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44695121951219513 [2023-01-28 08:47:00,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2023-01-28 08:47:00,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2023-01-28 08:47:00,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:00,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2023-01-28 08:47:00,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 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 08:47:00,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 08:47:00,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 08:47:00,506 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 146 flow. Second operand 4 states and 733 transitions. [2023-01-28 08:47:00,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 324 flow [2023-01-28 08:47:00,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 08:47:00,509 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 180 flow [2023-01-28 08:47:00,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-28 08:47:00,509 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-28 08:47:00,509 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 180 flow [2023-01-28 08:47:00,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 08:47:00,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:00,510 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:00,516 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 08:47:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:00,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:00,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2094169333, now seen corresponding path program 4 times [2023-01-28 08:47:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969763926] [2023-01-28 08:47:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:47:00,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:00,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969763926] [2023-01-28 08:47:00,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969763926] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:00,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491504378] [2023-01-28 08:47:00,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:47:00,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:00,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:00,813 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 08:47:00,815 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 08:47:00,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:47:00,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:47:00,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 08:47:00,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:00,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491504378] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:00,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:00,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-28 08:47:00,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367191113] [2023-01-28 08:47:00,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:00,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:47:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:47:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:00,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 08:47:00,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 08:47:00,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:00,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 08:47:00,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:00,971 INFO L130 PetriNetUnfolder]: 229/396 cut-off events. [2023-01-28 08:47:00,971 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-01-28 08:47:00,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 396 events. 229/396 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1357 event pairs, 64 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 951. Up to 189 conditions per place. [2023-01-28 08:47:00,973 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 54 selfloop transitions, 7 changer transitions 3/64 dead transitions. [2023-01-28 08:47:00,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 377 flow [2023-01-28 08:47:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:47:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:47:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 737 transitions. [2023-01-28 08:47:00,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44939024390243903 [2023-01-28 08:47:00,975 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 737 transitions. [2023-01-28 08:47:00,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 737 transitions. [2023-01-28 08:47:00,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:00,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 737 transitions. [2023-01-28 08:47:00,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 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 08:47:00,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 08:47:00,979 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 08:47:00,979 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 180 flow. Second operand 4 states and 737 transitions. [2023-01-28 08:47:00,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 377 flow [2023-01-28 08:47:00,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 373 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 08:47:00,982 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 205 flow [2023-01-28 08:47:00,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-01-28 08:47:00,982 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-01-28 08:47:00,983 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 205 flow [2023-01-28 08:47:00,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 08:47:00,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:00,985 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:00,996 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 08:47:01,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:01,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:01,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1210593385, now seen corresponding path program 1 times [2023-01-28 08:47:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199677040] [2023-01-28 08:47:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:47:01,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199677040] [2023-01-28 08:47:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199677040] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079231459] [2023-01-28 08:47:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:01,297 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 08:47:01,299 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 08:47:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:01,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 08:47:01,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:47:01,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:47:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:47:01,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079231459] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:47:01,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:47:01,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-28 08:47:01,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128024308] [2023-01-28 08:47:01,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:47:01,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 08:47:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:01,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 08:47:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-01-28 08:47:01,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-28 08:47:01,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 205 flow. Second operand has 17 states, 17 states have (on average 163.0) internal successors, (2771), 17 states have internal predecessors, (2771), 0 states have call successors, (0), 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 08:47:01,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:01,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-28 08:47:01,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:01,610 INFO L130 PetriNetUnfolder]: 198/356 cut-off events. [2023-01-28 08:47:01,610 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-01-28 08:47:01,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 356 events. 198/356 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1206 event pairs, 114 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 861. Up to 332 conditions per place. [2023-01-28 08:47:01,612 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 29 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2023-01-28 08:47:01,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 299 flow [2023-01-28 08:47:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 08:47:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 08:47:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1163 transitions. [2023-01-28 08:47:01,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052264808362369 [2023-01-28 08:47:01,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1163 transitions. [2023-01-28 08:47:01,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1163 transitions. [2023-01-28 08:47:01,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:01,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1163 transitions. [2023-01-28 08:47:01,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 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 08:47:01,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 08:47:01,620 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 08:47:01,620 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 205 flow. Second operand 7 states and 1163 transitions. [2023-01-28 08:47:01,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 299 flow [2023-01-28 08:47:01,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 287 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 08:47:01,622 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 239 flow [2023-01-28 08:47:01,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-01-28 08:47:01,623 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2023-01-28 08:47:01,623 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 239 flow [2023-01-28 08:47:01,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 163.0) internal successors, (2771), 17 states have internal predecessors, (2771), 0 states have call successors, (0), 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 08:47:01,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:01,624 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:01,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 08:47:01,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:01,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:01,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash 269385230, now seen corresponding path program 2 times [2023-01-28 08:47:01,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522804254] [2023-01-28 08:47:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522804254] [2023-01-28 08:47:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522804254] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:02,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428229645] [2023-01-28 08:47:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:02,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:02,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 239 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:02,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:02,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:02,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:02,833 INFO L130 PetriNetUnfolder]: 307/548 cut-off events. [2023-01-28 08:47:02,833 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-01-28 08:47:02,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 548 events. 307/548 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2154 event pairs, 41 based on Foata normal form. 13/468 useless extension candidates. Maximal degree in co-relation 1270. Up to 130 conditions per place. [2023-01-28 08:47:02,836 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 94 selfloop transitions, 28 changer transitions 10/132 dead transitions. [2023-01-28 08:47:02,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 747 flow [2023-01-28 08:47:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:47:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:47:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1834 transitions. [2023-01-28 08:47:02,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34409005628517825 [2023-01-28 08:47:02,840 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1834 transitions. [2023-01-28 08:47:02,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1834 transitions. [2023-01-28 08:47:02,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:02,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1834 transitions. [2023-01-28 08:47:02,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 0 states have call successors, (0), 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 08:47:02,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:47:02,850 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:47:02,850 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 239 flow. Second operand 13 states and 1834 transitions. [2023-01-28 08:47:02,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 747 flow [2023-01-28 08:47:02,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 132 transitions, 723 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:02,854 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 423 flow [2023-01-28 08:47:02,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=423, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-01-28 08:47:02,855 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-01-28 08:47:02,856 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 423 flow [2023-01-28 08:47:02,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:02,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:02,857 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:02,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 08:47:02,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:02,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1843151562, now seen corresponding path program 3 times [2023-01-28 08:47:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:02,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955313849] [2023-01-28 08:47:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955313849] [2023-01-28 08:47:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955313849] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500493682] [2023-01-28 08:47:03,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:47:03,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:03,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:03,793 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 08:47:03,795 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 08:47:03,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 08:47:03,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 08:47:03,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:04,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500493682] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:04,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:04,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 08:47:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934278551] [2023-01-28 08:47:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-01-28 08:47:04,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:04,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 423 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:04,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:04,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:04,508 INFO L130 PetriNetUnfolder]: 323/572 cut-off events. [2023-01-28 08:47:04,508 INFO L131 PetriNetUnfolder]: For 660/660 co-relation queries the response was YES. [2023-01-28 08:47:04,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 572 events. 323/572 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2234 event pairs, 51 based on Foata normal form. 7/579 useless extension candidates. Maximal degree in co-relation 1867. Up to 179 conditions per place. [2023-01-28 08:47:04,512 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 78 selfloop transitions, 24 changer transitions 9/111 dead transitions. [2023-01-28 08:47:04,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 811 flow [2023-01-28 08:47:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1271 transitions. [2023-01-28 08:47:04,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2023-01-28 08:47:04,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1271 transitions. [2023-01-28 08:47:04,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1271 transitions. [2023-01-28 08:47:04,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:04,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1271 transitions. [2023-01-28 08:47:04,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.22222222222223) internal successors, (1271), 9 states have internal predecessors, (1271), 0 states have call successors, (0), 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 08:47:04,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:04,521 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:04,521 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 423 flow. Second operand 9 states and 1271 transitions. [2023-01-28 08:47:04,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 811 flow [2023-01-28 08:47:04,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 800 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 08:47:04,525 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 525 flow [2023-01-28 08:47:04,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-01-28 08:47:04,525 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-01-28 08:47:04,526 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 525 flow [2023-01-28 08:47:04,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:04,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:04,526 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:04,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:04,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:04,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:04,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1894417440, now seen corresponding path program 4 times [2023-01-28 08:47:04,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:04,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774727862] [2023-01-28 08:47:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:05,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:05,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774727862] [2023-01-28 08:47:05,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774727862] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:05,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814205782] [2023-01-28 08:47:05,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:47:05,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:05,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:05,702 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 08:47:05,704 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 08:47:05,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:47:05,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:05,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 08:47:05,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:05,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814205782] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 22 [2023-01-28 08:47:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389529238] [2023-01-28 08:47:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 08:47:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 08:47:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-01-28 08:47:05,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 410 [2023-01-28 08:47:05,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 140.375) internal successors, (1123), 8 states have internal predecessors, (1123), 0 states have call successors, (0), 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 08:47:05,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:05,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 410 [2023-01-28 08:47:05,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:06,160 INFO L130 PetriNetUnfolder]: 324/583 cut-off events. [2023-01-28 08:47:06,160 INFO L131 PetriNetUnfolder]: For 1287/1287 co-relation queries the response was YES. [2023-01-28 08:47:06,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 583 events. 324/583 cut-off events. For 1287/1287 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2371 event pairs, 79 based on Foata normal form. 7/590 useless extension candidates. Maximal degree in co-relation 2254. Up to 204 conditions per place. [2023-01-28 08:47:06,164 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 83 selfloop transitions, 23 changer transitions 6/112 dead transitions. [2023-01-28 08:47:06,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 908 flow [2023-01-28 08:47:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 08:47:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 08:47:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1183 transitions. [2023-01-28 08:47:06,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36067073170731706 [2023-01-28 08:47:06,167 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1183 transitions. [2023-01-28 08:47:06,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1183 transitions. [2023-01-28 08:47:06,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:06,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1183 transitions. [2023-01-28 08:47:06,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.875) internal successors, (1183), 8 states have internal predecessors, (1183), 0 states have call successors, (0), 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 08:47:06,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:47:06,172 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:47:06,172 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 525 flow. Second operand 8 states and 1183 transitions. [2023-01-28 08:47:06,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 908 flow [2023-01-28 08:47:06,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 864 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:06,179 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 577 flow [2023-01-28 08:47:06,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-01-28 08:47:06,180 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2023-01-28 08:47:06,180 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 577 flow [2023-01-28 08:47:06,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.375) internal successors, (1123), 8 states have internal predecessors, (1123), 0 states have call successors, (0), 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 08:47:06,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:06,181 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:06,186 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 08:47:06,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:06,385 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:06,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1075580716, now seen corresponding path program 5 times [2023-01-28 08:47:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:06,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090897559] [2023-01-28 08:47:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:06,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:47:07,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090897559] [2023-01-28 08:47:07,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090897559] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106584207] [2023-01-28 08:47:07,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:47:07,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:07,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:07,507 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 08:47:07,509 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 08:47:07,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:47:07,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:07,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 08:47:07,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:07,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:07,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106584207] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:07,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:07,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 29 [2023-01-28 08:47:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447638331] [2023-01-28 08:47:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:07,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-28 08:47:07,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:07,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 577 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:07,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:07,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:07,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:08,229 INFO L130 PetriNetUnfolder]: 320/569 cut-off events. [2023-01-28 08:47:08,230 INFO L131 PetriNetUnfolder]: For 1731/1731 co-relation queries the response was YES. [2023-01-28 08:47:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 569 events. 320/569 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2212 event pairs, 55 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 2303. Up to 179 conditions per place. [2023-01-28 08:47:08,233 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 78 selfloop transitions, 24 changer transitions 10/112 dead transitions. [2023-01-28 08:47:08,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 955 flow [2023-01-28 08:47:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1268 transitions. [2023-01-28 08:47:08,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34363143631436316 [2023-01-28 08:47:08,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1268 transitions. [2023-01-28 08:47:08,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1268 transitions. [2023-01-28 08:47:08,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:08,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1268 transitions. [2023-01-28 08:47:08,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.88888888888889) internal successors, (1268), 9 states have internal predecessors, (1268), 0 states have call successors, (0), 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 08:47:08,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:08,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:08,253 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 577 flow. Second operand 9 states and 1268 transitions. [2023-01-28 08:47:08,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 955 flow [2023-01-28 08:47:08,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 112 transitions, 901 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 08:47:08,260 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 563 flow [2023-01-28 08:47:08,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-01-28 08:47:08,261 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2023-01-28 08:47:08,261 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 563 flow [2023-01-28 08:47:08,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:08,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:08,262 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:08,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:08,467 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,SelfDestructingSolverStorable9 [2023-01-28 08:47:08,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:08,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1130882794, now seen corresponding path program 6 times [2023-01-28 08:47:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403139437] [2023-01-28 08:47:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:08,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403139437] [2023-01-28 08:47:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403139437] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:08,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276453816] [2023-01-28 08:47:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:08,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:08,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:08,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 563 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:08,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:08,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:08,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:09,182 INFO L130 PetriNetUnfolder]: 322/583 cut-off events. [2023-01-28 08:47:09,182 INFO L131 PetriNetUnfolder]: For 1577/1577 co-relation queries the response was YES. [2023-01-28 08:47:09,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 583 events. 322/583 cut-off events. For 1577/1577 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2368 event pairs, 37 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 2324. Up to 149 conditions per place. [2023-01-28 08:47:09,186 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 97 selfloop transitions, 31 changer transitions 9/137 dead transitions. [2023-01-28 08:47:09,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1103 flow [2023-01-28 08:47:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:47:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:47:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1962 transitions. [2023-01-28 08:47:09,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34181184668989545 [2023-01-28 08:47:09,190 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1962 transitions. [2023-01-28 08:47:09,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1962 transitions. [2023-01-28 08:47:09,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:09,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1962 transitions. [2023-01-28 08:47:09,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.14285714285714) internal successors, (1962), 14 states have internal predecessors, (1962), 0 states have call successors, (0), 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 08:47:09,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:09,198 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:09,198 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 563 flow. Second operand 14 states and 1962 transitions. [2023-01-28 08:47:09,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1103 flow [2023-01-28 08:47:09,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1058 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 08:47:09,204 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 586 flow [2023-01-28 08:47:09,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2023-01-28 08:47:09,205 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2023-01-28 08:47:09,205 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 586 flow [2023-01-28 08:47:09,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:09,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:09,205 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:09,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 08:47:09,206 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:09,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 583298390, now seen corresponding path program 7 times [2023-01-28 08:47:09,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:09,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104357610] [2023-01-28 08:47:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:09,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:09,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:09,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104357610] [2023-01-28 08:47:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104357610] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:09,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:09,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909019532] [2023-01-28 08:47:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:09,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:09,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:09,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 586 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:09,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:09,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:09,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:09,885 INFO L130 PetriNetUnfolder]: 319/570 cut-off events. [2023-01-28 08:47:09,885 INFO L131 PetriNetUnfolder]: For 1650/1650 co-relation queries the response was YES. [2023-01-28 08:47:09,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 570 events. 319/570 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2258 event pairs, 37 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 2325. Up to 149 conditions per place. [2023-01-28 08:47:09,889 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 91 selfloop transitions, 30 changer transitions 7/128 dead transitions. [2023-01-28 08:47:09,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 128 transitions, 1072 flow [2023-01-28 08:47:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:47:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:47:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1689 transitions. [2023-01-28 08:47:09,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3432926829268293 [2023-01-28 08:47:09,894 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1689 transitions. [2023-01-28 08:47:09,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1689 transitions. [2023-01-28 08:47:09,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:09,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1689 transitions. [2023-01-28 08:47:09,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.75) internal successors, (1689), 12 states have internal predecessors, (1689), 0 states have call successors, (0), 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 08:47:09,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:09,904 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:09,904 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 586 flow. Second operand 12 states and 1689 transitions. [2023-01-28 08:47:09,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 128 transitions, 1072 flow [2023-01-28 08:47:09,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 976 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-01-28 08:47:09,910 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 559 flow [2023-01-28 08:47:09,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2023-01-28 08:47:09,911 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-28 08:47:09,911 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 559 flow [2023-01-28 08:47:09,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:09,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:09,911 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 08:47:09,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:09,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1827664836, now seen corresponding path program 8 times [2023-01-28 08:47:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:09,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808621055] [2023-01-28 08:47:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:10,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808621055] [2023-01-28 08:47:10,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808621055] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657880074] [2023-01-28 08:47:10,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:47:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:10,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:10,694 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 08:47:10,695 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 08:47:10,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 08:47:10,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:10,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 08:47:10,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:11,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:11,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657880074] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:11,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:11,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 08:47:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36428224] [2023-01-28 08:47:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-01-28 08:47:11,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:11,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 559 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:11,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:11,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:11,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:11,425 INFO L130 PetriNetUnfolder]: 375/650 cut-off events. [2023-01-28 08:47:11,425 INFO L131 PetriNetUnfolder]: For 1559/1559 co-relation queries the response was YES. [2023-01-28 08:47:11,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 650 events. 375/650 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2612 event pairs, 57 based on Foata normal form. 7/657 useless extension candidates. Maximal degree in co-relation 2546. Up to 215 conditions per place. [2023-01-28 08:47:11,429 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 87 selfloop transitions, 27 changer transitions 9/123 dead transitions. [2023-01-28 08:47:11,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 1058 flow [2023-01-28 08:47:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1273 transitions. [2023-01-28 08:47:11,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34498644986449867 [2023-01-28 08:47:11,433 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1273 transitions. [2023-01-28 08:47:11,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1273 transitions. [2023-01-28 08:47:11,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:11,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1273 transitions. [2023-01-28 08:47:11,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.44444444444446) internal successors, (1273), 9 states have internal predecessors, (1273), 0 states have call successors, (0), 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 08:47:11,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:11,439 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:11,439 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 559 flow. Second operand 9 states and 1273 transitions. [2023-01-28 08:47:11,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 1058 flow [2023-01-28 08:47:11,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 123 transitions, 976 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-28 08:47:11,445 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 689 flow [2023-01-28 08:47:11,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=689, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-01-28 08:47:11,446 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-28 08:47:11,446 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 689 flow [2023-01-28 08:47:11,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:11,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:11,446 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:11,453 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 08:47:11,650 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 08:47:11,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:11,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1146369520, now seen corresponding path program 9 times [2023-01-28 08:47:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568280561] [2023-01-28 08:47:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:11,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568280561] [2023-01-28 08:47:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568280561] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390911156] [2023-01-28 08:47:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:12,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:12,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:12,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:12,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:12,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:12,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:12,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:12,361 INFO L130 PetriNetUnfolder]: 384/687 cut-off events. [2023-01-28 08:47:12,361 INFO L131 PetriNetUnfolder]: For 2804/2804 co-relation queries the response was YES. [2023-01-28 08:47:12,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 687 events. 384/687 cut-off events. For 2804/2804 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2921 event pairs, 51 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 3067. Up to 177 conditions per place. [2023-01-28 08:47:12,365 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 114 selfloop transitions, 34 changer transitions 9/157 dead transitions. [2023-01-28 08:47:12,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1342 flow [2023-01-28 08:47:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:47:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:47:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1971 transitions. [2023-01-28 08:47:12,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34337979094076654 [2023-01-28 08:47:12,370 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1971 transitions. [2023-01-28 08:47:12,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1971 transitions. [2023-01-28 08:47:12,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:12,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1971 transitions. [2023-01-28 08:47:12,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.78571428571428) internal successors, (1971), 14 states have internal predecessors, (1971), 0 states have call successors, (0), 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 08:47:12,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:12,379 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:12,380 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 689 flow. Second operand 14 states and 1971 transitions. [2023-01-28 08:47:12,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1342 flow [2023-01-28 08:47:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 1285 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:12,393 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 774 flow [2023-01-28 08:47:12,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=774, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-01-28 08:47:12,393 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-01-28 08:47:12,393 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 774 flow [2023-01-28 08:47:12,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:12,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:12,394 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:12,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 08:47:12,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:12,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash 567811664, now seen corresponding path program 10 times [2023-01-28 08:47:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:12,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279184591] [2023-01-28 08:47:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:12,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:12,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279184591] [2023-01-28 08:47:12,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279184591] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:12,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:12,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:12,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576279557] [2023-01-28 08:47:12,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:12,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:12,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:12,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:12,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:12,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 774 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:12,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:12,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:12,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:13,096 INFO L130 PetriNetUnfolder]: 386/693 cut-off events. [2023-01-28 08:47:13,096 INFO L131 PetriNetUnfolder]: For 2811/2811 co-relation queries the response was YES. [2023-01-28 08:47:13,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 693 events. 386/693 cut-off events. For 2811/2811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2993 event pairs, 57 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 3057. Up to 245 conditions per place. [2023-01-28 08:47:13,100 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 93 selfloop transitions, 28 changer transitions 7/128 dead transitions. [2023-01-28 08:47:13,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 1190 flow [2023-01-28 08:47:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1270 transitions. [2023-01-28 08:47:13,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34417344173441733 [2023-01-28 08:47:13,103 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1270 transitions. [2023-01-28 08:47:13,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1270 transitions. [2023-01-28 08:47:13,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:13,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1270 transitions. [2023-01-28 08:47:13,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.11111111111111) internal successors, (1270), 9 states have internal predecessors, (1270), 0 states have call successors, (0), 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 08:47:13,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:13,110 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:13,110 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 774 flow. Second operand 9 states and 1270 transitions. [2023-01-28 08:47:13,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 1190 flow [2023-01-28 08:47:13,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 1145 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-01-28 08:47:13,122 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 811 flow [2023-01-28 08:47:13,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-01-28 08:47:13,123 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-01-28 08:47:13,123 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 811 flow [2023-01-28 08:47:13,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:13,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:13,124 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 08:47:13,125 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:13,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -132681324, now seen corresponding path program 11 times [2023-01-28 08:47:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095418463] [2023-01-28 08:47:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:13,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095418463] [2023-01-28 08:47:13,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095418463] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:13,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:13,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524676087] [2023-01-28 08:47:13,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:13,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:13,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:13,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:13,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:13,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:13,819 INFO L130 PetriNetUnfolder]: 384/683 cut-off events. [2023-01-28 08:47:13,820 INFO L131 PetriNetUnfolder]: For 2641/2641 co-relation queries the response was YES. [2023-01-28 08:47:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3050 conditions, 683 events. 384/683 cut-off events. For 2641/2641 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2903 event pairs, 55 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 2999. Up to 177 conditions per place. [2023-01-28 08:47:13,824 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 110 selfloop transitions, 32 changer transitions 7/149 dead transitions. [2023-01-28 08:47:13,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 1351 flow [2023-01-28 08:47:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:47:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:47:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1695 transitions. [2023-01-28 08:47:13,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3445121951219512 [2023-01-28 08:47:13,826 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1695 transitions. [2023-01-28 08:47:13,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1695 transitions. [2023-01-28 08:47:13,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:13,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1695 transitions. [2023-01-28 08:47:13,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.25) internal successors, (1695), 12 states have internal predecessors, (1695), 0 states have call successors, (0), 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 08:47:13,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:13,835 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:13,835 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 811 flow. Second operand 12 states and 1695 transitions. [2023-01-28 08:47:13,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 1351 flow [2023-01-28 08:47:13,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 1287 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-01-28 08:47:13,844 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 810 flow [2023-01-28 08:47:13,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=810, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-01-28 08:47:13,844 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-01-28 08:47:13,845 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 810 flow [2023-01-28 08:47:13,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:13,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:13,845 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:13,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 08:47:13,845 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:13,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1819505128, now seen corresponding path program 12 times [2023-01-28 08:47:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229513075] [2023-01-28 08:47:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:47:15,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229513075] [2023-01-28 08:47:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229513075] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855870526] [2023-01-28 08:47:15,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:47:15,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:15,256 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 08:47:15,280 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 08:47:15,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 08:47:15,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:15,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 08:47:15,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:15,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:47:15,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:47:15,698 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 08:47:15,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-01-28 08:47:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:15,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:15,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855870526] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:15,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:15,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2023-01-28 08:47:15,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228361735] [2023-01-28 08:47:15,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:15,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:15,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:15,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:15,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-01-28 08:47:15,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-28 08:47:15,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 810 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 08:47:15,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:15,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-28 08:47:15,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:16,241 INFO L130 PetriNetUnfolder]: 418/749 cut-off events. [2023-01-28 08:47:16,241 INFO L131 PetriNetUnfolder]: For 3224/3224 co-relation queries the response was YES. [2023-01-28 08:47:16,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 749 events. 418/749 cut-off events. For 3224/3224 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3252 event pairs, 59 based on Foata normal form. 18/767 useless extension candidates. Maximal degree in co-relation 3324. Up to 260 conditions per place. [2023-01-28 08:47:16,245 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 103 selfloop transitions, 36 changer transitions 6/145 dead transitions. [2023-01-28 08:47:16,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1456 flow [2023-01-28 08:47:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1203 transitions. [2023-01-28 08:47:16,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3260162601626016 [2023-01-28 08:47:16,247 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1203 transitions. [2023-01-28 08:47:16,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1203 transitions. [2023-01-28 08:47:16,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:16,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1203 transitions. [2023-01-28 08:47:16,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.66666666666666) internal successors, (1203), 9 states have internal predecessors, (1203), 0 states have call successors, (0), 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 08:47:16,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:16,251 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:16,251 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 810 flow. Second operand 9 states and 1203 transitions. [2023-01-28 08:47:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 1456 flow [2023-01-28 08:47:16,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 145 transitions, 1340 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-01-28 08:47:16,272 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 958 flow [2023-01-28 08:47:16,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-01-28 08:47:16,273 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-01-28 08:47:16,273 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 958 flow [2023-01-28 08:47:16,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 08:47:16,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:16,274 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:16,280 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 08:47:16,478 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,SelfDestructingSolverStorable16 [2023-01-28 08:47:16,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:16,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash 966752974, now seen corresponding path program 13 times [2023-01-28 08:47:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981695978] [2023-01-28 08:47:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981695978] [2023-01-28 08:47:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981695978] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149623479] [2023-01-28 08:47:17,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 08:47:17,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:17,286 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 08:47:17,287 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 08:47:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:17,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 08:47:17,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:47:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:47:17,689 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 08:47:17,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-28 08:47:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:17,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:17,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149623479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:17,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:17,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-01-28 08:47:17,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480439375] [2023-01-28 08:47:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:17,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:17,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:17,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-01-28 08:47:17,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-28 08:47:17,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 958 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 08:47:17,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:17,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-28 08:47:17,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:18,334 INFO L130 PetriNetUnfolder]: 418/751 cut-off events. [2023-01-28 08:47:18,334 INFO L131 PetriNetUnfolder]: For 3276/3276 co-relation queries the response was YES. [2023-01-28 08:47:18,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 751 events. 418/751 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3262 event pairs, 58 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 3464. Up to 269 conditions per place. [2023-01-28 08:47:18,338 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 93 selfloop transitions, 37 changer transitions 11/141 dead transitions. [2023-01-28 08:47:18,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1448 flow [2023-01-28 08:47:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1198 transitions. [2023-01-28 08:47:18,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32466124661246615 [2023-01-28 08:47:18,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1198 transitions. [2023-01-28 08:47:18,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1198 transitions. [2023-01-28 08:47:18,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:18,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1198 transitions. [2023-01-28 08:47:18,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 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 08:47:18,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:18,344 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:18,344 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 958 flow. Second operand 9 states and 1198 transitions. [2023-01-28 08:47:18,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1448 flow [2023-01-28 08:47:18,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 1404 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:18,356 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 995 flow [2023-01-28 08:47:18,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-01-28 08:47:18,357 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-01-28 08:47:18,357 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 995 flow [2023-01-28 08:47:18,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 08:47:18,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:18,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:18,362 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 08:47:18,562 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,SelfDestructingSolverStorable17 [2023-01-28 08:47:18,562 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:18,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash -852520374, now seen corresponding path program 14 times [2023-01-28 08:47:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829371737] [2023-01-28 08:47:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829371737] [2023-01-28 08:47:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829371737] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458733566] [2023-01-28 08:47:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:18,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:18,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:18,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:18,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 995 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:18,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:18,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:18,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:19,285 INFO L130 PetriNetUnfolder]: 521/932 cut-off events. [2023-01-28 08:47:19,286 INFO L131 PetriNetUnfolder]: For 4480/4480 co-relation queries the response was YES. [2023-01-28 08:47:19,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 932 events. 521/932 cut-off events. For 4480/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4244 event pairs, 79 based on Foata normal form. 7/939 useless extension candidates. Maximal degree in co-relation 4292. Up to 304 conditions per place. [2023-01-28 08:47:19,291 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 130 selfloop transitions, 52 changer transitions 6/188 dead transitions. [2023-01-28 08:47:19,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1925 flow [2023-01-28 08:47:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:47:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:47:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1966 transitions. [2023-01-28 08:47:19,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425087108013937 [2023-01-28 08:47:19,293 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1966 transitions. [2023-01-28 08:47:19,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1966 transitions. [2023-01-28 08:47:19,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:19,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1966 transitions. [2023-01-28 08:47:19,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.42857142857142) internal successors, (1966), 14 states have internal predecessors, (1966), 0 states have call successors, (0), 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 08:47:19,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:19,299 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:19,299 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 995 flow. Second operand 14 states and 1966 transitions. [2023-01-28 08:47:19,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1925 flow [2023-01-28 08:47:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 188 transitions, 1834 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 08:47:19,312 INFO L231 Difference]: Finished difference. Result has 116 places, 122 transitions, 1387 flow [2023-01-28 08:47:19,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1387, PETRI_PLACES=116, PETRI_TRANSITIONS=122} [2023-01-28 08:47:19,313 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 90 predicate places. [2023-01-28 08:47:19,313 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 122 transitions, 1387 flow [2023-01-28 08:47:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:19,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:19,313 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:19,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 08:47:19,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:19,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash 683574298, now seen corresponding path program 15 times [2023-01-28 08:47:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828034744] [2023-01-28 08:47:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:19,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:19,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:19,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828034744] [2023-01-28 08:47:19,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828034744] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:19,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:19,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:47:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621388361] [2023-01-28 08:47:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:47:19,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-28 08:47:19,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 1387 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 08:47:19,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:19,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-28 08:47:19,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:20,256 INFO L130 PetriNetUnfolder]: 517/934 cut-off events. [2023-01-28 08:47:20,256 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-01-28 08:47:20,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 934 events. 517/934 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4315 event pairs, 82 based on Foata normal form. 5/939 useless extension candidates. Maximal degree in co-relation 4608. Up to 173 conditions per place. [2023-01-28 08:47:20,262 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 103 selfloop transitions, 63 changer transitions 14/180 dead transitions. [2023-01-28 08:47:20,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 2040 flow [2023-01-28 08:47:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:47:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:47:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1719 transitions. [2023-01-28 08:47:20,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225140712945591 [2023-01-28 08:47:20,264 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1719 transitions. [2023-01-28 08:47:20,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1719 transitions. [2023-01-28 08:47:20,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:20,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1719 transitions. [2023-01-28 08:47:20,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 0 states have call successors, (0), 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 08:47:20,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:47:20,270 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:47:20,270 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 1387 flow. Second operand 13 states and 1719 transitions. [2023-01-28 08:47:20,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 2040 flow [2023-01-28 08:47:20,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 180 transitions, 1956 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:20,290 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 1455 flow [2023-01-28 08:47:20,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1455, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2023-01-28 08:47:20,291 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2023-01-28 08:47:20,291 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 1455 flow [2023-01-28 08:47:20,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 08:47:20,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:20,291 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:20,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 08:47:20,291 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:20,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1934235582, now seen corresponding path program 16 times [2023-01-28 08:47:20,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:20,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630400294] [2023-01-28 08:47:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:20,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630400294] [2023-01-28 08:47:20,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630400294] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:20,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:20,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:47:20,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028068109] [2023-01-28 08:47:20,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:20,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:47:20,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:47:20,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 1455 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 08:47:20,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:20,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:47:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:21,115 INFO L130 PetriNetUnfolder]: 504/923 cut-off events. [2023-01-28 08:47:21,115 INFO L131 PetriNetUnfolder]: For 5917/5917 co-relation queries the response was YES. [2023-01-28 08:47:21,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 923 events. 504/923 cut-off events. For 5917/5917 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4309 event pairs, 71 based on Foata normal form. 7/930 useless extension candidates. Maximal degree in co-relation 4556. Up to 239 conditions per place. [2023-01-28 08:47:21,120 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 104 selfloop transitions, 72 changer transitions 6/182 dead transitions. [2023-01-28 08:47:21,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 2087 flow [2023-01-28 08:47:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 08:47:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 08:47:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2034 transitions. [2023-01-28 08:47:21,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307317073170732 [2023-01-28 08:47:21,123 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2034 transitions. [2023-01-28 08:47:21,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2034 transitions. [2023-01-28 08:47:21,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:21,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2034 transitions. [2023-01-28 08:47:21,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.6) internal successors, (2034), 15 states have internal predecessors, (2034), 0 states have call successors, (0), 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 08:47:21,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 08:47:21,129 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 08:47:21,129 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 1455 flow. Second operand 15 states and 2034 transitions. [2023-01-28 08:47:21,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 2087 flow [2023-01-28 08:47:21,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 182 transitions, 1968 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-01-28 08:47:21,148 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 1593 flow [2023-01-28 08:47:21,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1593, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2023-01-28 08:47:21,148 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2023-01-28 08:47:21,148 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 1593 flow [2023-01-28 08:47:21,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 08:47:21,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:21,149 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 08:47:21,149 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:21,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 472448766, now seen corresponding path program 17 times [2023-01-28 08:47:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401217208] [2023-01-28 08:47:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401217208] [2023-01-28 08:47:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401217208] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:21,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:21,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485850565] [2023-01-28 08:47:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:21,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:21,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:21,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:21,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:21,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 1593 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:21,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:21,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:21,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:21,908 INFO L130 PetriNetUnfolder]: 502/921 cut-off events. [2023-01-28 08:47:21,909 INFO L131 PetriNetUnfolder]: For 5855/5855 co-relation queries the response was YES. [2023-01-28 08:47:21,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 921 events. 502/921 cut-off events. For 5855/5855 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4271 event pairs, 79 based on Foata normal form. 1/922 useless extension candidates. Maximal degree in co-relation 4757. Up to 301 conditions per place. [2023-01-28 08:47:21,914 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 131 selfloop transitions, 49 changer transitions 9/189 dead transitions. [2023-01-28 08:47:21,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 189 transitions, 2217 flow [2023-01-28 08:47:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:47:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:47:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1963 transitions. [2023-01-28 08:47:21,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34198606271777005 [2023-01-28 08:47:21,916 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1963 transitions. [2023-01-28 08:47:21,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1963 transitions. [2023-01-28 08:47:21,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:21,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1963 transitions. [2023-01-28 08:47:21,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.21428571428572) internal successors, (1963), 14 states have internal predecessors, (1963), 0 states have call successors, (0), 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 08:47:21,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:21,922 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:21,922 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 1593 flow. Second operand 14 states and 1963 transitions. [2023-01-28 08:47:21,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 189 transitions, 2217 flow [2023-01-28 08:47:21,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 189 transitions, 2094 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-28 08:47:21,942 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1547 flow [2023-01-28 08:47:21,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1547, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2023-01-28 08:47:21,943 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2023-01-28 08:47:21,943 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1547 flow [2023-01-28 08:47:21,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:21,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:21,943 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:21,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 08:47:21,944 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:21,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1596096490, now seen corresponding path program 18 times [2023-01-28 08:47:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:21,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662982332] [2023-01-28 08:47:21,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:21,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662982332] [2023-01-28 08:47:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662982332] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553765032] [2023-01-28 08:47:22,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:47:22,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:22,625 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 08:47:22,626 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 08:47:22,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 08:47:22,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 08:47:22,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:23,084 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 08:47:23,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-01-28 08:47:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:23,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553765032] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 08:47:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064628064] [2023-01-28 08:47:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-01-28 08:47:23,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:23,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:23,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:23,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:23,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:23,678 INFO L130 PetriNetUnfolder]: 507/940 cut-off events. [2023-01-28 08:47:23,679 INFO L131 PetriNetUnfolder]: For 5653/5653 co-relation queries the response was YES. [2023-01-28 08:47:23,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 940 events. 507/940 cut-off events. For 5653/5653 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4477 event pairs, 87 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 4834. Up to 386 conditions per place. [2023-01-28 08:47:23,684 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 127 selfloop transitions, 45 changer transitions 7/179 dead transitions. [2023-01-28 08:47:23,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 179 transitions, 2181 flow [2023-01-28 08:47:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:47:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:47:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-01-28 08:47:23,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3426829268292683 [2023-01-28 08:47:23,687 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-01-28 08:47:23,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-01-28 08:47:23,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:23,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-01-28 08:47:23,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 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 08:47:23,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:47:23,691 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:47:23,691 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1547 flow. Second operand 10 states and 1405 transitions. [2023-01-28 08:47:23,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 179 transitions, 2181 flow [2023-01-28 08:47:23,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 179 transitions, 2067 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-01-28 08:47:23,713 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 1613 flow [2023-01-28 08:47:23,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2023-01-28 08:47:23,713 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2023-01-28 08:47:23,713 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1613 flow [2023-01-28 08:47:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:23,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:23,714 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:23,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:23,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 08:47:23,918 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:23,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1486136962, now seen corresponding path program 19 times [2023-01-28 08:47:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:23,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136617435] [2023-01-28 08:47:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:24,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136617435] [2023-01-28 08:47:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136617435] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397734951] [2023-01-28 08:47:24,526 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 08:47:24,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:24,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:24,527 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:24,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 08:47:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 08:47:24,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:24,949 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-28 08:47:24,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-01-28 08:47:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:25,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397734951] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-28 08:47:25,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3009971] [2023-01-28 08:47:25,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:25,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-01-28 08:47:25,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:25,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:25,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:25,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:25,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:25,402 INFO L130 PetriNetUnfolder]: 510/949 cut-off events. [2023-01-28 08:47:25,402 INFO L131 PetriNetUnfolder]: For 5817/5817 co-relation queries the response was YES. [2023-01-28 08:47:25,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 949 events. 510/949 cut-off events. For 5817/5817 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4558 event pairs, 87 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 4874. Up to 400 conditions per place. [2023-01-28 08:47:25,407 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 121 selfloop transitions, 45 changer transitions 7/173 dead transitions. [2023-01-28 08:47:25,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 173 transitions, 2141 flow [2023-01-28 08:47:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1274 transitions. [2023-01-28 08:47:25,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3452574525745257 [2023-01-28 08:47:25,409 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1274 transitions. [2023-01-28 08:47:25,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1274 transitions. [2023-01-28 08:47:25,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:25,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1274 transitions. [2023-01-28 08:47:25,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.55555555555554) internal successors, (1274), 9 states have internal predecessors, (1274), 0 states have call successors, (0), 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 08:47:25,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:25,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:25,413 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 1613 flow. Second operand 9 states and 1274 transitions. [2023-01-28 08:47:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 173 transitions, 2141 flow [2023-01-28 08:47:25,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 173 transitions, 2116 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:25,434 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 1707 flow [2023-01-28 08:47:25,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2023-01-28 08:47:25,435 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 113 predicate places. [2023-01-28 08:47:25,435 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 1707 flow [2023-01-28 08:47:25,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:25,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:25,435 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:25,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 08:47:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 08:47:25,639 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:25,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2108337346, now seen corresponding path program 20 times [2023-01-28 08:47:25,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:25,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553933344] [2023-01-28 08:47:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:25,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:25,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553933344] [2023-01-28 08:47:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553933344] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:25,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:47:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218168925] [2023-01-28 08:47:25,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:25,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:47:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:47:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:25,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:25,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 1707 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:25,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:25,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:25,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:26,412 INFO L130 PetriNetUnfolder]: 537/980 cut-off events. [2023-01-28 08:47:26,412 INFO L131 PetriNetUnfolder]: For 7209/7209 co-relation queries the response was YES. [2023-01-28 08:47:26,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5344 conditions, 980 events. 537/980 cut-off events. For 7209/7209 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4620 event pairs, 79 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 5276. Up to 297 conditions per place. [2023-01-28 08:47:26,417 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 136 selfloop transitions, 61 changer transitions 7/204 dead transitions. [2023-01-28 08:47:26,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 204 transitions, 2493 flow [2023-01-28 08:47:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 08:47:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 08:47:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2236 transitions. [2023-01-28 08:47:26,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408536585365854 [2023-01-28 08:47:26,420 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2236 transitions. [2023-01-28 08:47:26,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2236 transitions. [2023-01-28 08:47:26,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:26,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2236 transitions. [2023-01-28 08:47:26,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.75) internal successors, (2236), 16 states have internal predecessors, (2236), 0 states have call successors, (0), 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 08:47:26,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 08:47:26,426 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 08:47:26,426 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 1707 flow. Second operand 16 states and 2236 transitions. [2023-01-28 08:47:26,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 204 transitions, 2493 flow [2023-01-28 08:47:26,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 204 transitions, 2388 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-01-28 08:47:26,447 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 1893 flow [2023-01-28 08:47:26,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1893, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2023-01-28 08:47:26,448 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 126 predicate places. [2023-01-28 08:47:26,448 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 1893 flow [2023-01-28 08:47:26,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 08:47:26,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:26,448 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:26,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 08:47:26,448 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:26,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 798304752, now seen corresponding path program 21 times [2023-01-28 08:47:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823290233] [2023-01-28 08:47:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:26,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823290233] [2023-01-28 08:47:26,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823290233] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:26,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:26,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:47:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679980851] [2023-01-28 08:47:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:26,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:26,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:26,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:47:26,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:47:26,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 1893 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 08:47:26,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:26,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:47:26,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:27,268 INFO L130 PetriNetUnfolder]: 535/970 cut-off events. [2023-01-28 08:47:27,268 INFO L131 PetriNetUnfolder]: For 7617/7617 co-relation queries the response was YES. [2023-01-28 08:47:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 970 events. 535/970 cut-off events. For 7617/7617 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4545 event pairs, 67 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 5521. Up to 255 conditions per place. [2023-01-28 08:47:27,272 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 103 selfloop transitions, 77 changer transitions 8/188 dead transitions. [2023-01-28 08:47:27,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 2462 flow [2023-01-28 08:47:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 08:47:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 08:47:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2026 transitions. [2023-01-28 08:47:27,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32943089430894307 [2023-01-28 08:47:27,275 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2026 transitions. [2023-01-28 08:47:27,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2026 transitions. [2023-01-28 08:47:27,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:27,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2026 transitions. [2023-01-28 08:47:27,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.06666666666666) internal successors, (2026), 15 states have internal predecessors, (2026), 0 states have call successors, (0), 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 08:47:27,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 08:47:27,280 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 08:47:27,281 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 1893 flow. Second operand 15 states and 2026 transitions. [2023-01-28 08:47:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 2462 flow [2023-01-28 08:47:27,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2382 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-28 08:47:27,301 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1936 flow [2023-01-28 08:47:27,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1936, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2023-01-28 08:47:27,302 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2023-01-28 08:47:27,302 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1936 flow [2023-01-28 08:47:27,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 08:47:27,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:27,302 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:27,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 08:47:27,302 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:27,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash -646550530, now seen corresponding path program 22 times [2023-01-28 08:47:27,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:27,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159269047] [2023-01-28 08:47:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:27,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:27,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159269047] [2023-01-28 08:47:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159269047] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:27,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:27,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:47:27,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142044702] [2023-01-28 08:47:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:27,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:47:27,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:47:27,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 08:47:27,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:27,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:47:27,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:28,191 INFO L130 PetriNetUnfolder]: 530/953 cut-off events. [2023-01-28 08:47:28,191 INFO L131 PetriNetUnfolder]: For 7831/7831 co-relation queries the response was YES. [2023-01-28 08:47:28,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5674 conditions, 953 events. 530/953 cut-off events. For 7831/7831 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4341 event pairs, 24 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 5593. Up to 362 conditions per place. [2023-01-28 08:47:28,195 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 111 selfloop transitions, 67 changer transitions 7/185 dead transitions. [2023-01-28 08:47:28,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 185 transitions, 2546 flow [2023-01-28 08:47:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:47:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:47:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2023-01-28 08:47:28,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3302063789868668 [2023-01-28 08:47:28,197 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2023-01-28 08:47:28,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2023-01-28 08:47:28,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:28,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2023-01-28 08:47:28,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.3846153846154) internal successors, (1760), 13 states have internal predecessors, (1760), 0 states have call successors, (0), 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 08:47:28,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:47:28,202 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:47:28,202 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1936 flow. Second operand 13 states and 1760 transitions. [2023-01-28 08:47:28,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 185 transitions, 2546 flow [2023-01-28 08:47:28,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 185 transitions, 2348 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-28 08:47:28,224 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1931 flow [2023-01-28 08:47:28,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1931, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2023-01-28 08:47:28,225 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 125 predicate places. [2023-01-28 08:47:28,225 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1931 flow [2023-01-28 08:47:28,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 08:47:28,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:28,225 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 08:47:28,225 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:28,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -840236614, now seen corresponding path program 1 times [2023-01-28 08:47:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434860757] [2023-01-28 08:47:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:28,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434860757] [2023-01-28 08:47:28,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434860757] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:28,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:28,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 08:47:28,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985791166] [2023-01-28 08:47:28,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:28,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 08:47:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 08:47:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:28,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 08:47:28,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1931 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:28,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:28,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 08:47:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:28,700 INFO L130 PetriNetUnfolder]: 566/1008 cut-off events. [2023-01-28 08:47:28,700 INFO L131 PetriNetUnfolder]: For 8758/8758 co-relation queries the response was YES. [2023-01-28 08:47:28,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1008 events. 566/1008 cut-off events. For 8758/8758 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4673 event pairs, 117 based on Foata normal form. 4/1012 useless extension candidates. Maximal degree in co-relation 6011. Up to 424 conditions per place. [2023-01-28 08:47:28,707 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 128 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2023-01-28 08:47:28,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 183 transitions, 2702 flow [2023-01-28 08:47:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1372 transitions. [2023-01-28 08:47:28,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37181571815718156 [2023-01-28 08:47:28,708 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1372 transitions. [2023-01-28 08:47:28,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1372 transitions. [2023-01-28 08:47:28,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:28,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1372 transitions. [2023-01-28 08:47:28,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.44444444444446) internal successors, (1372), 9 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:47:28,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:28,712 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:28,712 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1931 flow. Second operand 9 states and 1372 transitions. [2023-01-28 08:47:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 183 transitions, 2702 flow [2023-01-28 08:47:28,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 183 transitions, 2530 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-28 08:47:28,738 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 2020 flow [2023-01-28 08:47:28,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2023-01-28 08:47:28,742 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 119 predicate places. [2023-01-28 08:47:28,742 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 2020 flow [2023-01-28 08:47:28,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:28,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:28,743 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:28,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 08:47:28,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:28,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1320325120, now seen corresponding path program 2 times [2023-01-28 08:47:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:28,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137008566] [2023-01-28 08:47:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:28,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137008566] [2023-01-28 08:47:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137008566] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:28,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 08:47:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525505889] [2023-01-28 08:47:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 08:47:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 08:47:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:28,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 08:47:28,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 2020 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:28,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:28,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 08:47:28,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:29,220 INFO L130 PetriNetUnfolder]: 572/1018 cut-off events. [2023-01-28 08:47:29,220 INFO L131 PetriNetUnfolder]: For 7910/7910 co-relation queries the response was YES. [2023-01-28 08:47:29,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 1018 events. 572/1018 cut-off events. For 7910/7910 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4707 event pairs, 109 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 5900. Up to 405 conditions per place. [2023-01-28 08:47:29,227 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 131 selfloop transitions, 57 changer transitions 0/188 dead transitions. [2023-01-28 08:47:29,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 188 transitions, 2686 flow [2023-01-28 08:47:29,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:29,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1375 transitions. [2023-01-28 08:47:29,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37262872628726285 [2023-01-28 08:47:29,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1375 transitions. [2023-01-28 08:47:29,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1375 transitions. [2023-01-28 08:47:29,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:29,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1375 transitions. [2023-01-28 08:47:29,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.77777777777777) internal successors, (1375), 9 states have internal predecessors, (1375), 0 states have call successors, (0), 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 08:47:29,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:29,232 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:29,232 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 2020 flow. Second operand 9 states and 1375 transitions. [2023-01-28 08:47:29,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 188 transitions, 2686 flow [2023-01-28 08:47:29,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2657 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-01-28 08:47:29,258 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 2207 flow [2023-01-28 08:47:29,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2207, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2023-01-28 08:47:29,259 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2023-01-28 08:47:29,260 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 2207 flow [2023-01-28 08:47:29,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:29,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:29,260 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:29,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 08:47:29,260 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:29,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1989493530, now seen corresponding path program 3 times [2023-01-28 08:47:29,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:29,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838971007] [2023-01-28 08:47:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838971007] [2023-01-28 08:47:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838971007] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 08:47:29,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712569058] [2023-01-28 08:47:29,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 08:47:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 08:47:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:29,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 08:47:29,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 2207 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:29,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:29,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 08:47:29,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:29,727 INFO L130 PetriNetUnfolder]: 556/988 cut-off events. [2023-01-28 08:47:29,727 INFO L131 PetriNetUnfolder]: For 7914/7914 co-relation queries the response was YES. [2023-01-28 08:47:29,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 988 events. 556/988 cut-off events. For 7914/7914 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4505 event pairs, 91 based on Foata normal form. 4/992 useless extension candidates. Maximal degree in co-relation 5902. Up to 308 conditions per place. [2023-01-28 08:47:29,731 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 146 selfloop transitions, 63 changer transitions 2/211 dead transitions. [2023-01-28 08:47:29,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 211 transitions, 3101 flow [2023-01-28 08:47:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1385 transitions. [2023-01-28 08:47:29,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37533875338753386 [2023-01-28 08:47:29,742 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1385 transitions. [2023-01-28 08:47:29,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1385 transitions. [2023-01-28 08:47:29,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:29,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1385 transitions. [2023-01-28 08:47:29,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.88888888888889) internal successors, (1385), 9 states have internal predecessors, (1385), 0 states have call successors, (0), 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 08:47:29,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:29,745 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:29,745 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 2207 flow. Second operand 9 states and 1385 transitions. [2023-01-28 08:47:29,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 211 transitions, 3101 flow [2023-01-28 08:47:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 211 transitions, 3072 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 08:47:29,769 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 2445 flow [2023-01-28 08:47:29,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2445, PETRI_PLACES=161, PETRI_TRANSITIONS=162} [2023-01-28 08:47:29,769 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2023-01-28 08:47:29,769 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 2445 flow [2023-01-28 08:47:29,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:29,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:29,770 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-28 08:47:29,770 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:29,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2037644614, now seen corresponding path program 4 times [2023-01-28 08:47:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068821913] [2023-01-28 08:47:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068821913] [2023-01-28 08:47:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068821913] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:29,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:29,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 08:47:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644231928] [2023-01-28 08:47:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 08:47:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 08:47:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:29,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-28 08:47:29,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 2445 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:29,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:29,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-28 08:47:29,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:30,231 INFO L130 PetriNetUnfolder]: 596/1058 cut-off events. [2023-01-28 08:47:30,231 INFO L131 PetriNetUnfolder]: For 10084/10084 co-relation queries the response was YES. [2023-01-28 08:47:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 1058 events. 596/1058 cut-off events. For 10084/10084 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4895 event pairs, 55 based on Foata normal form. 4/1062 useless extension candidates. Maximal degree in co-relation 6551. Up to 475 conditions per place. [2023-01-28 08:47:30,237 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 183 selfloop transitions, 34 changer transitions 4/221 dead transitions. [2023-01-28 08:47:30,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 221 transitions, 3441 flow [2023-01-28 08:47:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 08:47:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 08:47:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1079 transitions. [2023-01-28 08:47:30,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3759581881533101 [2023-01-28 08:47:30,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1079 transitions. [2023-01-28 08:47:30,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1079 transitions. [2023-01-28 08:47:30,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:30,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1079 transitions. [2023-01-28 08:47:30,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.14285714285714) internal successors, (1079), 7 states have internal predecessors, (1079), 0 states have call successors, (0), 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 08:47:30,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 08:47:30,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 08:47:30,253 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 2445 flow. Second operand 7 states and 1079 transitions. [2023-01-28 08:47:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 221 transitions, 3441 flow [2023-01-28 08:47:30,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 221 transitions, 3351 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-28 08:47:30,285 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 2584 flow [2023-01-28 08:47:30,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2584, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2023-01-28 08:47:30,285 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2023-01-28 08:47:30,285 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 2584 flow [2023-01-28 08:47:30,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 08:47:30,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:30,286 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:30,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 08:47:30,286 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:30,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1323057116, now seen corresponding path program 5 times [2023-01-28 08:47:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767310362] [2023-01-28 08:47:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:30,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767310362] [2023-01-28 08:47:30,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767310362] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:30,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128635244] [2023-01-28 08:47:30,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:47:30,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:30,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:30,488 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:30,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 08:47:30,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:47:30,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 08:47:30,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:30,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:47:30,835 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:47:30,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:47:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:30,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128635244] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:47:30,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:47:30,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2023-01-28 08:47:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997786954] [2023-01-28 08:47:30,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:47:30,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 08:47:30,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 08:47:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-01-28 08:47:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 410 [2023-01-28 08:47:30,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 2584 flow. Second operand has 16 states, 16 states have (on average 143.5) internal successors, (2296), 16 states have internal predecessors, (2296), 0 states have call successors, (0), 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 08:47:30,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:30,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 410 [2023-01-28 08:47:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:31,305 INFO L130 PetriNetUnfolder]: 615/1095 cut-off events. [2023-01-28 08:47:31,306 INFO L131 PetriNetUnfolder]: For 10651/10651 co-relation queries the response was YES. [2023-01-28 08:47:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1095 events. 615/1095 cut-off events. For 10651/10651 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5139 event pairs, 103 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 6744. Up to 450 conditions per place. [2023-01-28 08:47:31,312 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 148 selfloop transitions, 81 changer transitions 2/231 dead transitions. [2023-01-28 08:47:31,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 231 transitions, 3553 flow [2023-01-28 08:47:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:47:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:47:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1782 transitions. [2023-01-28 08:47:31,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621951219512195 [2023-01-28 08:47:31,314 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1782 transitions. [2023-01-28 08:47:31,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1782 transitions. [2023-01-28 08:47:31,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:31,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1782 transitions. [2023-01-28 08:47:31,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 148.5) internal successors, (1782), 12 states have internal predecessors, (1782), 0 states have call successors, (0), 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 08:47:31,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:31,318 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:31,318 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 2584 flow. Second operand 12 states and 1782 transitions. [2023-01-28 08:47:31,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 231 transitions, 3553 flow [2023-01-28 08:47:31,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 231 transitions, 3434 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-01-28 08:47:31,353 INFO L231 Difference]: Finished difference. Result has 171 places, 176 transitions, 2779 flow [2023-01-28 08:47:31,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2779, PETRI_PLACES=171, PETRI_TRANSITIONS=176} [2023-01-28 08:47:31,353 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2023-01-28 08:47:31,353 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 176 transitions, 2779 flow [2023-01-28 08:47:31,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.5) internal successors, (2296), 16 states have internal predecessors, (2296), 0 states have call successors, (0), 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 08:47:31,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:31,354 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:31,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 08:47:31,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:31,558 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:31,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 362584518, now seen corresponding path program 6 times [2023-01-28 08:47:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:31,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892052331] [2023-01-28 08:47:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:31,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892052331] [2023-01-28 08:47:31,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892052331] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327653323] [2023-01-28 08:47:31,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:47:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:31,778 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:31,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 08:47:31,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:47:31,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:31,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 08:47:31,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:32,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:47:32,091 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:47:32,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:47:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:32,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327653323] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:47:32,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:47:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 17 [2023-01-28 08:47:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381678269] [2023-01-28 08:47:32,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:47:32,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 08:47:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 08:47:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-01-28 08:47:32,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 410 [2023-01-28 08:47:32,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 176 transitions, 2779 flow. Second operand has 17 states, 17 states have (on average 143.35294117647058) internal successors, (2437), 17 states have internal predecessors, (2437), 0 states have call successors, (0), 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 08:47:32,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:32,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 410 [2023-01-28 08:47:32,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:32,522 INFO L130 PetriNetUnfolder]: 597/1057 cut-off events. [2023-01-28 08:47:32,522 INFO L131 PetriNetUnfolder]: For 10352/10352 co-relation queries the response was YES. [2023-01-28 08:47:32,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6807 conditions, 1057 events. 597/1057 cut-off events. For 10352/10352 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4879 event pairs, 107 based on Foata normal form. 4/1061 useless extension candidates. Maximal degree in co-relation 6693. Up to 494 conditions per place. [2023-01-28 08:47:32,528 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 132 selfloop transitions, 80 changer transitions 0/212 dead transitions. [2023-01-28 08:47:32,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 212 transitions, 3404 flow [2023-01-28 08:47:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 08:47:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 08:47:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1631 transitions. [2023-01-28 08:47:32,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616407982261641 [2023-01-28 08:47:32,529 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1631 transitions. [2023-01-28 08:47:32,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1631 transitions. [2023-01-28 08:47:32,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:32,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1631 transitions. [2023-01-28 08:47:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.27272727272728) internal successors, (1631), 11 states have internal predecessors, (1631), 0 states have call successors, (0), 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 08:47:32,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:47:32,533 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:47:32,533 INFO L175 Difference]: Start difference. First operand has 171 places, 176 transitions, 2779 flow. Second operand 11 states and 1631 transitions. [2023-01-28 08:47:32,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 212 transitions, 3404 flow [2023-01-28 08:47:32,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 212 transitions, 3119 flow, removed 43 selfloop flow, removed 18 redundant places. [2023-01-28 08:47:32,563 INFO L231 Difference]: Finished difference. Result has 159 places, 171 transitions, 2594 flow [2023-01-28 08:47:32,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2594, PETRI_PLACES=159, PETRI_TRANSITIONS=171} [2023-01-28 08:47:32,564 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2023-01-28 08:47:32,564 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 171 transitions, 2594 flow [2023-01-28 08:47:32,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 143.35294117647058) internal successors, (2437), 17 states have internal predecessors, (2437), 0 states have call successors, (0), 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 08:47:32,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:32,564 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:32,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 08:47:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:32,769 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:32,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash -310847470, now seen corresponding path program 7 times [2023-01-28 08:47:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112028351] [2023-01-28 08:47:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:33,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:33,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112028351] [2023-01-28 08:47:33,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112028351] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:33,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 08:47:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816623206] [2023-01-28 08:47:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:33,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 08:47:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 08:47:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:33,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 410 [2023-01-28 08:47:33,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 171 transitions, 2594 flow. Second operand has 9 states, 9 states have (on average 142.22222222222223) internal successors, (1280), 9 states have internal predecessors, (1280), 0 states have call successors, (0), 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 08:47:33,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:33,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 410 [2023-01-28 08:47:33,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:33,276 INFO L130 PetriNetUnfolder]: 581/1027 cut-off events. [2023-01-28 08:47:33,276 INFO L131 PetriNetUnfolder]: For 9034/9034 co-relation queries the response was YES. [2023-01-28 08:47:33,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6372 conditions, 1027 events. 581/1027 cut-off events. For 9034/9034 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4711 event pairs, 112 based on Foata normal form. 4/1031 useless extension candidates. Maximal degree in co-relation 6272. Up to 359 conditions per place. [2023-01-28 08:47:33,281 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 113 selfloop transitions, 80 changer transitions 2/195 dead transitions. [2023-01-28 08:47:33,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 195 transitions, 3134 flow [2023-01-28 08:47:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 08:47:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 08:47:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1329 transitions. [2023-01-28 08:47:33,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36016260162601627 [2023-01-28 08:47:33,283 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1329 transitions. [2023-01-28 08:47:33,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1329 transitions. [2023-01-28 08:47:33,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:33,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1329 transitions. [2023-01-28 08:47:33,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.66666666666666) internal successors, (1329), 9 states have internal predecessors, (1329), 0 states have call successors, (0), 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 08:47:33,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:33,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 08:47:33,286 INFO L175 Difference]: Start difference. First operand has 159 places, 171 transitions, 2594 flow. Second operand 9 states and 1329 transitions. [2023-01-28 08:47:33,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 195 transitions, 3134 flow [2023-01-28 08:47:33,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 3065 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 08:47:33,312 INFO L231 Difference]: Finished difference. Result has 160 places, 167 transitions, 2641 flow [2023-01-28 08:47:33,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2641, PETRI_PLACES=160, PETRI_TRANSITIONS=167} [2023-01-28 08:47:33,312 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2023-01-28 08:47:33,312 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 167 transitions, 2641 flow [2023-01-28 08:47:33,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 142.22222222222223) internal successors, (1280), 9 states have internal predecessors, (1280), 0 states have call successors, (0), 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 08:47:33,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:33,312 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:33,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-28 08:47:33,313 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:33,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2085281639, now seen corresponding path program 1 times [2023-01-28 08:47:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146809049] [2023-01-28 08:47:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146809049] [2023-01-28 08:47:33,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146809049] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:33,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378551420] [2023-01-28 08:47:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:33,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:33,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:33,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 167 transitions, 2641 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:33,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:33,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:33,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:34,363 INFO L130 PetriNetUnfolder]: 779/1372 cut-off events. [2023-01-28 08:47:34,363 INFO L131 PetriNetUnfolder]: For 11657/11657 co-relation queries the response was YES. [2023-01-28 08:47:34,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1372 events. 779/1372 cut-off events. For 11657/11657 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6742 event pairs, 77 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 8195. Up to 227 conditions per place. [2023-01-28 08:47:34,371 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 190 selfloop transitions, 141 changer transitions 5/336 dead transitions. [2023-01-28 08:47:34,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 336 transitions, 4769 flow [2023-01-28 08:47:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:47:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:47:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3045 transitions. [2023-01-28 08:47:34,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375831485587583 [2023-01-28 08:47:34,375 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3045 transitions. [2023-01-28 08:47:34,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3045 transitions. [2023-01-28 08:47:34,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:34,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3045 transitions. [2023-01-28 08:47:34,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 138.4090909090909) internal successors, (3045), 22 states have internal predecessors, (3045), 0 states have call successors, (0), 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 08:47:34,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:34,381 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:34,381 INFO L175 Difference]: Start difference. First operand has 160 places, 167 transitions, 2641 flow. Second operand 22 states and 3045 transitions. [2023-01-28 08:47:34,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 336 transitions, 4769 flow [2023-01-28 08:47:34,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 336 transitions, 4603 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 08:47:34,414 INFO L231 Difference]: Finished difference. Result has 182 places, 227 transitions, 3813 flow [2023-01-28 08:47:34,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3813, PETRI_PLACES=182, PETRI_TRANSITIONS=227} [2023-01-28 08:47:34,414 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 156 predicate places. [2023-01-28 08:47:34,414 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 227 transitions, 3813 flow [2023-01-28 08:47:34,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:34,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:34,415 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 08:47:34,415 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:34,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash 667533083, now seen corresponding path program 2 times [2023-01-28 08:47:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:34,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707572224] [2023-01-28 08:47:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707572224] [2023-01-28 08:47:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707572224] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:47:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056398612] [2023-01-28 08:47:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:47:34,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:34,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 227 transitions, 3813 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:47:34,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:34,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:34,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:35,466 INFO L130 PetriNetUnfolder]: 941/1663 cut-off events. [2023-01-28 08:47:35,467 INFO L131 PetriNetUnfolder]: For 17550/17550 co-relation queries the response was YES. [2023-01-28 08:47:35,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 1663 events. 941/1663 cut-off events. For 17550/17550 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8740 event pairs, 65 based on Foata normal form. 10/1673 useless extension candidates. Maximal degree in co-relation 10651. Up to 269 conditions per place. [2023-01-28 08:47:35,477 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 191 selfloop transitions, 145 changer transitions 12/348 dead transitions. [2023-01-28 08:47:35,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 348 transitions, 5614 flow [2023-01-28 08:47:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 08:47:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 08:47:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2623 transitions. [2023-01-28 08:47:35,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367137355584082 [2023-01-28 08:47:35,482 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2623 transitions. [2023-01-28 08:47:35,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2623 transitions. [2023-01-28 08:47:35,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:35,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2623 transitions. [2023-01-28 08:47:35,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.05263157894737) internal successors, (2623), 19 states have internal predecessors, (2623), 0 states have call successors, (0), 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 08:47:35,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:47:35,487 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:47:35,487 INFO L175 Difference]: Start difference. First operand has 182 places, 227 transitions, 3813 flow. Second operand 19 states and 2623 transitions. [2023-01-28 08:47:35,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 348 transitions, 5614 flow [2023-01-28 08:47:35,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 5459 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:35,540 INFO L231 Difference]: Finished difference. Result has 205 places, 253 transitions, 4485 flow [2023-01-28 08:47:35,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4485, PETRI_PLACES=205, PETRI_TRANSITIONS=253} [2023-01-28 08:47:35,540 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 179 predicate places. [2023-01-28 08:47:35,540 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 253 transitions, 4485 flow [2023-01-28 08:47:35,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:47:35,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:35,541 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:35,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-28 08:47:35,541 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:35,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash 888752717, now seen corresponding path program 3 times [2023-01-28 08:47:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939645942] [2023-01-28 08:47:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:36,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:36,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939645942] [2023-01-28 08:47:36,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939645942] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:36,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:36,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:36,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649384900] [2023-01-28 08:47:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:36,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:36,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:36,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 253 transitions, 4485 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:36,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:36,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:36,887 INFO L130 PetriNetUnfolder]: 1087/1908 cut-off events. [2023-01-28 08:47:36,887 INFO L131 PetriNetUnfolder]: For 20831/20831 co-relation queries the response was YES. [2023-01-28 08:47:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12887 conditions, 1908 events. 1087/1908 cut-off events. For 20831/20831 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10109 event pairs, 119 based on Foata normal form. 3/1911 useless extension candidates. Maximal degree in co-relation 12769. Up to 342 conditions per place. [2023-01-28 08:47:36,900 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 246 selfloop transitions, 172 changer transitions 8/426 dead transitions. [2023-01-28 08:47:36,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 426 transitions, 6572 flow [2023-01-28 08:47:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 08:47:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 08:47:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3617 transitions. [2023-01-28 08:47:36,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393058161350844 [2023-01-28 08:47:36,904 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3617 transitions. [2023-01-28 08:47:36,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3617 transitions. [2023-01-28 08:47:36,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:36,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3617 transitions. [2023-01-28 08:47:36,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 139.1153846153846) internal successors, (3617), 26 states have internal predecessors, (3617), 0 states have call successors, (0), 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 08:47:36,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:47:36,965 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:47:36,966 INFO L175 Difference]: Start difference. First operand has 205 places, 253 transitions, 4485 flow. Second operand 26 states and 3617 transitions. [2023-01-28 08:47:36,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 426 transitions, 6572 flow [2023-01-28 08:47:37,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 426 transitions, 6453 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-01-28 08:47:37,035 INFO L231 Difference]: Finished difference. Result has 231 places, 275 transitions, 5127 flow [2023-01-28 08:47:37,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4386, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5127, PETRI_PLACES=231, PETRI_TRANSITIONS=275} [2023-01-28 08:47:37,036 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2023-01-28 08:47:37,036 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 275 transitions, 5127 flow [2023-01-28 08:47:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:37,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:37,036 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:37,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-28 08:47:37,036 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:37,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1880887905, now seen corresponding path program 4 times [2023-01-28 08:47:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619593378] [2023-01-28 08:47:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619593378] [2023-01-28 08:47:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619593378] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:37,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:37,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199421439] [2023-01-28 08:47:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:37,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:37,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 275 transitions, 5127 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:37,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:37,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:37,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:38,192 INFO L130 PetriNetUnfolder]: 1128/1993 cut-off events. [2023-01-28 08:47:38,192 INFO L131 PetriNetUnfolder]: For 24120/24120 co-relation queries the response was YES. [2023-01-28 08:47:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14386 conditions, 1993 events. 1128/1993 cut-off events. For 24120/24120 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10773 event pairs, 194 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 14261. Up to 580 conditions per place. [2023-01-28 08:47:38,205 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 202 selfloop transitions, 163 changer transitions 6/371 dead transitions. [2023-01-28 08:47:38,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 371 transitions, 6732 flow [2023-01-28 08:47:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:47:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:47:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2023-01-28 08:47:38,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344789356984479 [2023-01-28 08:47:38,209 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2023-01-28 08:47:38,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2023-01-28 08:47:38,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:38,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2023-01-28 08:47:38,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 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 08:47:38,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:38,216 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:38,216 INFO L175 Difference]: Start difference. First operand has 231 places, 275 transitions, 5127 flow. Second operand 22 states and 3017 transitions. [2023-01-28 08:47:38,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 371 transitions, 6732 flow [2023-01-28 08:47:38,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 371 transitions, 6502 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-01-28 08:47:38,306 INFO L231 Difference]: Finished difference. Result has 245 places, 296 transitions, 5749 flow [2023-01-28 08:47:38,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5749, PETRI_PLACES=245, PETRI_TRANSITIONS=296} [2023-01-28 08:47:38,306 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2023-01-28 08:47:38,306 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 296 transitions, 5749 flow [2023-01-28 08:47:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:38,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:38,307 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:38,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-01-28 08:47:38,307 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:38,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1306807323, now seen corresponding path program 5 times [2023-01-28 08:47:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:38,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965663779] [2023-01-28 08:47:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:38,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:38,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:38,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965663779] [2023-01-28 08:47:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965663779] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:38,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:38,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:38,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750115336] [2023-01-28 08:47:38,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:38,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:38,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:38,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 296 transitions, 5749 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:38,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:38,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:38,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:39,483 INFO L130 PetriNetUnfolder]: 1136/2017 cut-off events. [2023-01-28 08:47:39,484 INFO L131 PetriNetUnfolder]: For 26640/26640 co-relation queries the response was YES. [2023-01-28 08:47:39,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14854 conditions, 2017 events. 1136/2017 cut-off events. For 26640/26640 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11075 event pairs, 190 based on Foata normal form. 1/2018 useless extension candidates. Maximal degree in co-relation 14722. Up to 580 conditions per place. [2023-01-28 08:47:39,496 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 206 selfloop transitions, 160 changer transitions 6/372 dead transitions. [2023-01-28 08:47:39,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 372 transitions, 7055 flow [2023-01-28 08:47:39,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 08:47:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 08:47:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2610 transitions. [2023-01-28 08:47:39,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33504492939666236 [2023-01-28 08:47:39,498 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2610 transitions. [2023-01-28 08:47:39,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2610 transitions. [2023-01-28 08:47:39,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:39,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2610 transitions. [2023-01-28 08:47:39,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.3684210526316) internal successors, (2610), 19 states have internal predecessors, (2610), 0 states have call successors, (0), 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 08:47:39,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:47:39,504 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:47:39,504 INFO L175 Difference]: Start difference. First operand has 245 places, 296 transitions, 5749 flow. Second operand 19 states and 2610 transitions. [2023-01-28 08:47:39,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 372 transitions, 7055 flow [2023-01-28 08:47:39,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 372 transitions, 6837 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-01-28 08:47:39,586 INFO L231 Difference]: Finished difference. Result has 258 places, 301 transitions, 6024 flow [2023-01-28 08:47:39,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6024, PETRI_PLACES=258, PETRI_TRANSITIONS=301} [2023-01-28 08:47:39,587 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2023-01-28 08:47:39,587 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 301 transitions, 6024 flow [2023-01-28 08:47:39,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:39,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:39,588 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:39,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-28 08:47:39,588 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:39,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1266843037, now seen corresponding path program 6 times [2023-01-28 08:47:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:39,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465181580] [2023-01-28 08:47:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:39,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:39,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465181580] [2023-01-28 08:47:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465181580] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:39,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:47:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107885043] [2023-01-28 08:47:39,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:47:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:47:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:47:39,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:47:39,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 301 transitions, 6024 flow. Second operand has 12 states, 12 states have (on average 133.75) internal successors, (1605), 12 states have internal predecessors, (1605), 0 states have call successors, (0), 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 08:47:39,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:39,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:47:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:40,977 INFO L130 PetriNetUnfolder]: 1347/2467 cut-off events. [2023-01-28 08:47:40,977 INFO L131 PetriNetUnfolder]: For 31025/31025 co-relation queries the response was YES. [2023-01-28 08:47:40,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17657 conditions, 2467 events. 1347/2467 cut-off events. For 31025/31025 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14384 event pairs, 112 based on Foata normal form. 2/2469 useless extension candidates. Maximal degree in co-relation 17521. Up to 484 conditions per place. [2023-01-28 08:47:40,994 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 218 selfloop transitions, 228 changer transitions 9/455 dead transitions. [2023-01-28 08:47:40,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 455 transitions, 8172 flow [2023-01-28 08:47:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 08:47:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 08:47:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3641 transitions. [2023-01-28 08:47:40,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34155722326454035 [2023-01-28 08:47:40,997 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3641 transitions. [2023-01-28 08:47:40,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3641 transitions. [2023-01-28 08:47:40,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:40,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3641 transitions. [2023-01-28 08:47:41,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 140.03846153846155) internal successors, (3641), 26 states have internal predecessors, (3641), 0 states have call successors, (0), 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 08:47:41,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:47:41,004 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:47:41,004 INFO L175 Difference]: Start difference. First operand has 258 places, 301 transitions, 6024 flow. Second operand 26 states and 3641 transitions. [2023-01-28 08:47:41,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 455 transitions, 8172 flow [2023-01-28 08:47:41,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 455 transitions, 7816 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-01-28 08:47:41,112 INFO L231 Difference]: Finished difference. Result has 275 places, 340 transitions, 6873 flow [2023-01-28 08:47:41,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6873, PETRI_PLACES=275, PETRI_TRANSITIONS=340} [2023-01-28 08:47:41,113 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 249 predicate places. [2023-01-28 08:47:41,113 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 340 transitions, 6873 flow [2023-01-28 08:47:41,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 133.75) internal successors, (1605), 12 states have internal predecessors, (1605), 0 states have call successors, (0), 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 08:47:41,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:41,113 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:41,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-28 08:47:41,113 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:41,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1703155119, now seen corresponding path program 7 times [2023-01-28 08:47:41,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:41,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692978495] [2023-01-28 08:47:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:41,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:41,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692978495] [2023-01-28 08:47:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692978495] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:41,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:41,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059331480] [2023-01-28 08:47:41,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:41,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:41,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:41,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:41,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:41,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 340 transitions, 6873 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:41,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:41,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:41,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:42,432 INFO L130 PetriNetUnfolder]: 1395/2544 cut-off events. [2023-01-28 08:47:42,432 INFO L131 PetriNetUnfolder]: For 35241/35241 co-relation queries the response was YES. [2023-01-28 08:47:42,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19094 conditions, 2544 events. 1395/2544 cut-off events. For 35241/35241 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14857 event pairs, 211 based on Foata normal form. 1/2545 useless extension candidates. Maximal degree in co-relation 18951. Up to 871 conditions per place. [2023-01-28 08:47:42,454 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 248 selfloop transitions, 181 changer transitions 6/435 dead transitions. [2023-01-28 08:47:42,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 435 transitions, 8561 flow [2023-01-28 08:47:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:47:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:47:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3020 transitions. [2023-01-28 08:47:42,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3348115299334812 [2023-01-28 08:47:42,456 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3020 transitions. [2023-01-28 08:47:42,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3020 transitions. [2023-01-28 08:47:42,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:42,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3020 transitions. [2023-01-28 08:47:42,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.27272727272728) internal successors, (3020), 22 states have internal predecessors, (3020), 0 states have call successors, (0), 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 08:47:42,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:42,462 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:42,462 INFO L175 Difference]: Start difference. First operand has 275 places, 340 transitions, 6873 flow. Second operand 22 states and 3020 transitions. [2023-01-28 08:47:42,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 435 transitions, 8561 flow [2023-01-28 08:47:42,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 435 transitions, 8037 flow, removed 61 selfloop flow, removed 20 redundant places. [2023-01-28 08:47:42,608 INFO L231 Difference]: Finished difference. Result has 280 places, 353 transitions, 7083 flow [2023-01-28 08:47:42,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7083, PETRI_PLACES=280, PETRI_TRANSITIONS=353} [2023-01-28 08:47:42,609 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 254 predicate places. [2023-01-28 08:47:42,609 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 353 transitions, 7083 flow [2023-01-28 08:47:42,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:42,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:42,609 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:42,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-28 08:47:42,609 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:42,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:42,610 INFO L85 PathProgramCache]: Analyzing trace with hash 922318553, now seen corresponding path program 8 times [2023-01-28 08:47:42,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:42,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235113367] [2023-01-28 08:47:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235113367] [2023-01-28 08:47:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235113367] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:42,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838527564] [2023-01-28 08:47:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:42,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:42,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:42,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 353 transitions, 7083 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:42,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:42,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:42,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:43,852 INFO L130 PetriNetUnfolder]: 1390/2533 cut-off events. [2023-01-28 08:47:43,852 INFO L131 PetriNetUnfolder]: For 32940/32940 co-relation queries the response was YES. [2023-01-28 08:47:43,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18955 conditions, 2533 events. 1390/2533 cut-off events. For 32940/32940 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14779 event pairs, 216 based on Foata normal form. 3/2536 useless extension candidates. Maximal degree in co-relation 18810. Up to 919 conditions per place. [2023-01-28 08:47:43,873 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 231 selfloop transitions, 175 changer transitions 11/417 dead transitions. [2023-01-28 08:47:43,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 417 transitions, 8236 flow [2023-01-28 08:47:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 08:47:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 08:47:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2742 transitions. [2023-01-28 08:47:43,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33439024390243904 [2023-01-28 08:47:43,876 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2742 transitions. [2023-01-28 08:47:43,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2742 transitions. [2023-01-28 08:47:43,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:43,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2742 transitions. [2023-01-28 08:47:43,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.1) internal successors, (2742), 20 states have internal predecessors, (2742), 0 states have call successors, (0), 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 08:47:43,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 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 08:47:43,882 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 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 08:47:43,882 INFO L175 Difference]: Start difference. First operand has 280 places, 353 transitions, 7083 flow. Second operand 20 states and 2742 transitions. [2023-01-28 08:47:43,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 417 transitions, 8236 flow [2023-01-28 08:47:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 417 transitions, 7950 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-01-28 08:47:44,029 INFO L231 Difference]: Finished difference. Result has 286 places, 349 transitions, 7063 flow [2023-01-28 08:47:44,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7063, PETRI_PLACES=286, PETRI_TRANSITIONS=349} [2023-01-28 08:47:44,030 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2023-01-28 08:47:44,030 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 349 transitions, 7063 flow [2023-01-28 08:47:44,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:44,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:44,031 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:44,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-28 08:47:44,031 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:44,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:44,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2017731595, now seen corresponding path program 9 times [2023-01-28 08:47:44,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:44,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503648296] [2023-01-28 08:47:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:44,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503648296] [2023-01-28 08:47:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503648296] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701820515] [2023-01-28 08:47:44,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:47:44,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:44,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:44,794 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:44,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 08:47:44,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 08:47:44,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:44,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 08:47:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:45,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701820515] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:45,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 28 [2023-01-28 08:47:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877155007] [2023-01-28 08:47:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:45,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:45,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2023-01-28 08:47:45,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:45,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 349 transitions, 7063 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:45,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:45,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:45,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:46,259 INFO L130 PetriNetUnfolder]: 1386/2517 cut-off events. [2023-01-28 08:47:46,260 INFO L131 PetriNetUnfolder]: For 34874/34874 co-relation queries the response was YES. [2023-01-28 08:47:46,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18880 conditions, 2517 events. 1386/2517 cut-off events. For 34874/34874 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14570 event pairs, 214 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 18733. Up to 1256 conditions per place. [2023-01-28 08:47:46,282 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 273 selfloop transitions, 127 changer transitions 5/405 dead transitions. [2023-01-28 08:47:46,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 405 transitions, 8207 flow [2023-01-28 08:47:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:47:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:47:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1938 transitions. [2023-01-28 08:47:46,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3376306620209059 [2023-01-28 08:47:46,285 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1938 transitions. [2023-01-28 08:47:46,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1938 transitions. [2023-01-28 08:47:46,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:46,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1938 transitions. [2023-01-28 08:47:46,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.42857142857142) internal successors, (1938), 14 states have internal predecessors, (1938), 0 states have call successors, (0), 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 08:47:46,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:46,289 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:46,289 INFO L175 Difference]: Start difference. First operand has 286 places, 349 transitions, 7063 flow. Second operand 14 states and 1938 transitions. [2023-01-28 08:47:46,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 405 transitions, 8207 flow [2023-01-28 08:47:46,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 7870 flow, removed 3 selfloop flow, removed 19 redundant places. [2023-01-28 08:47:46,417 INFO L231 Difference]: Finished difference. Result has 278 places, 352 transitions, 7034 flow [2023-01-28 08:47:46,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7034, PETRI_PLACES=278, PETRI_TRANSITIONS=352} [2023-01-28 08:47:46,418 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2023-01-28 08:47:46,418 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 352 transitions, 7034 flow [2023-01-28 08:47:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:46,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:46,418 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:46,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:46,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:46,619 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:46,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1516426929, now seen corresponding path program 10 times [2023-01-28 08:47:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:46,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353605485] [2023-01-28 08:47:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:47,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353605485] [2023-01-28 08:47:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353605485] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140577512] [2023-01-28 08:47:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:47,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:47,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:47,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 352 transitions, 7034 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:47,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:47,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:47,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:48,189 INFO L130 PetriNetUnfolder]: 1552/2839 cut-off events. [2023-01-28 08:47:48,189 INFO L131 PetriNetUnfolder]: For 40089/40089 co-relation queries the response was YES. [2023-01-28 08:47:48,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20996 conditions, 2839 events. 1552/2839 cut-off events. For 40089/40089 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17162 event pairs, 114 based on Foata normal form. 2/2841 useless extension candidates. Maximal degree in co-relation 20850. Up to 583 conditions per place. [2023-01-28 08:47:48,211 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 224 selfloop transitions, 272 changer transitions 5/501 dead transitions. [2023-01-28 08:47:48,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 501 transitions, 9435 flow [2023-01-28 08:47:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 08:47:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 08:47:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3584 transitions. [2023-01-28 08:47:48,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33621013133208255 [2023-01-28 08:47:48,214 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3584 transitions. [2023-01-28 08:47:48,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3584 transitions. [2023-01-28 08:47:48,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:48,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3584 transitions. [2023-01-28 08:47:48,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 137.84615384615384) internal successors, (3584), 26 states have internal predecessors, (3584), 0 states have call successors, (0), 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 08:47:48,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:47:48,222 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:47:48,222 INFO L175 Difference]: Start difference. First operand has 278 places, 352 transitions, 7034 flow. Second operand 26 states and 3584 transitions. [2023-01-28 08:47:48,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 501 transitions, 9435 flow [2023-01-28 08:47:48,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 501 transitions, 9045 flow, removed 20 selfloop flow, removed 17 redundant places. [2023-01-28 08:47:48,371 INFO L231 Difference]: Finished difference. Result has 298 places, 401 transitions, 8347 flow [2023-01-28 08:47:48,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8347, PETRI_PLACES=298, PETRI_TRANSITIONS=401} [2023-01-28 08:47:48,372 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2023-01-28 08:47:48,372 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 401 transitions, 8347 flow [2023-01-28 08:47:48,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:48,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:48,372 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:48,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-28 08:47:48,372 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:48,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1176697371, now seen corresponding path program 11 times [2023-01-28 08:47:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:48,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464381027] [2023-01-28 08:47:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:48,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:48,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464381027] [2023-01-28 08:47:48,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464381027] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:48,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826882711] [2023-01-28 08:47:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:48,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:48,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 401 transitions, 8347 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:48,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:48,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:49,894 INFO L130 PetriNetUnfolder]: 1612/2952 cut-off events. [2023-01-28 08:47:49,894 INFO L131 PetriNetUnfolder]: For 44066/44066 co-relation queries the response was YES. [2023-01-28 08:47:49,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 2952 events. 1612/2952 cut-off events. For 44066/44066 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18027 event pairs, 136 based on Foata normal form. 1/2953 useless extension candidates. Maximal degree in co-relation 22591. Up to 735 conditions per place. [2023-01-28 08:47:49,918 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 251 selfloop transitions, 240 changer transitions 2/493 dead transitions. [2023-01-28 08:47:49,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 493 transitions, 10313 flow [2023-01-28 08:47:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 08:47:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 08:47:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2618 transitions. [2023-01-28 08:47:49,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33607188703465984 [2023-01-28 08:47:49,920 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2618 transitions. [2023-01-28 08:47:49,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2618 transitions. [2023-01-28 08:47:49,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:49,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2618 transitions. [2023-01-28 08:47:49,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.78947368421052) internal successors, (2618), 19 states have internal predecessors, (2618), 0 states have call successors, (0), 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 08:47:49,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:47:49,925 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:47:49,925 INFO L175 Difference]: Start difference. First operand has 298 places, 401 transitions, 8347 flow. Second operand 19 states and 2618 transitions. [2023-01-28 08:47:49,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 493 transitions, 10313 flow [2023-01-28 08:47:50,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 493 transitions, 9984 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-28 08:47:50,099 INFO L231 Difference]: Finished difference. Result has 311 places, 424 transitions, 9155 flow [2023-01-28 08:47:50,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8046, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9155, PETRI_PLACES=311, PETRI_TRANSITIONS=424} [2023-01-28 08:47:50,099 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 285 predicate places. [2023-01-28 08:47:50,099 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 424 transitions, 9155 flow [2023-01-28 08:47:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:50,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:50,100 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-28 08:47:50,100 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:50,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash 195493989, now seen corresponding path program 12 times [2023-01-28 08:47:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505273969] [2023-01-28 08:47:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:50,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505273969] [2023-01-28 08:47:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505273969] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:50,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913453965] [2023-01-28 08:47:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:50,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:50,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 424 transitions, 9155 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:50,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:50,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:50,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:51,535 INFO L130 PetriNetUnfolder]: 1585/2910 cut-off events. [2023-01-28 08:47:51,536 INFO L131 PetriNetUnfolder]: For 46361/46361 co-relation queries the response was YES. [2023-01-28 08:47:51,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22851 conditions, 2910 events. 1585/2910 cut-off events. For 46361/46361 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17842 event pairs, 190 based on Foata normal form. 14/2924 useless extension candidates. Maximal degree in co-relation 22694. Up to 810 conditions per place. [2023-01-28 08:47:51,564 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 229 selfloop transitions, 251 changer transitions 9/489 dead transitions. [2023-01-28 08:47:51,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 489 transitions, 10419 flow [2023-01-28 08:47:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:47:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:47:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3029 transitions. [2023-01-28 08:47:51,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33580931263858094 [2023-01-28 08:47:51,566 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3029 transitions. [2023-01-28 08:47:51,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3029 transitions. [2023-01-28 08:47:51,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:51,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3029 transitions. [2023-01-28 08:47:51,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.6818181818182) internal successors, (3029), 22 states have internal predecessors, (3029), 0 states have call successors, (0), 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 08:47:51,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:51,573 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:51,573 INFO L175 Difference]: Start difference. First operand has 311 places, 424 transitions, 9155 flow. Second operand 22 states and 3029 transitions. [2023-01-28 08:47:51,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 489 transitions, 10419 flow [2023-01-28 08:47:51,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 489 transitions, 10170 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 08:47:51,782 INFO L231 Difference]: Finished difference. Result has 325 places, 416 transitions, 9295 flow [2023-01-28 08:47:51,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8851, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9295, PETRI_PLACES=325, PETRI_TRANSITIONS=416} [2023-01-28 08:47:51,782 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 299 predicate places. [2023-01-28 08:47:51,782 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 416 transitions, 9295 flow [2023-01-28 08:47:51,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:51,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:51,783 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:51,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-28 08:47:51,783 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:51,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash -204890007, now seen corresponding path program 13 times [2023-01-28 08:47:51,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581404747] [2023-01-28 08:47:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:52,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:52,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581404747] [2023-01-28 08:47:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581404747] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:52,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:52,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:52,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054954200] [2023-01-28 08:47:52,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:52,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:52,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:52,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 416 transitions, 9295 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:52,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:52,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:52,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:53,129 INFO L130 PetriNetUnfolder]: 1583/2905 cut-off events. [2023-01-28 08:47:53,130 INFO L131 PetriNetUnfolder]: For 48230/48230 co-relation queries the response was YES. [2023-01-28 08:47:53,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23217 conditions, 2905 events. 1583/2905 cut-off events. For 48230/48230 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17662 event pairs, 115 based on Foata normal form. 3/2908 useless extension candidates. Maximal degree in co-relation 23059. Up to 735 conditions per place. [2023-01-28 08:47:53,157 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 212 selfloop transitions, 270 changer transitions 5/487 dead transitions. [2023-01-28 08:47:53,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 487 transitions, 10805 flow [2023-01-28 08:47:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:47:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:47:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2023-01-28 08:47:53,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343680709534368 [2023-01-28 08:47:53,160 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2023-01-28 08:47:53,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2023-01-28 08:47:53,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:53,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2023-01-28 08:47:53,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.0909090909091) internal successors, (3016), 22 states have internal predecessors, (3016), 0 states have call successors, (0), 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 08:47:53,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:53,166 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:47:53,166 INFO L175 Difference]: Start difference. First operand has 325 places, 416 transitions, 9295 flow. Second operand 22 states and 3016 transitions. [2023-01-28 08:47:53,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 487 transitions, 10805 flow [2023-01-28 08:47:53,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 487 transitions, 10273 flow, removed 15 selfloop flow, removed 19 redundant places. [2023-01-28 08:47:53,372 INFO L231 Difference]: Finished difference. Result has 327 places, 421 transitions, 9474 flow [2023-01-28 08:47:53,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8789, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9474, PETRI_PLACES=327, PETRI_TRANSITIONS=421} [2023-01-28 08:47:53,373 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 301 predicate places. [2023-01-28 08:47:53,373 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 421 transitions, 9474 flow [2023-01-28 08:47:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:53,373 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:53,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-28 08:47:53,374 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:53,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 314959577, now seen corresponding path program 14 times [2023-01-28 08:47:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439101085] [2023-01-28 08:47:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:53,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:53,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439101085] [2023-01-28 08:47:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439101085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:53,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:53,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:53,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447215709] [2023-01-28 08:47:53,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:53,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:53,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 421 transitions, 9474 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:53,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:53,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:54,660 INFO L130 PetriNetUnfolder]: 1580/2894 cut-off events. [2023-01-28 08:47:54,660 INFO L131 PetriNetUnfolder]: For 47247/47247 co-relation queries the response was YES. [2023-01-28 08:47:54,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 2894 events. 1580/2894 cut-off events. For 47247/47247 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17550 event pairs, 212 based on Foata normal form. 3/2897 useless extension candidates. Maximal degree in co-relation 23043. Up to 1103 conditions per place. [2023-01-28 08:47:54,688 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 292 selfloop transitions, 161 changer transitions 13/466 dead transitions. [2023-01-28 08:47:54,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 466 transitions, 10657 flow [2023-01-28 08:47:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:47:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:47:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1929 transitions. [2023-01-28 08:47:54,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3360627177700348 [2023-01-28 08:47:54,690 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1929 transitions. [2023-01-28 08:47:54,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1929 transitions. [2023-01-28 08:47:54,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:54,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1929 transitions. [2023-01-28 08:47:54,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 137.78571428571428) internal successors, (1929), 14 states have internal predecessors, (1929), 0 states have call successors, (0), 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 08:47:54,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:54,694 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:47:54,694 INFO L175 Difference]: Start difference. First operand has 327 places, 421 transitions, 9474 flow. Second operand 14 states and 1929 transitions. [2023-01-28 08:47:54,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 466 transitions, 10657 flow [2023-01-28 08:47:54,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 466 transitions, 10137 flow, removed 5 selfloop flow, removed 19 redundant places. [2023-01-28 08:47:54,891 INFO L231 Difference]: Finished difference. Result has 324 places, 419 transitions, 9234 flow [2023-01-28 08:47:54,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8962, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9234, PETRI_PLACES=324, PETRI_TRANSITIONS=419} [2023-01-28 08:47:54,891 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 298 predicate places. [2023-01-28 08:47:54,891 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 419 transitions, 9234 flow [2023-01-28 08:47:54,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:54,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:54,892 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:54,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-28 08:47:54,892 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:54,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1133666139, now seen corresponding path program 15 times [2023-01-28 08:47:54,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:54,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15811957] [2023-01-28 08:47:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:47:55,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:55,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15811957] [2023-01-28 08:47:55,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15811957] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:55,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512830030] [2023-01-28 08:47:55,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:47:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:55,593 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:55,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 08:47:55,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 08:47:55,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:55,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:47:55,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:56,037 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 08:47:56,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 08:47:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:56,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512830030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:56,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:56,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 27 [2023-01-28 08:47:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871357944] [2023-01-28 08:47:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:56,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2023-01-28 08:47:56,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:56,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 419 transitions, 9234 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:56,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:56,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:56,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:56,885 INFO L130 PetriNetUnfolder]: 1583/2899 cut-off events. [2023-01-28 08:47:56,886 INFO L131 PetriNetUnfolder]: For 47173/47173 co-relation queries the response was YES. [2023-01-28 08:47:56,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23043 conditions, 2899 events. 1583/2899 cut-off events. For 47173/47173 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17648 event pairs, 214 based on Foata normal form. 3/2902 useless extension candidates. Maximal degree in co-relation 22883. Up to 1487 conditions per place. [2023-01-28 08:47:56,907 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 311 selfloop transitions, 136 changer transitions 10/457 dead transitions. [2023-01-28 08:47:56,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 457 transitions, 10481 flow [2023-01-28 08:47:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:47:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:47:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1649 transitions. [2023-01-28 08:47:56,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33516260162601624 [2023-01-28 08:47:56,909 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1649 transitions. [2023-01-28 08:47:56,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1649 transitions. [2023-01-28 08:47:56,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:56,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1649 transitions. [2023-01-28 08:47:56,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 0 states have call successors, (0), 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 08:47:56,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:56,912 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:47:56,912 INFO L175 Difference]: Start difference. First operand has 324 places, 419 transitions, 9234 flow. Second operand 12 states and 1649 transitions. [2023-01-28 08:47:56,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 457 transitions, 10481 flow [2023-01-28 08:47:57,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 457 transitions, 10139 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-01-28 08:47:57,100 INFO L231 Difference]: Finished difference. Result has 321 places, 422 transitions, 9277 flow [2023-01-28 08:47:57,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8904, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9277, PETRI_PLACES=321, PETRI_TRANSITIONS=422} [2023-01-28 08:47:57,100 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 295 predicate places. [2023-01-28 08:47:57,100 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 422 transitions, 9277 flow [2023-01-28 08:47:57,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:57,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:57,101 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:57,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:57,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-28 08:47:57,301 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:57,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash -821144427, now seen corresponding path program 16 times [2023-01-28 08:47:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858195311] [2023-01-28 08:47:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858195311] [2023-01-28 08:47:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858195311] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:57,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:57,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:47:57,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677460380] [2023-01-28 08:47:57,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:57,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:47:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:47:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:47:57,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:47:57,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 422 transitions, 9277 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:57,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:57,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:47:57,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:58,655 INFO L130 PetriNetUnfolder]: 1579/2882 cut-off events. [2023-01-28 08:47:58,656 INFO L131 PetriNetUnfolder]: For 47057/47057 co-relation queries the response was YES. [2023-01-28 08:47:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22877 conditions, 2882 events. 1579/2882 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17435 event pairs, 113 based on Foata normal form. 2/2884 useless extension candidates. Maximal degree in co-relation 22717. Up to 735 conditions per place. [2023-01-28 08:47:58,681 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 231 changer transitions 5/483 dead transitions. [2023-01-28 08:47:58,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 10605 flow [2023-01-28 08:47:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 08:47:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 08:47:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2023-01-28 08:47:58,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.336154949784792 [2023-01-28 08:47:58,683 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2023-01-28 08:47:58,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2023-01-28 08:47:58,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:58,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2023-01-28 08:47:58,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 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 08:47:58,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 08:47:58,689 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 08:47:58,689 INFO L175 Difference]: Start difference. First operand has 321 places, 422 transitions, 9277 flow. Second operand 17 states and 2343 transitions. [2023-01-28 08:47:58,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 10605 flow [2023-01-28 08:47:58,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 483 transitions, 10376 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-01-28 08:47:58,893 INFO L231 Difference]: Finished difference. Result has 328 places, 421 transitions, 9501 flow [2023-01-28 08:47:58,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9501, PETRI_PLACES=328, PETRI_TRANSITIONS=421} [2023-01-28 08:47:58,897 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 302 predicate places. [2023-01-28 08:47:58,897 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 421 transitions, 9501 flow [2023-01-28 08:47:58,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:47:58,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:58,898 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:58,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-28 08:47:58,898 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:47:58,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1523939993, now seen corresponding path program 17 times [2023-01-28 08:47:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:58,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284567085] [2023-01-28 08:47:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:47:59,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:59,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284567085] [2023-01-28 08:47:59,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284567085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:59,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:59,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 08:47:59,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544127093] [2023-01-28 08:47:59,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:59,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 08:47:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 08:47:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-01-28 08:47:59,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 410 [2023-01-28 08:47:59,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 421 transitions, 9501 flow. Second operand has 14 states, 14 states have (on average 123.5) internal successors, (1729), 14 states have internal predecessors, (1729), 0 states have call successors, (0), 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 08:47:59,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:59,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 410 [2023-01-28 08:47:59,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:00,817 INFO L130 PetriNetUnfolder]: 1650/3011 cut-off events. [2023-01-28 08:48:00,818 INFO L131 PetriNetUnfolder]: For 52243/52243 co-relation queries the response was YES. [2023-01-28 08:48:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23982 conditions, 3011 events. 1650/3011 cut-off events. For 52243/52243 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18530 event pairs, 109 based on Foata normal form. 32/3043 useless extension candidates. Maximal degree in co-relation 23824. Up to 1449 conditions per place. [2023-01-28 08:48:00,845 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 295 selfloop transitions, 232 changer transitions 7/534 dead transitions. [2023-01-28 08:48:00,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 534 transitions, 11945 flow [2023-01-28 08:48:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 08:48:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 08:48:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2466 transitions. [2023-01-28 08:48:00,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3165596919127086 [2023-01-28 08:48:00,848 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2466 transitions. [2023-01-28 08:48:00,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2466 transitions. [2023-01-28 08:48:00,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:00,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2466 transitions. [2023-01-28 08:48:00,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 129.78947368421052) internal successors, (2466), 19 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:48:00,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:48:00,853 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:48:00,853 INFO L175 Difference]: Start difference. First operand has 328 places, 421 transitions, 9501 flow. Second operand 19 states and 2466 transitions. [2023-01-28 08:48:00,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 534 transitions, 11945 flow [2023-01-28 08:48:01,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 534 transitions, 11311 flow, removed 4 selfloop flow, removed 20 redundant places. [2023-01-28 08:48:01,081 INFO L231 Difference]: Finished difference. Result has 332 places, 452 transitions, 10277 flow [2023-01-28 08:48:01,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8866, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10277, PETRI_PLACES=332, PETRI_TRANSITIONS=452} [2023-01-28 08:48:01,082 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 306 predicate places. [2023-01-28 08:48:01,082 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 452 transitions, 10277 flow [2023-01-28 08:48:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 123.5) internal successors, (1729), 14 states have internal predecessors, (1729), 0 states have call successors, (0), 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 08:48:01,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:01,082 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:01,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-28 08:48:01,082 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:01,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2078706087, now seen corresponding path program 18 times [2023-01-28 08:48:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:01,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045768856] [2023-01-28 08:48:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:01,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:48:01,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045768856] [2023-01-28 08:48:01,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045768856] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141520925] [2023-01-28 08:48:01,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:48:01,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:01,822 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:01,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 08:48:01,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 08:48:01,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:01,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 08:48:01,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:02,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:48:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:48:02,282 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 08:48:02,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-01-28 08:48:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:02,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141520925] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:02,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:02,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 26 [2023-01-28 08:48:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925422817] [2023-01-28 08:48:02,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:02,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:48:02,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:48:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-01-28 08:48:02,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 410 [2023-01-28 08:48:02,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 452 transitions, 10277 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 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 08:48:02,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:02,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 410 [2023-01-28 08:48:02,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:03,440 INFO L130 PetriNetUnfolder]: 1764/3177 cut-off events. [2023-01-28 08:48:03,441 INFO L131 PetriNetUnfolder]: For 52025/52025 co-relation queries the response was YES. [2023-01-28 08:48:03,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25471 conditions, 3177 events. 1764/3177 cut-off events. For 52025/52025 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19356 event pairs, 184 based on Foata normal form. 5/3182 useless extension candidates. Maximal degree in co-relation 25309. Up to 1545 conditions per place. [2023-01-28 08:48:03,466 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 309 selfloop transitions, 186 changer transitions 11/506 dead transitions. [2023-01-28 08:48:03,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 506 transitions, 11736 flow [2023-01-28 08:48:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:48:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:48:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1343 transitions. [2023-01-28 08:48:03,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275609756097561 [2023-01-28 08:48:03,468 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1343 transitions. [2023-01-28 08:48:03,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1343 transitions. [2023-01-28 08:48:03,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:03,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1343 transitions. [2023-01-28 08:48:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.3) internal successors, (1343), 10 states have internal predecessors, (1343), 0 states have call successors, (0), 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 08:48:03,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:48:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:48:03,471 INFO L175 Difference]: Start difference. First operand has 332 places, 452 transitions, 10277 flow. Second operand 10 states and 1343 transitions. [2023-01-28 08:48:03,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 506 transitions, 11736 flow [2023-01-28 08:48:03,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 506 transitions, 11372 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-01-28 08:48:03,691 INFO L231 Difference]: Finished difference. Result has 334 places, 456 transitions, 10436 flow [2023-01-28 08:48:03,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10436, PETRI_PLACES=334, PETRI_TRANSITIONS=456} [2023-01-28 08:48:03,691 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2023-01-28 08:48:03,692 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 456 transitions, 10436 flow [2023-01-28 08:48:03,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 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 08:48:03,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:03,692 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:03,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:03,897 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:03,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1296520111, now seen corresponding path program 19 times [2023-01-28 08:48:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:03,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554027709] [2023-01-28 08:48:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:04,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:04,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554027709] [2023-01-28 08:48:04,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554027709] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:04,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:04,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:48:04,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750633110] [2023-01-28 08:48:04,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:48:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:48:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:48:04,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:48:04,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 456 transitions, 10436 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:48:04,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:04,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:48:04,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:05,207 INFO L130 PetriNetUnfolder]: 1760/3173 cut-off events. [2023-01-28 08:48:05,207 INFO L131 PetriNetUnfolder]: For 54282/54282 co-relation queries the response was YES. [2023-01-28 08:48:05,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25677 conditions, 3173 events. 1760/3173 cut-off events. For 54282/54282 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19319 event pairs, 124 based on Foata normal form. 1/3174 useless extension candidates. Maximal degree in co-relation 25515. Up to 706 conditions per place. [2023-01-28 08:48:05,236 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 234 selfloop transitions, 307 changer transitions 5/546 dead transitions. [2023-01-28 08:48:05,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 546 transitions, 12286 flow [2023-01-28 08:48:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 08:48:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 08:48:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2621 transitions. [2023-01-28 08:48:05,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33645699614890884 [2023-01-28 08:48:05,238 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2621 transitions. [2023-01-28 08:48:05,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2621 transitions. [2023-01-28 08:48:05,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:05,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2621 transitions. [2023-01-28 08:48:05,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.94736842105263) internal successors, (2621), 19 states have internal predecessors, (2621), 0 states have call successors, (0), 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 08:48:05,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:48:05,243 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:48:05,243 INFO L175 Difference]: Start difference. First operand has 334 places, 456 transitions, 10436 flow. Second operand 19 states and 2621 transitions. [2023-01-28 08:48:05,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 546 transitions, 12286 flow [2023-01-28 08:48:05,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 546 transitions, 11938 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-28 08:48:05,476 INFO L231 Difference]: Finished difference. Result has 345 places, 474 transitions, 11062 flow [2023-01-28 08:48:05,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10107, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11062, PETRI_PLACES=345, PETRI_TRANSITIONS=474} [2023-01-28 08:48:05,477 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 319 predicate places. [2023-01-28 08:48:05,477 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 474 transitions, 11062 flow [2023-01-28 08:48:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:48:05,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:05,477 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-28 08:48:05,477 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:05,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash -305542235, now seen corresponding path program 20 times [2023-01-28 08:48:05,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429061776] [2023-01-28 08:48:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429061776] [2023-01-28 08:48:06,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429061776] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:06,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:06,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 08:48:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979305055] [2023-01-28 08:48:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 08:48:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 08:48:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-01-28 08:48:06,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-28 08:48:06,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 474 transitions, 11062 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 08:48:06,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:06,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-28 08:48:06,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:07,474 INFO L130 PetriNetUnfolder]: 1944/3545 cut-off events. [2023-01-28 08:48:07,474 INFO L131 PetriNetUnfolder]: For 63937/63937 co-relation queries the response was YES. [2023-01-28 08:48:07,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28690 conditions, 3545 events. 1944/3545 cut-off events. For 63937/63937 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 22452 event pairs, 170 based on Foata normal form. 5/3550 useless extension candidates. Maximal degree in co-relation 28526. Up to 598 conditions per place. [2023-01-28 08:48:07,508 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 288 selfloop transitions, 369 changer transitions 8/665 dead transitions. [2023-01-28 08:48:07,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 665 transitions, 14359 flow [2023-01-28 08:48:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 08:48:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 08:48:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3315 transitions. [2023-01-28 08:48:07,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31097560975609756 [2023-01-28 08:48:07,511 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3315 transitions. [2023-01-28 08:48:07,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3315 transitions. [2023-01-28 08:48:07,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:07,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3315 transitions. [2023-01-28 08:48:07,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 127.5) internal successors, (3315), 26 states have internal predecessors, (3315), 0 states have call successors, (0), 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 08:48:07,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:48:07,518 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 08:48:07,518 INFO L175 Difference]: Start difference. First operand has 345 places, 474 transitions, 11062 flow. Second operand 26 states and 3315 transitions. [2023-01-28 08:48:07,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 665 transitions, 14359 flow [2023-01-28 08:48:07,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 665 transitions, 13941 flow, removed 57 selfloop flow, removed 8 redundant places. [2023-01-28 08:48:07,884 INFO L231 Difference]: Finished difference. Result has 372 places, 513 transitions, 12575 flow [2023-01-28 08:48:07,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10746, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12575, PETRI_PLACES=372, PETRI_TRANSITIONS=513} [2023-01-28 08:48:07,885 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2023-01-28 08:48:07,885 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 513 transitions, 12575 flow [2023-01-28 08:48:07,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 08:48:07,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:07,886 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:07,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-28 08:48:07,886 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:07,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 830388595, now seen corresponding path program 21 times [2023-01-28 08:48:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726258678] [2023-01-28 08:48:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:08,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726258678] [2023-01-28 08:48:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726258678] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:08,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 08:48:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297494757] [2023-01-28 08:48:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 08:48:08,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 08:48:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-01-28 08:48:08,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-28 08:48:08,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 513 transitions, 12575 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 08:48:08,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:08,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-28 08:48:08,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:09,953 INFO L130 PetriNetUnfolder]: 1945/3548 cut-off events. [2023-01-28 08:48:09,953 INFO L131 PetriNetUnfolder]: For 69196/69196 co-relation queries the response was YES. [2023-01-28 08:48:09,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30014 conditions, 3548 events. 1945/3548 cut-off events. For 69196/69196 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22491 event pairs, 154 based on Foata normal form. 2/3550 useless extension candidates. Maximal degree in co-relation 29839. Up to 781 conditions per place. [2023-01-28 08:48:09,987 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 243 selfloop transitions, 352 changer transitions 7/602 dead transitions. [2023-01-28 08:48:09,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 602 transitions, 14358 flow [2023-01-28 08:48:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:48:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:48:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2778 transitions. [2023-01-28 08:48:09,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3079822616407982 [2023-01-28 08:48:09,990 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2778 transitions. [2023-01-28 08:48:09,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2778 transitions. [2023-01-28 08:48:09,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:09,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2778 transitions. [2023-01-28 08:48:09,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 126.27272727272727) internal successors, (2778), 22 states have internal predecessors, (2778), 0 states have call successors, (0), 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 08:48:09,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:48:09,996 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:48:09,996 INFO L175 Difference]: Start difference. First operand has 372 places, 513 transitions, 12575 flow. Second operand 22 states and 2778 transitions. [2023-01-28 08:48:09,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 602 transitions, 14358 flow [2023-01-28 08:48:10,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 602 transitions, 13772 flow, removed 87 selfloop flow, removed 13 redundant places. [2023-01-28 08:48:10,346 INFO L231 Difference]: Finished difference. Result has 381 places, 513 transitions, 12805 flow [2023-01-28 08:48:10,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12019, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12805, PETRI_PLACES=381, PETRI_TRANSITIONS=513} [2023-01-28 08:48:10,347 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-28 08:48:10,347 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 513 transitions, 12805 flow [2023-01-28 08:48:10,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 08:48:10,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:10,347 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:10,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-28 08:48:10,347 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:10,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash 327894257, now seen corresponding path program 22 times [2023-01-28 08:48:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739729558] [2023-01-28 08:48:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739729558] [2023-01-28 08:48:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739729558] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:10,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:10,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:48:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469395571] [2023-01-28 08:48:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:48:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:48:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:48:10,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-28 08:48:10,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 513 transitions, 12805 flow. Second operand has 13 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 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 08:48:10,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:10,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-28 08:48:10,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:12,295 INFO L130 PetriNetUnfolder]: 1917/3510 cut-off events. [2023-01-28 08:48:12,295 INFO L131 PetriNetUnfolder]: For 75113/75113 co-relation queries the response was YES. [2023-01-28 08:48:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29738 conditions, 3510 events. 1917/3510 cut-off events. For 75113/75113 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22293 event pairs, 252 based on Foata normal form. 14/3524 useless extension candidates. Maximal degree in co-relation 29566. Up to 1344 conditions per place. [2023-01-28 08:48:12,328 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 308 selfloop transitions, 254 changer transitions 9/571 dead transitions. [2023-01-28 08:48:12,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 571 transitions, 14231 flow [2023-01-28 08:48:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 08:48:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 08:48:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2271 transitions. [2023-01-28 08:48:12,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30772357723577237 [2023-01-28 08:48:12,331 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2271 transitions. [2023-01-28 08:48:12,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2271 transitions. [2023-01-28 08:48:12,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:12,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2271 transitions. [2023-01-28 08:48:12,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.16666666666667) internal successors, (2271), 18 states have internal predecessors, (2271), 0 states have call successors, (0), 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 08:48:12,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 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 08:48:12,336 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 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 08:48:12,336 INFO L175 Difference]: Start difference. First operand has 381 places, 513 transitions, 12805 flow. Second operand 18 states and 2271 transitions. [2023-01-28 08:48:12,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 571 transitions, 14231 flow [2023-01-28 08:48:12,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 571 transitions, 13653 flow, removed 6 selfloop flow, removed 18 redundant places. [2023-01-28 08:48:12,690 INFO L231 Difference]: Finished difference. Result has 381 places, 509 transitions, 12701 flow [2023-01-28 08:48:12,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12168, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12701, PETRI_PLACES=381, PETRI_TRANSITIONS=509} [2023-01-28 08:48:12,690 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-28 08:48:12,690 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 509 transitions, 12701 flow [2023-01-28 08:48:12,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 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 08:48:12,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:12,691 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:12,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-28 08:48:12,691 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:12,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash 411107351, now seen corresponding path program 23 times [2023-01-28 08:48:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815589974] [2023-01-28 08:48:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815589974] [2023-01-28 08:48:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815589974] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:13,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 08:48:13,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906970192] [2023-01-28 08:48:13,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:13,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:48:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:48:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:48:13,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 08:48:13,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 509 transitions, 12701 flow. Second operand has 11 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 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 08:48:13,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:13,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 08:48:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:14,004 INFO L130 PetriNetUnfolder]: 1908/3478 cut-off events. [2023-01-28 08:48:14,004 INFO L131 PetriNetUnfolder]: For 73883/73883 co-relation queries the response was YES. [2023-01-28 08:48:14,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29632 conditions, 3478 events. 1908/3478 cut-off events. For 73883/73883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21827 event pairs, 134 based on Foata normal form. 1/3479 useless extension candidates. Maximal degree in co-relation 29459. Up to 937 conditions per place. [2023-01-28 08:48:14,041 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 247 selfloop transitions, 305 changer transitions 6/558 dead transitions. [2023-01-28 08:48:14,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 558 transitions, 14154 flow [2023-01-28 08:48:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:48:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:48:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1970 transitions. [2023-01-28 08:48:14,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.343205574912892 [2023-01-28 08:48:14,043 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1970 transitions. [2023-01-28 08:48:14,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1970 transitions. [2023-01-28 08:48:14,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:14,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1970 transitions. [2023-01-28 08:48:14,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.71428571428572) internal successors, (1970), 14 states have internal predecessors, (1970), 0 states have call successors, (0), 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 08:48:14,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:48:14,047 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:48:14,047 INFO L175 Difference]: Start difference. First operand has 381 places, 509 transitions, 12701 flow. Second operand 14 states and 1970 transitions. [2023-01-28 08:48:14,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 558 transitions, 14154 flow [2023-01-28 08:48:14,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 558 transitions, 13748 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-01-28 08:48:14,385 INFO L231 Difference]: Finished difference. Result has 381 places, 511 transitions, 13058 flow [2023-01-28 08:48:14,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12301, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13058, PETRI_PLACES=381, PETRI_TRANSITIONS=511} [2023-01-28 08:48:14,386 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-28 08:48:14,386 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 511 transitions, 13058 flow [2023-01-28 08:48:14,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 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 08:48:14,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:14,386 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:14,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-28 08:48:14,387 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:14,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2039877833, now seen corresponding path program 24 times [2023-01-28 08:48:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177891776] [2023-01-28 08:48:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:14,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:14,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:14,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177891776] [2023-01-28 08:48:14,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177891776] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:14,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:14,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:48:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513747040] [2023-01-28 08:48:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:48:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:48:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:48:14,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:48:14,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 511 transitions, 13058 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:48:14,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:14,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:48:14,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:15,939 INFO L130 PetriNetUnfolder]: 1910/3484 cut-off events. [2023-01-28 08:48:15,939 INFO L131 PetriNetUnfolder]: For 75641/75641 co-relation queries the response was YES. [2023-01-28 08:48:15,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30108 conditions, 3484 events. 1910/3484 cut-off events. For 75641/75641 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21909 event pairs, 119 based on Foata normal form. 1/3485 useless extension candidates. Maximal degree in co-relation 29934. Up to 777 conditions per place. [2023-01-28 08:48:15,970 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 337 changer transitions 5/589 dead transitions. [2023-01-28 08:48:15,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 589 transitions, 14776 flow [2023-01-28 08:48:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 08:48:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 08:48:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2630 transitions. [2023-01-28 08:48:15,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337612323491656 [2023-01-28 08:48:15,973 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2630 transitions. [2023-01-28 08:48:15,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2630 transitions. [2023-01-28 08:48:15,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:15,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2630 transitions. [2023-01-28 08:48:15,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.42105263157896) internal successors, (2630), 19 states have internal predecessors, (2630), 0 states have call successors, (0), 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 08:48:15,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:48:15,978 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 08:48:15,978 INFO L175 Difference]: Start difference. First operand has 381 places, 511 transitions, 13058 flow. Second operand 19 states and 2630 transitions. [2023-01-28 08:48:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 589 transitions, 14776 flow [2023-01-28 08:48:16,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 589 transitions, 14339 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-28 08:48:16,307 INFO L231 Difference]: Finished difference. Result has 392 places, 514 transitions, 13401 flow [2023-01-28 08:48:16,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12632, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13401, PETRI_PLACES=392, PETRI_TRANSITIONS=514} [2023-01-28 08:48:16,308 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 366 predicate places. [2023-01-28 08:48:16,308 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 514 transitions, 13401 flow [2023-01-28 08:48:16,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:48:16,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:16,308 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:16,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-01-28 08:48:16,309 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:16,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash -197376943, now seen corresponding path program 25 times [2023-01-28 08:48:16,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:16,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274700221] [2023-01-28 08:48:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:16,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274700221] [2023-01-28 08:48:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274700221] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:16,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:16,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:48:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787720898] [2023-01-28 08:48:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:48:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:48:16,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:48:16,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 410 [2023-01-28 08:48:16,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 514 transitions, 13401 flow. Second operand has 13 states, 13 states have (on average 127.61538461538461) internal successors, (1659), 13 states have internal predecessors, (1659), 0 states have call successors, (0), 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 08:48:16,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:16,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 410 [2023-01-28 08:48:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:17,878 INFO L130 PetriNetUnfolder]: 1909/3477 cut-off events. [2023-01-28 08:48:17,878 INFO L131 PetriNetUnfolder]: For 78157/78157 co-relation queries the response was YES. [2023-01-28 08:48:17,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 3477 events. 1909/3477 cut-off events. For 78157/78157 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21812 event pairs, 136 based on Foata normal form. 1/3478 useless extension candidates. Maximal degree in co-relation 30461. Up to 937 conditions per place. [2023-01-28 08:48:17,911 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 233 selfloop transitions, 326 changer transitions 6/565 dead transitions. [2023-01-28 08:48:17,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 565 transitions, 14816 flow [2023-01-28 08:48:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 08:48:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 08:48:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2255 transitions. [2023-01-28 08:48:17,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2023-01-28 08:48:17,913 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2255 transitions. [2023-01-28 08:48:17,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2255 transitions. [2023-01-28 08:48:17,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:17,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2255 transitions. [2023-01-28 08:48:17,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 132.64705882352942) internal successors, (2255), 17 states have internal predecessors, (2255), 0 states have call successors, (0), 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 08:48:17,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 08:48:17,918 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 08:48:17,918 INFO L175 Difference]: Start difference. First operand has 392 places, 514 transitions, 13401 flow. Second operand 17 states and 2255 transitions. [2023-01-28 08:48:17,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 565 transitions, 14816 flow [2023-01-28 08:48:18,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 565 transitions, 14215 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-28 08:48:18,259 INFO L231 Difference]: Finished difference. Result has 394 places, 514 transitions, 13487 flow [2023-01-28 08:48:18,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12806, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13487, PETRI_PLACES=394, PETRI_TRANSITIONS=514} [2023-01-28 08:48:18,259 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 368 predicate places. [2023-01-28 08:48:18,259 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 514 transitions, 13487 flow [2023-01-28 08:48:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.61538461538461) internal successors, (1659), 13 states have internal predecessors, (1659), 0 states have call successors, (0), 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 08:48:18,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:18,260 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:18,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-01-28 08:48:18,260 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:18,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -896136115, now seen corresponding path program 26 times [2023-01-28 08:48:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122504997] [2023-01-28 08:48:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:18,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:18,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122504997] [2023-01-28 08:48:18,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122504997] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:18,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:48:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643795569] [2023-01-28 08:48:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:48:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:48:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:48:18,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:48:18,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 514 transitions, 13487 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:48:18,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:18,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:48:18,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:19,867 INFO L130 PetriNetUnfolder]: 1972/3597 cut-off events. [2023-01-28 08:48:19,868 INFO L131 PetriNetUnfolder]: For 77607/77607 co-relation queries the response was YES. [2023-01-28 08:48:19,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31571 conditions, 3597 events. 1972/3597 cut-off events. For 77607/77607 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22759 event pairs, 203 based on Foata normal form. 4/3601 useless extension candidates. Maximal degree in co-relation 31396. Up to 1102 conditions per place. [2023-01-28 08:48:19,903 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 390 selfloop transitions, 221 changer transitions 7/618 dead transitions. [2023-01-28 08:48:19,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 618 transitions, 15610 flow [2023-01-28 08:48:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:48:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:48:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3028 transitions. [2023-01-28 08:48:19,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33569844789356984 [2023-01-28 08:48:19,905 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3028 transitions. [2023-01-28 08:48:19,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3028 transitions. [2023-01-28 08:48:19,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:19,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3028 transitions. [2023-01-28 08:48:19,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.63636363636363) internal successors, (3028), 22 states have internal predecessors, (3028), 0 states have call successors, (0), 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 08:48:19,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:48:19,911 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 08:48:19,911 INFO L175 Difference]: Start difference. First operand has 394 places, 514 transitions, 13487 flow. Second operand 22 states and 3028 transitions. [2023-01-28 08:48:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 618 transitions, 15610 flow [2023-01-28 08:48:20,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 618 transitions, 14912 flow, removed 5 selfloop flow, removed 15 redundant places. [2023-01-28 08:48:20,351 INFO L231 Difference]: Finished difference. Result has 404 places, 526 transitions, 13670 flow [2023-01-28 08:48:20,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12821, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13670, PETRI_PLACES=404, PETRI_TRANSITIONS=526} [2023-01-28 08:48:20,352 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 378 predicate places. [2023-01-28 08:48:20,352 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 526 transitions, 13670 flow [2023-01-28 08:48:20,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:48:20,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:20,352 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:20,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-01-28 08:48:20,353 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:20,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 424796825, now seen corresponding path program 27 times [2023-01-28 08:48:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44960408] [2023-01-28 08:48:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:20,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44960408] [2023-01-28 08:48:20,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44960408] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:20,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:20,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:48:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664792607] [2023-01-28 08:48:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 08:48:20,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:20,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 08:48:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-01-28 08:48:20,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:48:20,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 526 transitions, 13670 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:48:20,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:20,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:48:20,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:21,978 INFO L130 PetriNetUnfolder]: 1976/3609 cut-off events. [2023-01-28 08:48:21,978 INFO L131 PetriNetUnfolder]: For 78647/78647 co-relation queries the response was YES. [2023-01-28 08:48:21,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32146 conditions, 3609 events. 1976/3609 cut-off events. For 78647/78647 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22865 event pairs, 179 based on Foata normal form. 1/3610 useless extension candidates. Maximal degree in co-relation 31967. Up to 1195 conditions per place. [2023-01-28 08:48:22,008 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 372 selfloop transitions, 223 changer transitions 5/600 dead transitions. [2023-01-28 08:48:22,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 600 transitions, 15349 flow [2023-01-28 08:48:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 08:48:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 08:48:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2023-01-28 08:48:22,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344947735191638 [2023-01-28 08:48:22,011 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2023-01-28 08:48:22,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2023-01-28 08:48:22,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:22,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2023-01-28 08:48:22,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 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 08:48:22,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 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 08:48:22,016 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 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 08:48:22,016 INFO L175 Difference]: Start difference. First operand has 404 places, 526 transitions, 13670 flow. Second operand 21 states and 2880 transitions. [2023-01-28 08:48:22,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 600 transitions, 15349 flow [2023-01-28 08:48:22,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 600 transitions, 15000 flow, removed 55 selfloop flow, removed 13 redundant places. [2023-01-28 08:48:22,370 INFO L231 Difference]: Finished difference. Result has 412 places, 528 transitions, 13847 flow [2023-01-28 08:48:22,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13847, PETRI_PLACES=412, PETRI_TRANSITIONS=528} [2023-01-28 08:48:22,371 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 386 predicate places. [2023-01-28 08:48:22,371 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 528 transitions, 13847 flow [2023-01-28 08:48:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 08:48:22,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:22,372 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:22,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-01-28 08:48:22,372 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:22,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1572709157, now seen corresponding path program 28 times [2023-01-28 08:48:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280770985] [2023-01-28 08:48:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:22,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280770985] [2023-01-28 08:48:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280770985] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:22,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:22,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:48:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539958328] [2023-01-28 08:48:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:22,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:48:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:22,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:48:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:48:22,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-28 08:48:22,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 528 transitions, 13847 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:48:22,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:22,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-28 08:48:22,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:24,129 INFO L130 PetriNetUnfolder]: 1975/3602 cut-off events. [2023-01-28 08:48:24,130 INFO L131 PetriNetUnfolder]: For 78344/78344 co-relation queries the response was YES. [2023-01-28 08:48:24,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32307 conditions, 3602 events. 1975/3602 cut-off events. For 78344/78344 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22769 event pairs, 40 based on Foata normal form. 1/3603 useless extension candidates. Maximal degree in co-relation 32127. Up to 826 conditions per place. [2023-01-28 08:48:24,162 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 259 selfloop transitions, 371 changer transitions 8/638 dead transitions. [2023-01-28 08:48:24,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 638 transitions, 16254 flow [2023-01-28 08:48:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 08:48:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 08:48:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3160 transitions. [2023-01-28 08:48:24,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33510074231177095 [2023-01-28 08:48:24,165 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3160 transitions. [2023-01-28 08:48:24,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3160 transitions. [2023-01-28 08:48:24,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:24,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3160 transitions. [2023-01-28 08:48:24,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 137.3913043478261) internal successors, (3160), 23 states have internal predecessors, (3160), 0 states have call successors, (0), 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 08:48:24,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 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 08:48:24,171 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 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 08:48:24,171 INFO L175 Difference]: Start difference. First operand has 412 places, 528 transitions, 13847 flow. Second operand 23 states and 3160 transitions. [2023-01-28 08:48:24,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 638 transitions, 16254 flow [2023-01-28 08:48:24,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 638 transitions, 15864 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-01-28 08:48:24,520 INFO L231 Difference]: Finished difference. Result has 421 places, 548 transitions, 14866 flow [2023-01-28 08:48:24,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13488, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14866, PETRI_PLACES=421, PETRI_TRANSITIONS=548} [2023-01-28 08:48:24,520 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 395 predicate places. [2023-01-28 08:48:24,521 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 548 transitions, 14866 flow [2023-01-28 08:48:24,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 08:48:24,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:24,521 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:24,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-01-28 08:48:24,521 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:24,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 273531114, now seen corresponding path program 1 times [2023-01-28 08:48:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197403289] [2023-01-28 08:48:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197403289] [2023-01-28 08:48:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197403289] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057197371] [2023-01-28 08:48:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:24,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:24,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:24,563 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:24,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 08:48:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:24,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 08:48:24,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:24,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:24,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057197371] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:24,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:24,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 08:48:24,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145750959] [2023-01-28 08:48:24,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:24,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 08:48:24,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 08:48:24,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-01-28 08:48:24,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-28 08:48:24,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 548 transitions, 14866 flow. Second operand has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 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 08:48:24,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:24,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-28 08:48:24,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:25,965 INFO L130 PetriNetUnfolder]: 2548/4539 cut-off events. [2023-01-28 08:48:25,965 INFO L131 PetriNetUnfolder]: For 99505/99505 co-relation queries the response was YES. [2023-01-28 08:48:25,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40265 conditions, 4539 events. 2548/4539 cut-off events. For 99505/99505 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 26582 event pairs, 514 based on Foata normal form. 222/4761 useless extension candidates. Maximal degree in co-relation 40079. Up to 1245 conditions per place. [2023-01-28 08:48:26,015 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 674 selfloop transitions, 94 changer transitions 0/768 dead transitions. [2023-01-28 08:48:26,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 768 transitions, 20458 flow [2023-01-28 08:48:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 08:48:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 08:48:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-01-28 08:48:26,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505226480836237 [2023-01-28 08:48:26,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-01-28 08:48:26,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-01-28 08:48:26,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:26,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-01-28 08:48:26,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 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 08:48:26,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 08:48:26,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 08:48:26,020 INFO L175 Difference]: Start difference. First operand has 421 places, 548 transitions, 14866 flow. Second operand 7 states and 1293 transitions. [2023-01-28 08:48:26,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 768 transitions, 20458 flow [2023-01-28 08:48:26,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 768 transitions, 19519 flow, removed 35 selfloop flow, removed 19 redundant places. [2023-01-28 08:48:26,447 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 14730 flow [2023-01-28 08:48:26,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14210, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14730, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2023-01-28 08:48:26,447 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 385 predicate places. [2023-01-28 08:48:26,447 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 14730 flow [2023-01-28 08:48:26,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 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 08:48:26,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:26,448 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:26,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:26,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:26,648 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:26,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1097738867, now seen corresponding path program 1 times [2023-01-28 08:48:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:26,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878539513] [2023-01-28 08:48:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:26,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:26,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878539513] [2023-01-28 08:48:26,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878539513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:26,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:26,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:48:26,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586502818] [2023-01-28 08:48:26,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:26,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:48:26,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:26,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:48:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:48:26,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:26,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 14730 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 08:48:26,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:26,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:26,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:28,241 INFO L130 PetriNetUnfolder]: 2838/5023 cut-off events. [2023-01-28 08:48:28,242 INFO L131 PetriNetUnfolder]: For 108702/108702 co-relation queries the response was YES. [2023-01-28 08:48:28,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43516 conditions, 5023 events. 2838/5023 cut-off events. For 108702/108702 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30024 event pairs, 499 based on Foata normal form. 8/5031 useless extension candidates. Maximal degree in co-relation 43333. Up to 2125 conditions per place. [2023-01-28 08:48:28,289 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 353 selfloop transitions, 299 changer transitions 5/657 dead transitions. [2023-01-28 08:48:28,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 657 transitions, 17245 flow [2023-01-28 08:48:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:48:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:48:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2023-01-28 08:48:28,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569105691056911 [2023-01-28 08:48:28,291 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2023-01-28 08:48:28,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2023-01-28 08:48:28,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:28,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2023-01-28 08:48:28,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 0 states have call successors, (0), 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 08:48:28,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:48:28,295 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:48:28,295 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 14730 flow. Second operand 12 states and 1756 transitions. [2023-01-28 08:48:28,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 657 transitions, 17245 flow [2023-01-28 08:48:28,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 657 transitions, 17137 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 08:48:28,773 INFO L231 Difference]: Finished difference. Result has 425 places, 594 transitions, 16252 flow [2023-01-28 08:48:28,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14602, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16252, PETRI_PLACES=425, PETRI_TRANSITIONS=594} [2023-01-28 08:48:28,774 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 399 predicate places. [2023-01-28 08:48:28,774 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 594 transitions, 16252 flow [2023-01-28 08:48:28,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 08:48:28,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:28,774 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-01-28 08:48:28,774 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:28,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash 218436905, now seen corresponding path program 2 times [2023-01-28 08:48:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399119773] [2023-01-28 08:48:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:29,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399119773] [2023-01-28 08:48:29,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399119773] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:29,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275051098] [2023-01-28 08:48:29,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:48:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:29,029 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:29,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 08:48:29,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:48:29,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:29,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:48:29,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:29,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:29,408 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 08:48:29,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 08:48:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:29,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275051098] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:29,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:48:29,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 18 [2023-01-28 08:48:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038012730] [2023-01-28 08:48:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:29,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:48:29,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:29,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:48:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-01-28 08:48:29,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-28 08:48:29,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 594 transitions, 16252 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:48:29,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:29,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-28 08:48:29,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:30,736 INFO L130 PetriNetUnfolder]: 2848/5033 cut-off events. [2023-01-28 08:48:30,737 INFO L131 PetriNetUnfolder]: For 118126/118126 co-relation queries the response was YES. [2023-01-28 08:48:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45277 conditions, 5033 events. 2848/5033 cut-off events. For 118126/118126 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 29971 event pairs, 618 based on Foata normal form. 8/5041 useless extension candidates. Maximal degree in co-relation 45092. Up to 2903 conditions per place. [2023-01-28 08:48:30,790 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 335 selfloop transitions, 297 changer transitions 0/632 dead transitions. [2023-01-28 08:48:30,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 632 transitions, 17924 flow [2023-01-28 08:48:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 08:48:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 08:48:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1247 transitions. [2023-01-28 08:48:30,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3801829268292683 [2023-01-28 08:48:30,791 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1247 transitions. [2023-01-28 08:48:30,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1247 transitions. [2023-01-28 08:48:30,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:30,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1247 transitions. [2023-01-28 08:48:30,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 155.875) internal successors, (1247), 8 states have internal predecessors, (1247), 0 states have call successors, (0), 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 08:48:30,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:48:30,793 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:48:30,794 INFO L175 Difference]: Start difference. First operand has 425 places, 594 transitions, 16252 flow. Second operand 8 states and 1247 transitions. [2023-01-28 08:48:30,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 632 transitions, 17924 flow [2023-01-28 08:48:31,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 632 transitions, 17744 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-01-28 08:48:31,356 INFO L231 Difference]: Finished difference. Result has 424 places, 598 transitions, 16844 flow [2023-01-28 08:48:31,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16072, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16844, PETRI_PLACES=424, PETRI_TRANSITIONS=598} [2023-01-28 08:48:31,357 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2023-01-28 08:48:31,357 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 598 transitions, 16844 flow [2023-01-28 08:48:31,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:48:31,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:31,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:31,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:31,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-01-28 08:48:31,562 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:31,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash -179770209, now seen corresponding path program 3 times [2023-01-28 08:48:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865393060] [2023-01-28 08:48:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:31,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865393060] [2023-01-28 08:48:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865393060] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207048823] [2023-01-28 08:48:31,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:48:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:31,815 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:31,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 08:48:32,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:48:32,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:48:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:32,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:32,173 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 08:48:32,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 08:48:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:32,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207048823] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:32,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:48:32,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-01-28 08:48:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960603183] [2023-01-28 08:48:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:32,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:48:32,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:48:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-01-28 08:48:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-28 08:48:32,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 598 transitions, 16844 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:48:32,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:32,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-28 08:48:32,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:33,518 INFO L130 PetriNetUnfolder]: 2850/5039 cut-off events. [2023-01-28 08:48:33,519 INFO L131 PetriNetUnfolder]: For 123178/123178 co-relation queries the response was YES. [2023-01-28 08:48:33,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46033 conditions, 5039 events. 2850/5039 cut-off events. For 123178/123178 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 30079 event pairs, 634 based on Foata normal form. 4/5043 useless extension candidates. Maximal degree in co-relation 45844. Up to 2907 conditions per place. [2023-01-28 08:48:33,580 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 322 selfloop transitions, 302 changer transitions 0/624 dead transitions. [2023-01-28 08:48:33,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 624 transitions, 18310 flow [2023-01-28 08:48:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 08:48:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 08:48:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1239 transitions. [2023-01-28 08:48:33,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777439024390244 [2023-01-28 08:48:33,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1239 transitions. [2023-01-28 08:48:33,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1239 transitions. [2023-01-28 08:48:33,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:33,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1239 transitions. [2023-01-28 08:48:33,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.875) internal successors, (1239), 8 states have internal predecessors, (1239), 0 states have call successors, (0), 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 08:48:33,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:48:33,584 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:48:33,584 INFO L175 Difference]: Start difference. First operand has 424 places, 598 transitions, 16844 flow. Second operand 8 states and 1239 transitions. [2023-01-28 08:48:33,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 624 transitions, 18310 flow [2023-01-28 08:48:34,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 624 transitions, 17964 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-01-28 08:48:34,204 INFO L231 Difference]: Finished difference. Result has 427 places, 601 transitions, 17243 flow [2023-01-28 08:48:34,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16500, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17243, PETRI_PLACES=427, PETRI_TRANSITIONS=601} [2023-01-28 08:48:34,204 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 401 predicate places. [2023-01-28 08:48:34,205 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 601 transitions, 17243 flow [2023-01-28 08:48:34,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:48:34,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:34,205 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:34,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:34,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-01-28 08:48:34,405 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:34,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1438672969, now seen corresponding path program 4 times [2023-01-28 08:48:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207584729] [2023-01-28 08:48:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:34,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207584729] [2023-01-28 08:48:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207584729] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345453332] [2023-01-28 08:48:34,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:48:34,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:34,646 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:34,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 08:48:34,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:48:34,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:34,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 08:48:34,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:34,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:48:34,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-01-28 08:48:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:34,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:36,987 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 08:48:36,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 08:48:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345453332] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:37,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-01-28 08:48:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657636433] [2023-01-28 08:48:37,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 08:48:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 08:48:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=272, Unknown=1, NotChecked=0, Total=342 [2023-01-28 08:48:37,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:37,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 601 transitions, 17243 flow. Second operand has 19 states, 19 states have (on average 139.26315789473685) internal successors, (2646), 19 states have internal predecessors, (2646), 0 states have call successors, (0), 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 08:48:37,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:37,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:37,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:38,553 INFO L130 PetriNetUnfolder]: 2880/5089 cut-off events. [2023-01-28 08:48:38,553 INFO L131 PetriNetUnfolder]: For 129461/129461 co-relation queries the response was YES. [2023-01-28 08:48:38,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47251 conditions, 5089 events. 2880/5089 cut-off events. For 129461/129461 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30388 event pairs, 639 based on Foata normal form. 8/5097 useless extension candidates. Maximal degree in co-relation 47061. Up to 2915 conditions per place. [2023-01-28 08:48:38,608 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 324 selfloop transitions, 324 changer transitions 0/648 dead transitions. [2023-01-28 08:48:38,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 648 transitions, 19179 flow [2023-01-28 08:48:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:48:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:48:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1874 transitions. [2023-01-28 08:48:38,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35159474671669794 [2023-01-28 08:48:38,610 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1874 transitions. [2023-01-28 08:48:38,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1874 transitions. [2023-01-28 08:48:38,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:38,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1874 transitions. [2023-01-28 08:48:38,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.15384615384616) internal successors, (1874), 13 states have internal predecessors, (1874), 0 states have call successors, (0), 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 08:48:38,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:38,613 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:38,613 INFO L175 Difference]: Start difference. First operand has 427 places, 601 transitions, 17243 flow. Second operand 13 states and 1874 transitions. [2023-01-28 08:48:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 648 transitions, 19179 flow [2023-01-28 08:48:39,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 648 transitions, 18694 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 08:48:39,234 INFO L231 Difference]: Finished difference. Result has 436 places, 611 transitions, 17779 flow [2023-01-28 08:48:39,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16768, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17779, PETRI_PLACES=436, PETRI_TRANSITIONS=611} [2023-01-28 08:48:39,234 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 410 predicate places. [2023-01-28 08:48:39,234 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 611 transitions, 17779 flow [2023-01-28 08:48:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.26315789473685) internal successors, (2646), 19 states have internal predecessors, (2646), 0 states have call successors, (0), 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 08:48:39,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:39,235 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:39,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:39,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:39,439 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:39,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash -699072181, now seen corresponding path program 5 times [2023-01-28 08:48:39,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:39,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070672872] [2023-01-28 08:48:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:39,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:39,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070672872] [2023-01-28 08:48:39,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070672872] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:39,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:39,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:48:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519442818] [2023-01-28 08:48:39,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:39,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:48:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:48:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:48:39,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:39,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 611 transitions, 17779 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 08:48:39,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:39,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:39,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:41,186 INFO L130 PetriNetUnfolder]: 2864/5069 cut-off events. [2023-01-28 08:48:41,186 INFO L131 PetriNetUnfolder]: For 130616/130616 co-relation queries the response was YES. [2023-01-28 08:48:41,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47354 conditions, 5069 events. 2864/5069 cut-off events. For 130616/130616 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30347 event pairs, 504 based on Foata normal form. 8/5077 useless extension candidates. Maximal degree in co-relation 47162. Up to 2201 conditions per place. [2023-01-28 08:48:41,246 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 281 selfloop transitions, 371 changer transitions 0/652 dead transitions. [2023-01-28 08:48:41,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 652 transitions, 19392 flow [2023-01-28 08:48:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:48:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:48:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1888 transitions. [2023-01-28 08:48:41,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542213883677298 [2023-01-28 08:48:41,248 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1888 transitions. [2023-01-28 08:48:41,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1888 transitions. [2023-01-28 08:48:41,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:41,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1888 transitions. [2023-01-28 08:48:41,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.23076923076923) internal successors, (1888), 13 states have internal predecessors, (1888), 0 states have call successors, (0), 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 08:48:41,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:41,252 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:41,252 INFO L175 Difference]: Start difference. First operand has 436 places, 611 transitions, 17779 flow. Second operand 13 states and 1888 transitions. [2023-01-28 08:48:41,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 652 transitions, 19392 flow [2023-01-28 08:48:41,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 652 transitions, 18771 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-28 08:48:41,980 INFO L231 Difference]: Finished difference. Result has 443 places, 613 transitions, 18154 flow [2023-01-28 08:48:41,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17086, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18154, PETRI_PLACES=443, PETRI_TRANSITIONS=613} [2023-01-28 08:48:41,980 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 417 predicate places. [2023-01-28 08:48:41,981 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 613 transitions, 18154 flow [2023-01-28 08:48:41,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 08:48:41,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:41,981 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:41,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-01-28 08:48:41,981 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:41,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash 333984891, now seen corresponding path program 6 times [2023-01-28 08:48:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433373737] [2023-01-28 08:48:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:41,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433373737] [2023-01-28 08:48:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433373737] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733821724] [2023-01-28 08:48:42,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:48:42,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:42,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:42,241 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:42,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 08:48:42,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:48:42,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:42,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:48:42,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:42,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 08:48:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:42,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:42,597 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:48:42,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:48:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:42,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733821724] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:42,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:42,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-28 08:48:42,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420566838] [2023-01-28 08:48:42,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:42,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 08:48:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 08:48:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-01-28 08:48:42,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:42,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 613 transitions, 18154 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 08:48:42,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:42,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:42,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:44,185 INFO L130 PetriNetUnfolder]: 2885/5106 cut-off events. [2023-01-28 08:48:44,185 INFO L131 PetriNetUnfolder]: For 137626/137626 co-relation queries the response was YES. [2023-01-28 08:48:44,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48441 conditions, 5106 events. 2885/5106 cut-off events. For 137626/137626 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30549 event pairs, 626 based on Foata normal form. 10/5116 useless extension candidates. Maximal degree in co-relation 48248. Up to 2927 conditions per place. [2023-01-28 08:48:44,233 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 311 selfloop transitions, 347 changer transitions 0/658 dead transitions. [2023-01-28 08:48:44,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 658 transitions, 20119 flow [2023-01-28 08:48:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:48:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:48:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1879 transitions. [2023-01-28 08:48:44,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3525328330206379 [2023-01-28 08:48:44,234 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1879 transitions. [2023-01-28 08:48:44,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1879 transitions. [2023-01-28 08:48:44,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:44,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1879 transitions. [2023-01-28 08:48:44,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.53846153846155) internal successors, (1879), 13 states have internal predecessors, (1879), 0 states have call successors, (0), 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 08:48:44,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:44,238 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:44,238 INFO L175 Difference]: Start difference. First operand has 443 places, 613 transitions, 18154 flow. Second operand 13 states and 1879 transitions. [2023-01-28 08:48:44,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 658 transitions, 20119 flow [2023-01-28 08:48:44,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 658 transitions, 19460 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-28 08:48:44,857 INFO L231 Difference]: Finished difference. Result has 447 places, 621 transitions, 18546 flow [2023-01-28 08:48:44,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17458, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18546, PETRI_PLACES=447, PETRI_TRANSITIONS=621} [2023-01-28 08:48:44,857 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-01-28 08:48:44,858 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 621 transitions, 18546 flow [2023-01-28 08:48:44,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 08:48:44,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:44,858 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:44,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:45,061 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:45,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -61596447, now seen corresponding path program 7 times [2023-01-28 08:48:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957066484] [2023-01-28 08:48:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:45,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957066484] [2023-01-28 08:48:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957066484] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766986666] [2023-01-28 08:48:45,310 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 08:48:45,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:45,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:45,312 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:45,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 08:48:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:45,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:48:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:45,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 08:48:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:45,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:45,653 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:48:45,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:48:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:45,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766986666] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:45,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:45,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-28 08:48:45,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142165358] [2023-01-28 08:48:45,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:45,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 08:48:45,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:45,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 08:48:45,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-28 08:48:45,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:45,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 621 transitions, 18546 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 08:48:45,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:45,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:45,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:47,376 INFO L130 PetriNetUnfolder]: 2856/5053 cut-off events. [2023-01-28 08:48:47,376 INFO L131 PetriNetUnfolder]: For 135880/135880 co-relation queries the response was YES. [2023-01-28 08:48:47,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48127 conditions, 5053 events. 2856/5053 cut-off events. For 135880/135880 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30096 event pairs, 593 based on Foata normal form. 10/5063 useless extension candidates. Maximal degree in co-relation 47933. Up to 2927 conditions per place. [2023-01-28 08:48:47,433 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 327 selfloop transitions, 341 changer transitions 0/668 dead transitions. [2023-01-28 08:48:47,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 668 transitions, 20307 flow [2023-01-28 08:48:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 08:48:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 08:48:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2028 transitions. [2023-01-28 08:48:47,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533101045296167 [2023-01-28 08:48:47,435 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2028 transitions. [2023-01-28 08:48:47,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2028 transitions. [2023-01-28 08:48:47,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:47,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2028 transitions. [2023-01-28 08:48:47,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 144.85714285714286) internal successors, (2028), 14 states have internal predecessors, (2028), 0 states have call successors, (0), 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 08:48:47,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:48:47,438 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 08:48:47,439 INFO L175 Difference]: Start difference. First operand has 447 places, 621 transitions, 18546 flow. Second operand 14 states and 2028 transitions. [2023-01-28 08:48:47,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 668 transitions, 20307 flow [2023-01-28 08:48:48,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 668 transitions, 19768 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 08:48:48,164 INFO L231 Difference]: Finished difference. Result has 456 places, 621 transitions, 18763 flow [2023-01-28 08:48:48,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17934, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18763, PETRI_PLACES=456, PETRI_TRANSITIONS=621} [2023-01-28 08:48:48,165 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-01-28 08:48:48,165 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 621 transitions, 18763 flow [2023-01-28 08:48:48,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 08:48:48,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:48,165 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:48,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:48,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-01-28 08:48:48,366 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:48,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:48,366 INFO L85 PathProgramCache]: Analyzing trace with hash 294394613, now seen corresponding path program 8 times [2023-01-28 08:48:48,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:48,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840484291] [2023-01-28 08:48:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:48,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840484291] [2023-01-28 08:48:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840484291] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953648605] [2023-01-28 08:48:48,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:48:48,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:48,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:48,623 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:48,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 08:48:48,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:48:48,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:48,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:48:48,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:48,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 08:48:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:48,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:48,976 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-28 08:48:48,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-01-28 08:48:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:49,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953648605] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:49,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:49,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-28 08:48:49,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670144079] [2023-01-28 08:48:49,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:49,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 08:48:49,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 08:48:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-01-28 08:48:49,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:49,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 621 transitions, 18763 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 08:48:49,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:49,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:49,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:50,585 INFO L130 PetriNetUnfolder]: 2846/5033 cut-off events. [2023-01-28 08:48:50,586 INFO L131 PetriNetUnfolder]: For 132951/132951 co-relation queries the response was YES. [2023-01-28 08:48:50,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48249 conditions, 5033 events. 2846/5033 cut-off events. For 132951/132951 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29810 event pairs, 258 based on Foata normal form. 4/5037 useless extension candidates. Maximal degree in co-relation 48051. Up to 1656 conditions per place. [2023-01-28 08:48:50,641 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 307 selfloop transitions, 357 changer transitions 0/664 dead transitions. [2023-01-28 08:48:50,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 664 transitions, 20365 flow [2023-01-28 08:48:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:48:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:48:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1885 transitions. [2023-01-28 08:48:50,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2023-01-28 08:48:50,646 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1885 transitions. [2023-01-28 08:48:50,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1885 transitions. [2023-01-28 08:48:50,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:50,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1885 transitions. [2023-01-28 08:48:50,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 0 states have call successors, (0), 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 08:48:50,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:50,650 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:48:50,650 INFO L175 Difference]: Start difference. First operand has 456 places, 621 transitions, 18763 flow. Second operand 13 states and 1885 transitions. [2023-01-28 08:48:50,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 664 transitions, 20365 flow [2023-01-28 08:48:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 664 transitions, 19331 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-01-28 08:48:51,289 INFO L231 Difference]: Finished difference. Result has 457 places, 621 transitions, 18455 flow [2023-01-28 08:48:51,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17695, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18455, PETRI_PLACES=457, PETRI_TRANSITIONS=621} [2023-01-28 08:48:51,290 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 431 predicate places. [2023-01-28 08:48:51,290 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 621 transitions, 18455 flow [2023-01-28 08:48:51,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 08:48:51,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:51,290 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:51,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:51,492 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:51,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1174875799, now seen corresponding path program 9 times [2023-01-28 08:48:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:51,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916432492] [2023-01-28 08:48:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 08:48:52,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916432492] [2023-01-28 08:48:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916432492] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153407542] [2023-01-28 08:48:52,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:48:52,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:52,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:52,181 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:52,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 08:48:52,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:48:52,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:52,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:48:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:52,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 08:48:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:52,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:52,567 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:48:52,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:48:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:52,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153407542] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:52,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:52,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 7] total 25 [2023-01-28 08:48:52,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089516868] [2023-01-28 08:48:52,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:52,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 08:48:52,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 08:48:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-01-28 08:48:52,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 410 [2023-01-28 08:48:52,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 621 transitions, 18455 flow. Second operand has 25 states, 25 states have (on average 114.2) internal successors, (2855), 25 states have internal predecessors, (2855), 0 states have call successors, (0), 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 08:48:52,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:52,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 410 [2023-01-28 08:48:52,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:54,426 INFO L130 PetriNetUnfolder]: 2858/5053 cut-off events. [2023-01-28 08:48:54,426 INFO L131 PetriNetUnfolder]: For 136263/136263 co-relation queries the response was YES. [2023-01-28 08:48:54,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48375 conditions, 5053 events. 2858/5053 cut-off events. For 136263/136263 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29984 event pairs, 488 based on Foata normal form. 4/5057 useless extension candidates. Maximal degree in co-relation 48181. Up to 1656 conditions per place. [2023-01-28 08:48:54,484 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 309 selfloop transitions, 366 changer transitions 0/675 dead transitions. [2023-01-28 08:48:54,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 675 transitions, 20458 flow [2023-01-28 08:48:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 08:48:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 08:48:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1903 transitions. [2023-01-28 08:48:54,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29009146341463415 [2023-01-28 08:48:54,486 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1903 transitions. [2023-01-28 08:48:54,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1903 transitions. [2023-01-28 08:48:54,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:54,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1903 transitions. [2023-01-28 08:48:54,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.9375) internal successors, (1903), 16 states have internal predecessors, (1903), 0 states have call successors, (0), 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 08:48:54,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 08:48:54,490 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 08:48:54,490 INFO L175 Difference]: Start difference. First operand has 457 places, 621 transitions, 18455 flow. Second operand 16 states and 1903 transitions. [2023-01-28 08:48:54,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 675 transitions, 20458 flow [2023-01-28 08:48:55,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 675 transitions, 20311 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-01-28 08:48:55,171 INFO L231 Difference]: Finished difference. Result has 467 places, 628 transitions, 19315 flow [2023-01-28 08:48:55,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18308, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19315, PETRI_PLACES=467, PETRI_TRANSITIONS=628} [2023-01-28 08:48:55,171 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2023-01-28 08:48:55,172 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 628 transitions, 19315 flow [2023-01-28 08:48:55,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 114.2) internal successors, (2855), 25 states have internal predecessors, (2855), 0 states have call successors, (0), 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 08:48:55,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:55,172 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:55,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:55,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2023-01-28 08:48:55,377 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:55,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1955066157, now seen corresponding path program 10 times [2023-01-28 08:48:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284926215] [2023-01-28 08:48:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:55,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:55,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284926215] [2023-01-28 08:48:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284926215] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:55,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571495129] [2023-01-28 08:48:55,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:48:55,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:55,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:55,646 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:55,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 08:48:55,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:48:55,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:55,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 08:48:55,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:55,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:48:55,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-01-28 08:48:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:55,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:55,968 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:48:55,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:48:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:55,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571495129] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:55,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:55,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-01-28 08:48:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961615901] [2023-01-28 08:48:55,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:55,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 08:48:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 08:48:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-01-28 08:48:55,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:56,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 628 transitions, 19315 flow. Second operand has 19 states, 19 states have (on average 139.3684210526316) internal successors, (2648), 19 states have internal predecessors, (2648), 0 states have call successors, (0), 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 08:48:56,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:56,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:56,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:57,535 INFO L130 PetriNetUnfolder]: 2864/5063 cut-off events. [2023-01-28 08:48:57,535 INFO L131 PetriNetUnfolder]: For 146806/146806 co-relation queries the response was YES. [2023-01-28 08:48:57,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49480 conditions, 5063 events. 2864/5063 cut-off events. For 146806/146806 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30083 event pairs, 508 based on Foata normal form. 4/5067 useless extension candidates. Maximal degree in co-relation 49282. Up to 1656 conditions per place. [2023-01-28 08:48:57,594 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 295 selfloop transitions, 366 changer transitions 0/661 dead transitions. [2023-01-28 08:48:57,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 661 transitions, 20951 flow [2023-01-28 08:48:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:48:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:48:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1459 transitions. [2023-01-28 08:48:57,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35585365853658535 [2023-01-28 08:48:57,596 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1459 transitions. [2023-01-28 08:48:57,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1459 transitions. [2023-01-28 08:48:57,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:57,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1459 transitions. [2023-01-28 08:48:57,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.9) internal successors, (1459), 10 states have internal predecessors, (1459), 0 states have call successors, (0), 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 08:48:57,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:48:57,599 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:48:57,599 INFO L175 Difference]: Start difference. First operand has 467 places, 628 transitions, 19315 flow. Second operand 10 states and 1459 transitions. [2023-01-28 08:48:57,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 661 transitions, 20951 flow [2023-01-28 08:48:58,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 661 transitions, 20211 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-01-28 08:48:58,274 INFO L231 Difference]: Finished difference. Result has 466 places, 630 transitions, 19733 flow [2023-01-28 08:48:58,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18577, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19733, PETRI_PLACES=466, PETRI_TRANSITIONS=630} [2023-01-28 08:48:58,274 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-01-28 08:48:58,274 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 630 transitions, 19733 flow [2023-01-28 08:48:58,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.3684210526316) internal successors, (2648), 19 states have internal predecessors, (2648), 0 states have call successors, (0), 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 08:48:58,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:58,275 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:48:58,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-01-28 08:48:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:58,475 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:48:58,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2135374965, now seen corresponding path program 11 times [2023-01-28 08:48:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241366427] [2023-01-28 08:48:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:48:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241366427] [2023-01-28 08:48:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241366427] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:58,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:48:58,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 08:48:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239754173] [2023-01-28 08:48:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:58,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:48:58,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:48:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:48:58,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-28 08:48:58,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 630 transitions, 19733 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 08:48:58,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:58,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-28 08:48:58,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:00,099 INFO L130 PetriNetUnfolder]: 2860/5059 cut-off events. [2023-01-28 08:49:00,099 INFO L131 PetriNetUnfolder]: For 154616/154616 co-relation queries the response was YES. [2023-01-28 08:49:00,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49898 conditions, 5059 events. 2860/5059 cut-off events. For 154616/154616 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30056 event pairs, 660 based on Foata normal form. 4/5063 useless extension candidates. Maximal degree in co-relation 49705. Up to 2446 conditions per place. [2023-01-28 08:49:00,157 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 415 selfloop transitions, 238 changer transitions 4/657 dead transitions. [2023-01-28 08:49:00,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 657 transitions, 21220 flow [2023-01-28 08:49:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:49:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:49:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1446 transitions. [2023-01-28 08:49:00,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526829268292683 [2023-01-28 08:49:00,158 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1446 transitions. [2023-01-28 08:49:00,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1446 transitions. [2023-01-28 08:49:00,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:00,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1446 transitions. [2023-01-28 08:49:00,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.6) internal successors, (1446), 10 states have internal predecessors, (1446), 0 states have call successors, (0), 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 08:49:00,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:49:00,161 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:49:00,161 INFO L175 Difference]: Start difference. First operand has 466 places, 630 transitions, 19733 flow. Second operand 10 states and 1446 transitions. [2023-01-28 08:49:00,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 657 transitions, 21220 flow [2023-01-28 08:49:00,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 657 transitions, 20634 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-28 08:49:00,903 INFO L231 Difference]: Finished difference. Result has 466 places, 628 transitions, 19587 flow [2023-01-28 08:49:00,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19135, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19587, PETRI_PLACES=466, PETRI_TRANSITIONS=628} [2023-01-28 08:49:00,904 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-01-28 08:49:00,904 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 628 transitions, 19587 flow [2023-01-28 08:49:00,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 08:49:00,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:00,904 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:00,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-01-28 08:49:00,905 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:00,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 721457961, now seen corresponding path program 12 times [2023-01-28 08:49:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980757398] [2023-01-28 08:49:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980757398] [2023-01-28 08:49:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980757398] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979679971] [2023-01-28 08:49:01,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:49:01,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:01,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:01,153 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:01,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 08:49:01,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:49:01,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:01,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 08:49:01,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:01,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:49:01,535 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-28 08:49:01,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 57 [2023-01-28 08:49:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:01,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979679971] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:01,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:49:01,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-01-28 08:49:01,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333801163] [2023-01-28 08:49:01,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:49:01,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 08:49:01,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 08:49:01,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-28 08:49:01,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-28 08:49:01,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 628 transitions, 19587 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:49:01,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:01,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-28 08:49:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:02,948 INFO L130 PetriNetUnfolder]: 2849/5034 cut-off events. [2023-01-28 08:49:02,948 INFO L131 PetriNetUnfolder]: For 153237/153237 co-relation queries the response was YES. [2023-01-28 08:49:02,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49647 conditions, 5034 events. 2849/5034 cut-off events. For 153237/153237 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 29821 event pairs, 506 based on Foata normal form. 4/5038 useless extension candidates. Maximal degree in co-relation 49454. Up to 1656 conditions per place. [2023-01-28 08:49:03,012 INFO L137 encePairwiseOnDemand]: 402/410 looper letters, 292 selfloop transitions, 359 changer transitions 0/651 dead transitions. [2023-01-28 08:49:03,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 651 transitions, 20966 flow [2023-01-28 08:49:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 08:49:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 08:49:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1250 transitions. [2023-01-28 08:49:03,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2023-01-28 08:49:03,014 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1250 transitions. [2023-01-28 08:49:03,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1250 transitions. [2023-01-28 08:49:03,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:03,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1250 transitions. [2023-01-28 08:49:03,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 0 states have call successors, (0), 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 08:49:03,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:49:03,016 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 08:49:03,016 INFO L175 Difference]: Start difference. First operand has 466 places, 628 transitions, 19587 flow. Second operand 8 states and 1250 transitions. [2023-01-28 08:49:03,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 651 transitions, 20966 flow [2023-01-28 08:49:03,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 651 transitions, 20081 flow, removed 8 selfloop flow, removed 23 redundant places. [2023-01-28 08:49:03,751 INFO L231 Difference]: Finished difference. Result has 447 places, 625 transitions, 19339 flow [2023-01-28 08:49:03,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18621, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19339, PETRI_PLACES=447, PETRI_TRANSITIONS=625} [2023-01-28 08:49:03,752 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-01-28 08:49:03,752 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 625 transitions, 19339 flow [2023-01-28 08:49:03,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 08:49:03,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:03,752 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:03,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:03,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:03,953 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:03,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2023468011, now seen corresponding path program 13 times [2023-01-28 08:49:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405507051] [2023-01-28 08:49:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:04,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405507051] [2023-01-28 08:49:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405507051] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:49:04,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:49:04,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:49:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329839891] [2023-01-28 08:49:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:49:04,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:49:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:49:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:49:04,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 08:49:04,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 625 transitions, 19339 flow. Second operand has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 08:49:04,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:04,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 08:49:04,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:05,732 INFO L130 PetriNetUnfolder]: 2910/5144 cut-off events. [2023-01-28 08:49:05,732 INFO L131 PetriNetUnfolder]: For 150473/150473 co-relation queries the response was YES. [2023-01-28 08:49:05,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50759 conditions, 5144 events. 2910/5144 cut-off events. For 150473/150473 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30782 event pairs, 503 based on Foata normal form. 4/5148 useless extension candidates. Maximal degree in co-relation 50580. Up to 2180 conditions per place. [2023-01-28 08:49:05,788 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 337 selfloop transitions, 359 changer transitions 4/700 dead transitions. [2023-01-28 08:49:05,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 700 transitions, 21820 flow [2023-01-28 08:49:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:49:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:49:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1699 transitions. [2023-01-28 08:49:05,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34532520325203253 [2023-01-28 08:49:05,790 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1699 transitions. [2023-01-28 08:49:05,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1699 transitions. [2023-01-28 08:49:05,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:05,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1699 transitions. [2023-01-28 08:49:05,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.58333333333334) internal successors, (1699), 12 states have internal predecessors, (1699), 0 states have call successors, (0), 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 08:49:05,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:05,793 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:05,793 INFO L175 Difference]: Start difference. First operand has 447 places, 625 transitions, 19339 flow. Second operand 12 states and 1699 transitions. [2023-01-28 08:49:05,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 700 transitions, 21820 flow [2023-01-28 08:49:06,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 700 transitions, 21232 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 08:49:06,463 INFO L231 Difference]: Finished difference. Result has 456 places, 640 transitions, 20257 flow [2023-01-28 08:49:06,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18776, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20257, PETRI_PLACES=456, PETRI_TRANSITIONS=640} [2023-01-28 08:49:06,464 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-01-28 08:49:06,464 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 640 transitions, 20257 flow [2023-01-28 08:49:06,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 08:49:06,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:06,464 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-01-28 08:49:06,464 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:06,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1992329379, now seen corresponding path program 14 times [2023-01-28 08:49:06,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976998834] [2023-01-28 08:49:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:49:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976998834] [2023-01-28 08:49:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976998834] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353434046] [2023-01-28 08:49:07,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:49:07,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:07,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:07,598 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:07,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 08:49:07,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:49:07,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:07,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 08:49:07,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:08,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:08,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:08,135 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 08:49:08,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-01-28 08:49:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:08,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:49:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353434046] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:49:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:49:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-01-28 08:49:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568783341] [2023-01-28 08:49:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:49:08,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:49:08,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:49:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-28 08:49:08,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-28 08:49:08,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 640 transitions, 20257 flow. Second operand has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 08:49:08,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:08,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-28 08:49:08,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:09,924 INFO L130 PetriNetUnfolder]: 2905/5135 cut-off events. [2023-01-28 08:49:09,924 INFO L131 PetriNetUnfolder]: For 150455/150455 co-relation queries the response was YES. [2023-01-28 08:49:09,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50959 conditions, 5135 events. 2905/5135 cut-off events. For 150455/150455 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30733 event pairs, 489 based on Foata normal form. 4/5139 useless extension candidates. Maximal degree in co-relation 50846. Up to 2464 conditions per place. [2023-01-28 08:49:09,982 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 288 selfloop transitions, 384 changer transitions 4/676 dead transitions. [2023-01-28 08:49:09,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 676 transitions, 21777 flow [2023-01-28 08:49:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:49:09,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:49:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-01-28 08:49:09,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3426829268292683 [2023-01-28 08:49:09,984 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-01-28 08:49:09,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-01-28 08:49:09,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:09,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-01-28 08:49:09,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 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 08:49:09,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:49:09,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:49:09,987 INFO L175 Difference]: Start difference. First operand has 456 places, 640 transitions, 20257 flow. Second operand 10 states and 1405 transitions. [2023-01-28 08:49:09,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 676 transitions, 21777 flow [2023-01-28 08:49:10,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 676 transitions, 21652 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 08:49:10,718 INFO L231 Difference]: Finished difference. Result has 460 places, 638 transitions, 20834 flow [2023-01-28 08:49:10,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20098, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20834, PETRI_PLACES=460, PETRI_TRANSITIONS=638} [2023-01-28 08:49:10,719 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-01-28 08:49:10,719 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 638 transitions, 20834 flow [2023-01-28 08:49:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 08:49:10,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:10,719 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:10,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:10,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:10,925 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:10,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:10,926 INFO L85 PathProgramCache]: Analyzing trace with hash -302565915, now seen corresponding path program 15 times [2023-01-28 08:49:10,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:10,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679317637] [2023-01-28 08:49:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679317637] [2023-01-28 08:49:11,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679317637] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:49:11,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:49:11,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:49:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93691544] [2023-01-28 08:49:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:49:11,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:49:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:49:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:49:11,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 08:49:11,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 638 transitions, 20834 flow. Second operand has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 08:49:11,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:11,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 08:49:11,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:12,806 INFO L130 PetriNetUnfolder]: 2910/5140 cut-off events. [2023-01-28 08:49:12,806 INFO L131 PetriNetUnfolder]: For 160652/160652 co-relation queries the response was YES. [2023-01-28 08:49:12,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52254 conditions, 5140 events. 2910/5140 cut-off events. For 160652/160652 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30727 event pairs, 491 based on Foata normal form. 4/5144 useless extension candidates. Maximal degree in co-relation 52141. Up to 2510 conditions per place. [2023-01-28 08:49:12,951 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 298 selfloop transitions, 395 changer transitions 0/693 dead transitions. [2023-01-28 08:49:12,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 693 transitions, 22784 flow [2023-01-28 08:49:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:49:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:49:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1693 transitions. [2023-01-28 08:49:12,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441056910569106 [2023-01-28 08:49:12,953 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1693 transitions. [2023-01-28 08:49:12,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1693 transitions. [2023-01-28 08:49:12,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:12,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1693 transitions. [2023-01-28 08:49:12,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.08333333333334) internal successors, (1693), 12 states have internal predecessors, (1693), 0 states have call successors, (0), 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 08:49:12,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:12,957 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:12,957 INFO L175 Difference]: Start difference. First operand has 460 places, 638 transitions, 20834 flow. Second operand 12 states and 1693 transitions. [2023-01-28 08:49:12,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 693 transitions, 22784 flow [2023-01-28 08:49:13,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 693 transitions, 21717 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-01-28 08:49:13,598 INFO L231 Difference]: Finished difference. Result has 459 places, 640 transitions, 20684 flow [2023-01-28 08:49:13,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19780, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20684, PETRI_PLACES=459, PETRI_TRANSITIONS=640} [2023-01-28 08:49:13,599 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 433 predicate places. [2023-01-28 08:49:13,599 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 640 transitions, 20684 flow [2023-01-28 08:49:13,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 08:49:13,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:13,599 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:13,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-01-28 08:49:13,599 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:13,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2122392975, now seen corresponding path program 16 times [2023-01-28 08:49:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164261630] [2023-01-28 08:49:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:49:14,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164261630] [2023-01-28 08:49:14,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164261630] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854762834] [2023-01-28 08:49:14,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:49:14,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:14,676 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:14,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 08:49:14,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:49:14,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:14,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:49:14,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:15,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:15,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:15,195 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 08:49:15,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2023-01-28 08:49:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:15,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:49:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854762834] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:49:15,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:49:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-01-28 08:49:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433074218] [2023-01-28 08:49:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:49:15,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 08:49:15,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:15,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 08:49:15,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-01-28 08:49:15,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 410 [2023-01-28 08:49:15,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 640 transitions, 20684 flow. Second operand has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 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 08:49:15,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:15,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 410 [2023-01-28 08:49:15,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:17,068 INFO L130 PetriNetUnfolder]: 3116/5474 cut-off events. [2023-01-28 08:49:17,068 INFO L131 PetriNetUnfolder]: For 167679/167679 co-relation queries the response was YES. [2023-01-28 08:49:17,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54709 conditions, 5474 events. 3116/5474 cut-off events. For 167679/167679 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32946 event pairs, 577 based on Foata normal form. 4/5478 useless extension candidates. Maximal degree in co-relation 54595. Up to 1618 conditions per place. [2023-01-28 08:49:17,128 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 293 selfloop transitions, 407 changer transitions 0/700 dead transitions. [2023-01-28 08:49:17,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 700 transitions, 22882 flow [2023-01-28 08:49:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 08:49:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 08:49:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1515 transitions. [2023-01-28 08:49:17,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33592017738359203 [2023-01-28 08:49:17,130 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1515 transitions. [2023-01-28 08:49:17,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1515 transitions. [2023-01-28 08:49:17,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:17,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1515 transitions. [2023-01-28 08:49:17,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.72727272727272) internal successors, (1515), 11 states have internal predecessors, (1515), 0 states have call successors, (0), 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 08:49:17,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:49:17,133 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:49:17,133 INFO L175 Difference]: Start difference. First operand has 459 places, 640 transitions, 20684 flow. Second operand 11 states and 1515 transitions. [2023-01-28 08:49:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 700 transitions, 22882 flow [2023-01-28 08:49:17,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 700 transitions, 21888 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-28 08:49:17,892 INFO L231 Difference]: Finished difference. Result has 460 places, 653 transitions, 21026 flow [2023-01-28 08:49:17,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19726, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21026, PETRI_PLACES=460, PETRI_TRANSITIONS=653} [2023-01-28 08:49:17,893 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-01-28 08:49:17,893 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 653 transitions, 21026 flow [2023-01-28 08:49:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 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 08:49:17,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:17,893 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:17,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:18,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-01-28 08:49:18,094 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:18,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash 435157801, now seen corresponding path program 17 times [2023-01-28 08:49:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:18,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730413649] [2023-01-28 08:49:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730413649] [2023-01-28 08:49:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730413649] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722646291] [2023-01-28 08:49:18,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:49:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:18,477 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:18,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 08:49:18,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:49:18,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:18,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 08:49:18,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:18,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:18,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 08:49:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:18,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:49:19,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:49:19,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 143 [2023-01-28 08:49:19,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:49:19,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-01-28 08:49:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722646291] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:21,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:49:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 10] total 27 [2023-01-28 08:49:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105864354] [2023-01-28 08:49:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:49:21,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 08:49:21,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 08:49:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=645, Unknown=13, NotChecked=0, Total=756 [2023-01-28 08:49:21,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 410 [2023-01-28 08:49:21,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 653 transitions, 21026 flow. Second operand has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 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 08:49:21,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:21,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 410 [2023-01-28 08:49:21,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:28,875 INFO L130 PetriNetUnfolder]: 3117/5477 cut-off events. [2023-01-28 08:49:28,876 INFO L131 PetriNetUnfolder]: For 168166/168166 co-relation queries the response was YES. [2023-01-28 08:49:28,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55208 conditions, 5477 events. 3117/5477 cut-off events. For 168166/168166 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32988 event pairs, 700 based on Foata normal form. 2/5479 useless extension candidates. Maximal degree in co-relation 55092. Up to 3304 conditions per place. [2023-01-28 08:49:28,941 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 305 selfloop transitions, 376 changer transitions 0/681 dead transitions. [2023-01-28 08:49:28,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 681 transitions, 22567 flow [2023-01-28 08:49:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:49:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:49:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1712 transitions. [2023-01-28 08:49:28,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34796747967479674 [2023-01-28 08:49:28,943 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1712 transitions. [2023-01-28 08:49:28,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1712 transitions. [2023-01-28 08:49:28,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:28,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1712 transitions. [2023-01-28 08:49:28,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 142.66666666666666) internal successors, (1712), 12 states have internal predecessors, (1712), 0 states have call successors, (0), 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 08:49:28,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:28,947 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:28,947 INFO L175 Difference]: Start difference. First operand has 460 places, 653 transitions, 21026 flow. Second operand 12 states and 1712 transitions. [2023-01-28 08:49:28,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 681 transitions, 22567 flow [2023-01-28 08:49:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 681 transitions, 21956 flow, removed 84 selfloop flow, removed 11 redundant places. [2023-01-28 08:49:29,826 INFO L231 Difference]: Finished difference. Result has 461 places, 654 transitions, 21231 flow [2023-01-28 08:49:29,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20415, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21231, PETRI_PLACES=461, PETRI_TRANSITIONS=654} [2023-01-28 08:49:29,826 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 435 predicate places. [2023-01-28 08:49:29,826 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 654 transitions, 21231 flow [2023-01-28 08:49:29,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 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 08:49:29,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:29,827 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:29,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-01-28 08:49:30,033 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:30,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1693708765, now seen corresponding path program 18 times [2023-01-28 08:49:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:30,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656575827] [2023-01-28 08:49:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:30,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:30,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656575827] [2023-01-28 08:49:30,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656575827] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:30,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285187349] [2023-01-28 08:49:30,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:49:30,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:30,346 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:30,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 08:49:30,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:49:30,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:30,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 08:49:30,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:30,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:30,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 08:49:30,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:49:30,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-01-28 08:49:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:30,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:49:30,890 WARN L839 $PredicateComparison]: unable to prove that (forall ((~scoreB~0.base Int) (v_ArrVal_3878 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3878))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-01-28 08:49:30,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:49:30,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 143 [2023-01-28 08:49:30,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:49:30,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-01-28 08:49:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:31,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285187349] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:49:31,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:49:31,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 25 [2023-01-28 08:49:31,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691398823] [2023-01-28 08:49:31,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:49:31,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 08:49:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 08:49:31,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=510, Unknown=1, NotChecked=46, Total=650 [2023-01-28 08:49:31,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-28 08:49:31,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 654 transitions, 21231 flow. Second operand has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 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 08:49:31,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:31,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-28 08:49:31,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:35,468 INFO L130 PetriNetUnfolder]: 3169/5564 cut-off events. [2023-01-28 08:49:35,469 INFO L131 PetriNetUnfolder]: For 183094/183094 co-relation queries the response was YES. [2023-01-28 08:49:35,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56418 conditions, 5564 events. 3169/5564 cut-off events. For 183094/183094 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33626 event pairs, 694 based on Foata normal form. 4/5568 useless extension candidates. Maximal degree in co-relation 56306. Up to 3304 conditions per place. [2023-01-28 08:49:35,526 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 294 selfloop transitions, 435 changer transitions 0/729 dead transitions. [2023-01-28 08:49:35,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 729 transitions, 24743 flow [2023-01-28 08:49:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:49:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:49:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1673 transitions. [2023-01-28 08:49:35,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34004065040650405 [2023-01-28 08:49:35,528 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1673 transitions. [2023-01-28 08:49:35,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1673 transitions. [2023-01-28 08:49:35,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:35,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1673 transitions. [2023-01-28 08:49:35,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.41666666666666) internal successors, (1673), 12 states have internal predecessors, (1673), 0 states have call successors, (0), 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 08:49:35,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:35,531 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:49:35,532 INFO L175 Difference]: Start difference. First operand has 461 places, 654 transitions, 21231 flow. Second operand 12 states and 1673 transitions. [2023-01-28 08:49:35,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 729 transitions, 24743 flow [2023-01-28 08:49:36,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 729 transitions, 23612 flow, removed 14 selfloop flow, removed 19 redundant places. [2023-01-28 08:49:36,184 INFO L231 Difference]: Finished difference. Result has 453 places, 702 transitions, 22892 flow [2023-01-28 08:49:36,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20182, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=22892, PETRI_PLACES=453, PETRI_TRANSITIONS=702} [2023-01-28 08:49:36,185 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 427 predicate places. [2023-01-28 08:49:36,185 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 702 transitions, 22892 flow [2023-01-28 08:49:36,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 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 08:49:36,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:36,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:36,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:36,386 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:36,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1697579182, now seen corresponding path program 1 times [2023-01-28 08:49:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921482390] [2023-01-28 08:49:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:36,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:36,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921482390] [2023-01-28 08:49:36,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921482390] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:36,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137969042] [2023-01-28 08:49:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:36,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:36,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:36,811 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:36,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 08:49:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:37,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:49:37,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:37,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:49:38,072 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 08:49:38,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 08:49:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137969042] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:49:42,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:49:42,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 31 [2023-01-28 08:49:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093784044] [2023-01-28 08:49:42,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:49:42,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 08:49:42,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 08:49:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-01-28 08:49:42,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 410 [2023-01-28 08:49:42,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 702 transitions, 22892 flow. Second operand has 31 states, 31 states have (on average 129.16129032258064) internal successors, (4004), 31 states have internal predecessors, (4004), 0 states have call successors, (0), 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 08:49:42,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:42,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 410 [2023-01-28 08:49:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:46,784 INFO L130 PetriNetUnfolder]: 5860/10410 cut-off events. [2023-01-28 08:49:46,785 INFO L131 PetriNetUnfolder]: For 288577/288577 co-relation queries the response was YES. [2023-01-28 08:49:46,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97040 conditions, 10410 events. 5860/10410 cut-off events. For 288577/288577 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 70440 event pairs, 322 based on Foata normal form. 304/10714 useless extension candidates. Maximal degree in co-relation 96937. Up to 2557 conditions per place. [2023-01-28 08:49:46,907 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 623 selfloop transitions, 585 changer transitions 6/1214 dead transitions. [2023-01-28 08:49:46,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1214 transitions, 34758 flow [2023-01-28 08:49:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-28 08:49:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-28 08:49:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5518 transitions. [2023-01-28 08:49:46,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32825698988697205 [2023-01-28 08:49:46,911 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5518 transitions. [2023-01-28 08:49:46,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5518 transitions. [2023-01-28 08:49:46,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:46,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5518 transitions. [2023-01-28 08:49:46,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 134.58536585365854) internal successors, (5518), 41 states have internal predecessors, (5518), 0 states have call successors, (0), 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 08:49:46,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 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 08:49:46,922 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 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 08:49:46,922 INFO L175 Difference]: Start difference. First operand has 453 places, 702 transitions, 22892 flow. Second operand 41 states and 5518 transitions. [2023-01-28 08:49:46,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1214 transitions, 34758 flow [2023-01-28 08:49:48,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1214 transitions, 33340 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-01-28 08:49:48,193 INFO L231 Difference]: Finished difference. Result has 503 places, 866 transitions, 27668 flow [2023-01-28 08:49:48,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=21616, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=27668, PETRI_PLACES=503, PETRI_TRANSITIONS=866} [2023-01-28 08:49:48,193 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 477 predicate places. [2023-01-28 08:49:48,194 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 866 transitions, 27668 flow [2023-01-28 08:49:48,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 129.16129032258064) internal successors, (4004), 31 states have internal predecessors, (4004), 0 states have call successors, (0), 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 08:49:48,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:48,194 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:49:48,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:48,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2023-01-28 08:49:48,395 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:49:48,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash -646389568, now seen corresponding path program 2 times [2023-01-28 08:49:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:48,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82551162] [2023-01-28 08:49:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82551162] [2023-01-28 08:49:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82551162] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015521729] [2023-01-28 08:49:48,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:49:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:48,809 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:48,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-28 08:49:49,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:49:49,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:49,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 08:49:49,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:49,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:49:49,697 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 08:49:49,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 08:49:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:49:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015521729] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:49:52,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:49:52,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2023-01-28 08:49:52,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382544038] [2023-01-28 08:49:52,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:49:52,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 08:49:52,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 08:49:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-01-28 08:49:52,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 08:49:52,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 866 transitions, 27668 flow. Second operand has 22 states, 22 states have (on average 136.13636363636363) internal successors, (2995), 22 states have internal predecessors, (2995), 0 states have call successors, (0), 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 08:49:52,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:52,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 08:49:52,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:57,904 INFO L130 PetriNetUnfolder]: 7368/13503 cut-off events. [2023-01-28 08:49:57,905 INFO L131 PetriNetUnfolder]: For 411258/411258 co-relation queries the response was YES. [2023-01-28 08:49:58,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127459 conditions, 13503 events. 7368/13503 cut-off events. For 411258/411258 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 100690 event pairs, 1763 based on Foata normal form. 230/13733 useless extension candidates. Maximal degree in co-relation 127335. Up to 4835 conditions per place. [2023-01-28 08:49:58,076 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 685 selfloop transitions, 604 changer transitions 0/1289 dead transitions. [2023-01-28 08:49:58,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1289 transitions, 38659 flow [2023-01-28 08:49:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 08:49:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 08:49:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3868 transitions. [2023-01-28 08:49:58,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34941282746160796 [2023-01-28 08:49:58,079 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3868 transitions. [2023-01-28 08:49:58,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3868 transitions. [2023-01-28 08:49:58,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:58,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3868 transitions. [2023-01-28 08:49:58,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 143.25925925925927) internal successors, (3868), 27 states have internal predecessors, (3868), 0 states have call successors, (0), 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 08:49:58,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 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 08:49:58,086 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 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 08:49:58,086 INFO L175 Difference]: Start difference. First operand has 503 places, 866 transitions, 27668 flow. Second operand 27 states and 3868 transitions. [2023-01-28 08:49:58,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1289 transitions, 38659 flow [2023-01-28 08:50:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1289 transitions, 37143 flow, removed 300 selfloop flow, removed 23 redundant places. [2023-01-28 08:50:00,992 INFO L231 Difference]: Finished difference. Result has 519 places, 1084 transitions, 34731 flow [2023-01-28 08:50:00,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=26236, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=34731, PETRI_PLACES=519, PETRI_TRANSITIONS=1084} [2023-01-28 08:50:00,993 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 493 predicate places. [2023-01-28 08:50:00,993 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1084 transitions, 34731 flow [2023-01-28 08:50:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 136.13636363636363) internal successors, (2995), 22 states have internal predecessors, (2995), 0 states have call successors, (0), 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 08:50:00,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:50:00,994 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:50:00,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-28 08:50:01,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:50:01,194 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:50:01,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:50:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1623553708, now seen corresponding path program 3 times [2023-01-28 08:50:01,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:50:01,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173295897] [2023-01-28 08:50:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:50:01,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:50:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:50:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:50:01,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:50:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173295897] [2023-01-28 08:50:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173295897] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:50:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218613380] [2023-01-28 08:50:01,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:50:01,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:50:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:50:01,841 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:50:01,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-28 08:50:02,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:50:02,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:50:02,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:50:02,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:50:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:50:02,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:50:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218613380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:50:02,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:50:02,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 08:50:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146854396] [2023-01-28 08:50:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:50:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:50:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:50:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:50:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-01-28 08:50:02,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:50:02,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1084 transitions, 34731 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:50:02,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:50:02,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:50:02,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:50:07,912 INFO L130 PetriNetUnfolder]: 7340/13395 cut-off events. [2023-01-28 08:50:07,912 INFO L131 PetriNetUnfolder]: For 453830/453830 co-relation queries the response was YES. [2023-01-28 08:50:08,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132351 conditions, 13395 events. 7340/13395 cut-off events. For 453830/453830 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 99201 event pairs, 1364 based on Foata normal form. 2/13397 useless extension candidates. Maximal degree in co-relation 132216. Up to 6555 conditions per place. [2023-01-28 08:50:08,060 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 854 selfloop transitions, 263 changer transitions 2/1119 dead transitions. [2023-01-28 08:50:08,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1119 transitions, 37203 flow [2023-01-28 08:50:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:50:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:50:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1636 transitions. [2023-01-28 08:50:08,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33252032520325203 [2023-01-28 08:50:08,064 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1636 transitions. [2023-01-28 08:50:08,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1636 transitions. [2023-01-28 08:50:08,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:50:08,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1636 transitions. [2023-01-28 08:50:08,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.33333333333334) internal successors, (1636), 12 states have internal predecessors, (1636), 0 states have call successors, (0), 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 08:50:08,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:50:08,117 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:50:08,117 INFO L175 Difference]: Start difference. First operand has 519 places, 1084 transitions, 34731 flow. Second operand 12 states and 1636 transitions. [2023-01-28 08:50:08,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1119 transitions, 37203 flow [2023-01-28 08:50:11,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1119 transitions, 36345 flow, removed 327 selfloop flow, removed 7 redundant places. [2023-01-28 08:50:11,218 INFO L231 Difference]: Finished difference. Result has 521 places, 1074 transitions, 34085 flow [2023-01-28 08:50:11,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33587, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=34085, PETRI_PLACES=521, PETRI_TRANSITIONS=1074} [2023-01-28 08:50:11,219 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 495 predicate places. [2023-01-28 08:50:11,219 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 1074 transitions, 34085 flow [2023-01-28 08:50:11,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:50:11,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:50:11,219 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:50:11,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-28 08:50:11,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:50:11,420 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:50:11,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:50:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1737934884, now seen corresponding path program 4 times [2023-01-28 08:50:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:50:11,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474204329] [2023-01-28 08:50:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:50:11,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:50:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:50:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:50:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:50:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474204329] [2023-01-28 08:50:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474204329] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:50:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112211496] [2023-01-28 08:50:11,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:50:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:50:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:50:11,867 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:50:11,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-28 08:50:12,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:50:12,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:50:12,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 08:50:12,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:50:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:50:12,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:50:13,873 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:50:13,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 294 [2023-01-28 08:52:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:52:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112211496] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:52:11,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:52:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-01-28 08:52:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598082628] [2023-01-28 08:52:11,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:52:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 08:52:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:52:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 08:52:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2023-01-28 08:52:11,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 410 [2023-01-28 08:52:11,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1074 transitions, 34085 flow. Second operand has 27 states, 27 states have (on average 129.25925925925927) internal successors, (3490), 27 states have internal predecessors, (3490), 0 states have call successors, (0), 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 08:52:11,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:52:11,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 410 [2023-01-28 08:52:11,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:52:22,474 INFO L130 PetriNetUnfolder]: 8628/16066 cut-off events. [2023-01-28 08:52:22,475 INFO L131 PetriNetUnfolder]: For 501368/501368 co-relation queries the response was YES. [2023-01-28 08:52:22,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152623 conditions, 16066 events. 8628/16066 cut-off events. For 501368/501368 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 126301 event pairs, 1127 based on Foata normal form. 61/16127 useless extension candidates. Maximal degree in co-relation 152489. Up to 5442 conditions per place. [2023-01-28 08:52:22,663 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 694 selfloop transitions, 788 changer transitions 5/1487 dead transitions. [2023-01-28 08:52:22,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1487 transitions, 44135 flow [2023-01-28 08:52:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-01-28 08:52:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-01-28 08:52:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 7598 transitions. [2023-01-28 08:52:22,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3251176722293539 [2023-01-28 08:52:22,668 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 7598 transitions. [2023-01-28 08:52:22,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 7598 transitions. [2023-01-28 08:52:22,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:52:22,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 7598 transitions. [2023-01-28 08:52:22,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 133.2982456140351) internal successors, (7598), 57 states have internal predecessors, (7598), 0 states have call successors, (0), 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 08:52:22,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 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 08:52:22,683 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 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 08:52:22,684 INFO L175 Difference]: Start difference. First operand has 521 places, 1074 transitions, 34085 flow. Second operand 57 states and 7598 transitions. [2023-01-28 08:52:22,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1487 transitions, 44135 flow [2023-01-28 08:52:26,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1487 transitions, 43466 flow, removed 29 selfloop flow, removed 9 redundant places. [2023-01-28 08:52:26,313 INFO L231 Difference]: Finished difference. Result has 583 places, 1236 transitions, 40518 flow [2023-01-28 08:52:26,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33558, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=40518, PETRI_PLACES=583, PETRI_TRANSITIONS=1236} [2023-01-28 08:52:26,314 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 557 predicate places. [2023-01-28 08:52:26,314 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 1236 transitions, 40518 flow [2023-01-28 08:52:26,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 129.25925925925927) internal successors, (3490), 27 states have internal predecessors, (3490), 0 states have call successors, (0), 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 08:52:26,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:52:26,315 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:52:26,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-28 08:52:26,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:52:26,520 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:52:26,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:52:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2048500918, now seen corresponding path program 5 times [2023-01-28 08:52:26,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:52:26,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860505261] [2023-01-28 08:52:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:52:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:52:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:52:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:52:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:52:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860505261] [2023-01-28 08:52:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860505261] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:52:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146009776] [2023-01-28 08:52:27,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:52:27,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:52:27,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:52:27,154 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:52:27,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-28 08:52:27,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:52:27,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:52:27,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:52:27,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:52:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:52:27,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:52:27,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146009776] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:52:27,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:52:27,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 08:52:27,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067068406] [2023-01-28 08:52:27,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:52:27,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:52:27,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:52:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:52:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2023-01-28 08:52:27,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:52:27,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1236 transitions, 40518 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:52:27,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:52:27,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:52:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:52:35,036 INFO L130 PetriNetUnfolder]: 8611/16026 cut-off events. [2023-01-28 08:52:35,036 INFO L131 PetriNetUnfolder]: For 558972/558972 co-relation queries the response was YES. [2023-01-28 08:52:35,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159454 conditions, 16026 events. 8611/16026 cut-off events. For 558972/558972 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 125773 event pairs, 1739 based on Foata normal form. 2/16028 useless extension candidates. Maximal degree in co-relation 159303. Up to 8076 conditions per place. [2023-01-28 08:52:35,228 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 998 selfloop transitions, 269 changer transitions 2/1269 dead transitions. [2023-01-28 08:52:35,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 1269 transitions, 43296 flow [2023-01-28 08:52:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:52:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:52:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1629 transitions. [2023-01-28 08:52:35,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3310975609756098 [2023-01-28 08:52:35,230 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1629 transitions. [2023-01-28 08:52:35,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1629 transitions. [2023-01-28 08:52:35,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:52:35,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1629 transitions. [2023-01-28 08:52:35,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.75) internal successors, (1629), 12 states have internal predecessors, (1629), 0 states have call successors, (0), 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 08:52:35,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:52:35,233 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:52:35,234 INFO L175 Difference]: Start difference. First operand has 583 places, 1236 transitions, 40518 flow. Second operand 12 states and 1629 transitions. [2023-01-28 08:52:35,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 1269 transitions, 43296 flow [2023-01-28 08:52:40,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 1269 transitions, 42327 flow, removed 200 selfloop flow, removed 25 redundant places. [2023-01-28 08:52:40,323 INFO L231 Difference]: Finished difference. Result has 568 places, 1232 transitions, 39897 flow [2023-01-28 08:52:40,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39390, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=39897, PETRI_PLACES=568, PETRI_TRANSITIONS=1232} [2023-01-28 08:52:40,324 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 542 predicate places. [2023-01-28 08:52:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 1232 transitions, 39897 flow [2023-01-28 08:52:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:52:40,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:52:40,324 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:52:40,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-01-28 08:52:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:52:40,525 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:52:40,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:52:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 108172946, now seen corresponding path program 6 times [2023-01-28 08:52:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:52:40,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098854779] [2023-01-28 08:52:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:52:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:52:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:52:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:52:41,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:52:41,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098854779] [2023-01-28 08:52:41,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098854779] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:52:41,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191435779] [2023-01-28 08:52:41,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:52:41,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:52:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:52:41,791 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:52:41,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-28 08:52:42,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:52:42,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:52:42,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:52:42,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:52:42,412 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 08:52:42,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 08:52:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:52:42,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:52:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191435779] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:52:42,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:52:42,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [22] total 32 [2023-01-28 08:52:42,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746869463] [2023-01-28 08:52:42,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:52:42,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:52:42,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:52:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:52:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2023-01-28 08:52:42,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:52:42,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 1232 transitions, 39897 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:52:42,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:52:42,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:52:42,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:52:49,344 INFO L130 PetriNetUnfolder]: 8582/15915 cut-off events. [2023-01-28 08:52:49,344 INFO L131 PetriNetUnfolder]: For 566846/566846 co-relation queries the response was YES. [2023-01-28 08:52:49,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158457 conditions, 15915 events. 8582/15915 cut-off events. For 566846/566846 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 124342 event pairs, 1745 based on Foata normal form. 2/15917 useless extension candidates. Maximal degree in co-relation 158307. Up to 8088 conditions per place. [2023-01-28 08:52:49,551 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 991 selfloop transitions, 263 changer transitions 4/1258 dead transitions. [2023-01-28 08:52:49,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1258 transitions, 42563 flow [2023-01-28 08:52:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 08:52:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 08:52:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1492 transitions. [2023-01-28 08:52:49,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33082039911308203 [2023-01-28 08:52:49,553 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1492 transitions. [2023-01-28 08:52:49,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1492 transitions. [2023-01-28 08:52:49,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:52:49,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1492 transitions. [2023-01-28 08:52:49,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.63636363636363) internal successors, (1492), 11 states have internal predecessors, (1492), 0 states have call successors, (0), 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 08:52:49,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:52:49,556 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:52:49,556 INFO L175 Difference]: Start difference. First operand has 568 places, 1232 transitions, 39897 flow. Second operand 11 states and 1492 transitions. [2023-01-28 08:52:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1258 transitions, 42563 flow [2023-01-28 08:52:54,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 1258 transitions, 42020 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-01-28 08:52:54,698 INFO L231 Difference]: Finished difference. Result has 563 places, 1224 transitions, 39610 flow [2023-01-28 08:52:54,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39143, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=39610, PETRI_PLACES=563, PETRI_TRANSITIONS=1224} [2023-01-28 08:52:54,699 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 537 predicate places. [2023-01-28 08:52:54,699 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 1224 transitions, 39610 flow [2023-01-28 08:52:54,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:52:54,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:52:54,699 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:52:54,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-28 08:52:54,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-01-28 08:52:54,900 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:52:54,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:52:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1314119378, now seen corresponding path program 7 times [2023-01-28 08:52:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:52:54,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522333929] [2023-01-28 08:52:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:52:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:52:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:52:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:52:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:52:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522333929] [2023-01-28 08:52:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522333929] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:52:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632002083] [2023-01-28 08:52:55,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 08:52:55,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:52:55,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:52:55,976 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:52:55,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-28 08:52:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:52:56,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:52:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:52:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:52:56,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:52:57,174 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 08:52:57,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 08:53:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:53:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632002083] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:53:03,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:53:03,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 9] total 40 [2023-01-28 08:53:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151624234] [2023-01-28 08:53:03,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:53:03,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 08:53:03,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:53:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 08:53:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 08:53:03,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 410 [2023-01-28 08:53:03,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 1224 transitions, 39610 flow. Second operand has 40 states, 40 states have (on average 103.7) internal successors, (4148), 40 states have internal predecessors, (4148), 0 states have call successors, (0), 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 08:53:03,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:53:03,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 410 [2023-01-28 08:53:03,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:53:21,135 INFO L130 PetriNetUnfolder]: 17535/32591 cut-off events. [2023-01-28 08:53:21,135 INFO L131 PetriNetUnfolder]: For 1150295/1150295 co-relation queries the response was YES. [2023-01-28 08:53:21,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322013 conditions, 32591 events. 17535/32591 cut-off events. For 1150295/1150295 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 285864 event pairs, 2400 based on Foata normal form. 132/32723 useless extension candidates. Maximal degree in co-relation 321866. Up to 7529 conditions per place. [2023-01-28 08:53:21,692 INFO L137 encePairwiseOnDemand]: 392/410 looper letters, 1343 selfloop transitions, 1432 changer transitions 0/2775 dead transitions. [2023-01-28 08:53:21,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 2775 transitions, 88894 flow [2023-01-28 08:53:21,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-28 08:53:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-28 08:53:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6867 transitions. [2023-01-28 08:53:21,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2658536585365854 [2023-01-28 08:53:21,698 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6867 transitions. [2023-01-28 08:53:21,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6867 transitions. [2023-01-28 08:53:21,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:53:21,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6867 transitions. [2023-01-28 08:53:21,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 109.0) internal successors, (6867), 63 states have internal predecessors, (6867), 0 states have call successors, (0), 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 08:53:21,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 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 08:53:21,715 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 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 08:53:21,715 INFO L175 Difference]: Start difference. First operand has 563 places, 1224 transitions, 39610 flow. Second operand 63 states and 6867 transitions. [2023-01-28 08:53:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 2775 transitions, 88894 flow [2023-01-28 08:53:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2775 transitions, 87210 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-01-28 08:53:39,339 INFO L231 Difference]: Finished difference. Result has 615 places, 1964 transitions, 66485 flow [2023-01-28 08:53:39,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=38452, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=683, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=66485, PETRI_PLACES=615, PETRI_TRANSITIONS=1964} [2023-01-28 08:53:39,340 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 589 predicate places. [2023-01-28 08:53:39,340 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 1964 transitions, 66485 flow [2023-01-28 08:53:39,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 103.7) internal successors, (4148), 40 states have internal predecessors, (4148), 0 states have call successors, (0), 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 08:53:39,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:53:39,341 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:53:39,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-28 08:53:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-01-28 08:53:39,542 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:53:39,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:53:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -16981364, now seen corresponding path program 8 times [2023-01-28 08:53:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:53:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512687654] [2023-01-28 08:53:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:53:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:53:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:53:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:53:40,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:53:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512687654] [2023-01-28 08:53:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512687654] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:53:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556316313] [2023-01-28 08:53:40,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:53:40,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:53:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:53:40,253 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:53:40,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-28 08:53:40,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:53:40,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:53:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 08:53:40,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:53:40,829 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 08:53:40,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 08:53:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:53:40,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:53:40,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556316313] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:53:40,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:53:40,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-28 08:53:40,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270742105] [2023-01-28 08:53:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:53:40,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:53:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:53:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:53:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2023-01-28 08:53:40,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:53:40,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 1964 transitions, 66485 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:53:40,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:53:40,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:53:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:53:58,585 INFO L130 PetriNetUnfolder]: 17519/32559 cut-off events. [2023-01-28 08:53:58,585 INFO L131 PetriNetUnfolder]: For 1166746/1166746 co-relation queries the response was YES. [2023-01-28 08:53:59,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327979 conditions, 32559 events. 17519/32559 cut-off events. For 1166746/1166746 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 285808 event pairs, 3620 based on Foata normal form. 4/32563 useless extension candidates. Maximal degree in co-relation 327830. Up to 16667 conditions per place. [2023-01-28 08:53:59,301 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1435 selfloop transitions, 549 changer transitions 8/1992 dead transitions. [2023-01-28 08:53:59,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 1992 transitions, 70615 flow [2023-01-28 08:53:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:53:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:53:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1622 transitions. [2023-01-28 08:53:59,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32967479674796746 [2023-01-28 08:53:59,304 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1622 transitions. [2023-01-28 08:53:59,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1622 transitions. [2023-01-28 08:53:59,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:53:59,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1622 transitions. [2023-01-28 08:53:59,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.16666666666666) internal successors, (1622), 12 states have internal predecessors, (1622), 0 states have call successors, (0), 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 08:53:59,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:53:59,308 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:53:59,308 INFO L175 Difference]: Start difference. First operand has 615 places, 1964 transitions, 66485 flow. Second operand 12 states and 1622 transitions. [2023-01-28 08:53:59,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 1992 transitions, 70615 flow [2023-01-28 08:54:17,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 1992 transitions, 69961 flow, removed 54 selfloop flow, removed 20 redundant places. [2023-01-28 08:54:17,484 INFO L231 Difference]: Finished difference. Result has 605 places, 1954 transitions, 66537 flow [2023-01-28 08:54:17,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65633, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=66537, PETRI_PLACES=605, PETRI_TRANSITIONS=1954} [2023-01-28 08:54:17,485 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 579 predicate places. [2023-01-28 08:54:17,485 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 1954 transitions, 66537 flow [2023-01-28 08:54:17,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:54:17,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:54:17,485 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:54:17,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-01-28 08:54:17,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-01-28 08:54:17,689 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:54:17,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:54:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2121312068, now seen corresponding path program 9 times [2023-01-28 08:54:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:54:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318026867] [2023-01-28 08:54:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:54:17,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:54:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:54:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:54:18,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:54:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318026867] [2023-01-28 08:54:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318026867] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:54:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378645193] [2023-01-28 08:54:18,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:54:18,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:54:18,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:54:18,964 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:54:18,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-28 08:54:19,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:54:19,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:54:19,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:54:19,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:54:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:54:19,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:54:19,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378645193] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:54:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:54:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [22] total 32 [2023-01-28 08:54:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892615485] [2023-01-28 08:54:19,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:54:19,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:54:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:54:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:54:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2023-01-28 08:54:19,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:54:19,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 1954 transitions, 66537 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:54:19,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:54:19,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:54:19,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:54:37,246 INFO L130 PetriNetUnfolder]: 17457/32329 cut-off events. [2023-01-28 08:54:37,246 INFO L131 PetriNetUnfolder]: For 1207858/1207858 co-relation queries the response was YES. [2023-01-28 08:54:37,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330187 conditions, 32329 events. 17457/32329 cut-off events. For 1207858/1207858 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 281748 event pairs, 3604 based on Foata normal form. 4/32333 useless extension candidates. Maximal degree in co-relation 330041. Up to 16643 conditions per place. [2023-01-28 08:54:38,033 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1422 selfloop transitions, 554 changer transitions 3/1979 dead transitions. [2023-01-28 08:54:38,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1979 transitions, 70498 flow [2023-01-28 08:54:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 08:54:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 08:54:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1757 transitions. [2023-01-28 08:54:38,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296435272045028 [2023-01-28 08:54:38,035 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1757 transitions. [2023-01-28 08:54:38,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1757 transitions. [2023-01-28 08:54:38,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:54:38,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1757 transitions. [2023-01-28 08:54:38,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.15384615384616) internal successors, (1757), 13 states have internal predecessors, (1757), 0 states have call successors, (0), 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 08:54:38,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:54:38,040 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 08:54:38,040 INFO L175 Difference]: Start difference. First operand has 605 places, 1954 transitions, 66537 flow. Second operand 13 states and 1757 transitions. [2023-01-28 08:54:38,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 1979 transitions, 70498 flow [2023-01-28 08:54:55,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 1979 transitions, 69176 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-01-28 08:54:55,775 INFO L231 Difference]: Finished difference. Result has 599 places, 1941 transitions, 65886 flow [2023-01-28 08:54:55,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64836, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=65886, PETRI_PLACES=599, PETRI_TRANSITIONS=1941} [2023-01-28 08:54:55,776 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 573 predicate places. [2023-01-28 08:54:55,777 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 1941 transitions, 65886 flow [2023-01-28 08:54:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:54:55,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:54:55,777 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:54:55,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-01-28 08:54:55,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-01-28 08:54:55,977 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:54:55,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:54:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1936906094, now seen corresponding path program 10 times [2023-01-28 08:54:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:54:55,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63378030] [2023-01-28 08:54:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:54:55,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:54:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:54:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:54:56,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:54:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63378030] [2023-01-28 08:54:56,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63378030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:54:56,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:54:56,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:54:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291848536] [2023-01-28 08:54:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:54:56,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:54:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:54:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:54:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:54:56,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 08:54:56,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 1941 transitions, 65886 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:54:56,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:54:56,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 08:54:56,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:55:14,402 INFO L130 PetriNetUnfolder]: 17457/32339 cut-off events. [2023-01-28 08:55:14,402 INFO L131 PetriNetUnfolder]: For 1196342/1196342 co-relation queries the response was YES. [2023-01-28 08:55:14,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329447 conditions, 32339 events. 17457/32339 cut-off events. For 1196342/1196342 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282051 event pairs, 7744 based on Foata normal form. 4/32343 useless extension candidates. Maximal degree in co-relation 329301. Up to 30373 conditions per place. [2023-01-28 08:55:15,017 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1634 selfloop transitions, 318 changer transitions 12/1964 dead transitions. [2023-01-28 08:55:15,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1964 transitions, 70133 flow [2023-01-28 08:55:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:55:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:55:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1401 transitions. [2023-01-28 08:55:15,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34170731707317076 [2023-01-28 08:55:15,019 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1401 transitions. [2023-01-28 08:55:15,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1401 transitions. [2023-01-28 08:55:15,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:55:15,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1401 transitions. [2023-01-28 08:55:15,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.1) internal successors, (1401), 10 states have internal predecessors, (1401), 0 states have call successors, (0), 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 08:55:15,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:55:15,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:55:15,022 INFO L175 Difference]: Start difference. First operand has 599 places, 1941 transitions, 65886 flow. Second operand 10 states and 1401 transitions. [2023-01-28 08:55:15,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1964 transitions, 70133 flow [2023-01-28 08:55:31,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 1964 transitions, 69034 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-01-28 08:55:32,023 INFO L231 Difference]: Finished difference. Result has 595 places, 1937 transitions, 65343 flow [2023-01-28 08:55:32,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64787, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=65343, PETRI_PLACES=595, PETRI_TRANSITIONS=1937} [2023-01-28 08:55:32,024 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 569 predicate places. [2023-01-28 08:55:32,025 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 1937 transitions, 65343 flow [2023-01-28 08:55:32,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:55:32,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:55:32,025 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:55:32,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-01-28 08:55:32,025 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:55:32,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:55:32,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2101774316, now seen corresponding path program 11 times [2023-01-28 08:55:32,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:55:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190316773] [2023-01-28 08:55:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:55:32,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:55:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:55:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 08:55:32,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:55:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190316773] [2023-01-28 08:55:32,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190316773] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:55:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490388783] [2023-01-28 08:55:32,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:55:32,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:55:32,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:55:32,933 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:55:32,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-28 08:55:33,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:55:33,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:55:33,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:55:33,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:55:33,585 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 08:55:33,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-01-28 08:55:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:55:33,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:55:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490388783] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:55:33,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:55:33,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 29 [2023-01-28 08:55:33,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125697688] [2023-01-28 08:55:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:55:33,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:55:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:55:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:55:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-01-28 08:55:33,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-28 08:55:33,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 1937 transitions, 65343 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:55:33,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:55:33,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-28 08:55:33,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:55:53,204 INFO L130 PetriNetUnfolder]: 17445/32309 cut-off events. [2023-01-28 08:55:53,204 INFO L131 PetriNetUnfolder]: For 1152870/1152870 co-relation queries the response was YES. [2023-01-28 08:55:53,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324702 conditions, 32309 events. 17445/32309 cut-off events. For 1152870/1152870 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 281748 event pairs, 3616 based on Foata normal form. 4/32313 useless extension candidates. Maximal degree in co-relation 324555. Up to 16667 conditions per place. [2023-01-28 08:55:54,079 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1436 selfloop transitions, 520 changer transitions 8/1964 dead transitions. [2023-01-28 08:55:54,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 1964 transitions, 69447 flow [2023-01-28 08:55:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 08:55:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 08:55:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1486 transitions. [2023-01-28 08:55:54,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.329490022172949 [2023-01-28 08:55:54,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1486 transitions. [2023-01-28 08:55:54,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1486 transitions. [2023-01-28 08:55:54,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:55:54,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1486 transitions. [2023-01-28 08:55:54,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.0909090909091) internal successors, (1486), 11 states have internal predecessors, (1486), 0 states have call successors, (0), 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 08:55:54,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:55:54,084 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:55:54,084 INFO L175 Difference]: Start difference. First operand has 595 places, 1937 transitions, 65343 flow. Second operand 11 states and 1486 transitions. [2023-01-28 08:55:54,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 1964 transitions, 69447 flow [2023-01-28 08:56:12,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 1964 transitions, 68804 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-28 08:56:12,167 INFO L231 Difference]: Finished difference. Result has 596 places, 1931 transitions, 65505 flow [2023-01-28 08:56:12,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64590, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=65505, PETRI_PLACES=596, PETRI_TRANSITIONS=1931} [2023-01-28 08:56:12,169 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 570 predicate places. [2023-01-28 08:56:12,169 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 1931 transitions, 65505 flow [2023-01-28 08:56:12,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 08:56:12,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:56:12,169 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:56:12,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-01-28 08:56:12,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:56:12,375 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:56:12,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:56:12,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1636900852, now seen corresponding path program 12 times [2023-01-28 08:56:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:56:12,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79024155] [2023-01-28 08:56:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:56:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:56:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:56:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:56:12,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:56:12,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79024155] [2023-01-28 08:56:12,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79024155] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:56:12,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:56:12,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:56:12,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695977253] [2023-01-28 08:56:12,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:56:12,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:56:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:56:12,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:56:12,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:56:12,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 08:56:12,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 1931 transitions, 65505 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:56:12,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:56:12,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 08:56:12,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:56:30,489 INFO L130 PetriNetUnfolder]: 17435/32291 cut-off events. [2023-01-28 08:56:30,490 INFO L131 PetriNetUnfolder]: For 1191783/1191783 co-relation queries the response was YES. [2023-01-28 08:56:30,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328753 conditions, 32291 events. 17435/32291 cut-off events. For 1191783/1191783 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 281595 event pairs, 7716 based on Foata normal form. 4/32295 useless extension candidates. Maximal degree in co-relation 328605. Up to 30365 conditions per place. [2023-01-28 08:56:30,986 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1631 selfloop transitions, 307 changer transitions 10/1948 dead transitions. [2023-01-28 08:56:30,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1948 transitions, 69458 flow [2023-01-28 08:56:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:56:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:56:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1675 transitions. [2023-01-28 08:56:30,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3404471544715447 [2023-01-28 08:56:30,988 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1675 transitions. [2023-01-28 08:56:30,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1675 transitions. [2023-01-28 08:56:30,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:56:30,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1675 transitions. [2023-01-28 08:56:30,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.58333333333334) internal successors, (1675), 12 states have internal predecessors, (1675), 0 states have call successors, (0), 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 08:56:30,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:56:30,991 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 08:56:30,991 INFO L175 Difference]: Start difference. First operand has 596 places, 1931 transitions, 65505 flow. Second operand 12 states and 1675 transitions. [2023-01-28 08:56:30,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1948 transitions, 69458 flow [2023-01-28 08:56:48,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 1948 transitions, 68349 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-01-28 08:56:49,037 INFO L231 Difference]: Finished difference. Result has 596 places, 1922 transitions, 64703 flow [2023-01-28 08:56:49,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64290, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=64703, PETRI_PLACES=596, PETRI_TRANSITIONS=1922} [2023-01-28 08:56:49,039 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 570 predicate places. [2023-01-28 08:56:49,039 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 1922 transitions, 64703 flow [2023-01-28 08:56:49,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:56:49,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:56:49,039 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:56:49,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-01-28 08:56:49,039 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:56:49,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:56:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash -239187364, now seen corresponding path program 13 times [2023-01-28 08:56:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:56:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311150673] [2023-01-28 08:56:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:56:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:56:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:56:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:56:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:56:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311150673] [2023-01-28 08:56:49,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311150673] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:56:49,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:56:49,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:56:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695586219] [2023-01-28 08:56:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:56:49,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:56:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:56:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:56:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:56:49,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 08:56:49,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 1922 transitions, 64703 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:56:49,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:56:49,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 08:56:49,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:57:08,199 INFO L130 PetriNetUnfolder]: 17425/32267 cut-off events. [2023-01-28 08:57:08,199 INFO L131 PetriNetUnfolder]: For 1146789/1146789 co-relation queries the response was YES. [2023-01-28 08:57:08,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324031 conditions, 32267 events. 17425/32267 cut-off events. For 1146789/1146789 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 281357 event pairs, 7738 based on Foata normal form. 4/32271 useless extension candidates. Maximal degree in co-relation 323883. Up to 30361 conditions per place. [2023-01-28 08:57:08,786 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1629 selfloop transitions, 304 changer transitions 3/1936 dead transitions. [2023-01-28 08:57:08,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 1936 transitions, 68611 flow [2023-01-28 08:57:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:57:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:57:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1402 transitions. [2023-01-28 08:57:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34195121951219515 [2023-01-28 08:57:08,788 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1402 transitions. [2023-01-28 08:57:08,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1402 transitions. [2023-01-28 08:57:08,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:57:08,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1402 transitions. [2023-01-28 08:57:08,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.2) internal successors, (1402), 10 states have internal predecessors, (1402), 0 states have call successors, (0), 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 08:57:08,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:57:08,790 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:57:08,791 INFO L175 Difference]: Start difference. First operand has 596 places, 1922 transitions, 64703 flow. Second operand 10 states and 1402 transitions. [2023-01-28 08:57:08,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 1936 transitions, 68611 flow [2023-01-28 08:57:25,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 1936 transitions, 67953 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-01-28 08:57:25,842 INFO L231 Difference]: Finished difference. Result has 589 places, 1918 transitions, 64479 flow [2023-01-28 08:57:25,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=63931, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1920, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=64479, PETRI_PLACES=589, PETRI_TRANSITIONS=1918} [2023-01-28 08:57:25,844 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 563 predicate places. [2023-01-28 08:57:25,844 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 1918 transitions, 64479 flow [2023-01-28 08:57:25,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:57:25,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:57:25,844 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:57:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-01-28 08:57:25,844 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:57:25,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:57:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 83568858, now seen corresponding path program 14 times [2023-01-28 08:57:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:57:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135665893] [2023-01-28 08:57:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:57:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:57:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:57:26,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:57:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135665893] [2023-01-28 08:57:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135665893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:57:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020225661] [2023-01-28 08:57:26,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:57:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:57:26,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:57:26,531 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:57:26,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-28 08:57:26,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:57:26,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:57:26,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 08:57:26,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:57:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:57:27,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:57:27,505 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-28 08:57:27,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-28 08:57:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:57:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020225661] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:57:28,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:57:28,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 9] total 30 [2023-01-28 08:57:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17719400] [2023-01-28 08:57:28,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:57:28,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 08:57:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:57:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 08:57:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2023-01-28 08:57:28,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 410 [2023-01-28 08:57:28,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 1918 transitions, 64479 flow. Second operand has 30 states, 30 states have (on average 115.93333333333334) internal successors, (3478), 30 states have internal predecessors, (3478), 0 states have call successors, (0), 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 08:57:28,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:57:28,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 410 [2023-01-28 08:57:28,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:57:46,878 INFO L130 PetriNetUnfolder]: 17607/32577 cut-off events. [2023-01-28 08:57:46,879 INFO L131 PetriNetUnfolder]: For 1167205/1167205 co-relation queries the response was YES. [2023-01-28 08:57:47,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327615 conditions, 32577 events. 17607/32577 cut-off events. For 1167205/1167205 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 284215 event pairs, 5777 based on Foata normal form. 132/32709 useless extension candidates. Maximal degree in co-relation 327469. Up to 22962 conditions per place. [2023-01-28 08:57:47,383 INFO L137 encePairwiseOnDemand]: 393/410 looper letters, 997 selfloop transitions, 1000 changer transitions 0/1997 dead transitions. [2023-01-28 08:57:47,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 1997 transitions, 69836 flow [2023-01-28 08:57:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 08:57:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 08:57:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1936 transitions. [2023-01-28 08:57:47,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2951219512195122 [2023-01-28 08:57:47,385 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1936 transitions. [2023-01-28 08:57:47,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1936 transitions. [2023-01-28 08:57:47,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:57:47,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1936 transitions. [2023-01-28 08:57:47,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.0) internal successors, (1936), 16 states have internal predecessors, (1936), 0 states have call successors, (0), 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 08:57:47,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 08:57:47,389 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 08:57:47,389 INFO L175 Difference]: Start difference. First operand has 589 places, 1918 transitions, 64479 flow. Second operand 16 states and 1936 transitions. [2023-01-28 08:57:47,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 1997 transitions, 69836 flow [2023-01-28 08:58:04,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 1997 transitions, 68957 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 08:58:04,862 INFO L231 Difference]: Finished difference. Result has 597 places, 1935 transitions, 67044 flow [2023-01-28 08:58:04,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=63600, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=983, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=67044, PETRI_PLACES=597, PETRI_TRANSITIONS=1935} [2023-01-28 08:58:04,864 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 571 predicate places. [2023-01-28 08:58:04,864 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 1935 transitions, 67044 flow [2023-01-28 08:58:04,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 115.93333333333334) internal successors, (3478), 30 states have internal predecessors, (3478), 0 states have call successors, (0), 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 08:58:04,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:58:04,864 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:58:04,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-01-28 08:58:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2023-01-28 08:58:05,070 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:58:05,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:58:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash 459322964, now seen corresponding path program 15 times [2023-01-28 08:58:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:58:05,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580963062] [2023-01-28 08:58:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:58:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:58:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:58:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-28 08:58:05,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:58:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580963062] [2023-01-28 08:58:05,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580963062] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:58:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93831341] [2023-01-28 08:58:05,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:58:05,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:58:05,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:58:05,748 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:58:05,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-28 08:58:06,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:58:06,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:58:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 08:58:06,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:58:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:58:06,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:58:06,993 INFO L321 Elim1Store]: treesize reduction 66, result has 79.8 percent of original size [2023-01-28 08:58:06,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 182 treesize of output 306 [2023-01-28 08:58:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:58:09,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93831341] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:58:09,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:58:09,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 10] total 37 [2023-01-28 08:58:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324156439] [2023-01-28 08:58:09,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:58:09,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-01-28 08:58:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:58:09,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-01-28 08:58:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2023-01-28 08:58:09,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 410 [2023-01-28 08:58:09,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 1935 transitions, 67044 flow. Second operand has 37 states, 37 states have (on average 109.72972972972973) internal successors, (4060), 37 states have internal predecessors, (4060), 0 states have call successors, (0), 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 08:58:09,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:58:09,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 410 [2023-01-28 08:58:09,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:58:29,005 INFO L130 PetriNetUnfolder]: 17507/32533 cut-off events. [2023-01-28 08:58:29,005 INFO L131 PetriNetUnfolder]: For 1233441/1233441 co-relation queries the response was YES. [2023-01-28 08:58:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333496 conditions, 32533 events. 17507/32533 cut-off events. For 1233441/1233441 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 285267 event pairs, 2477 based on Foata normal form. 132/32665 useless extension candidates. Maximal degree in co-relation 333347. Up to 13374 conditions per place. [2023-01-28 08:58:29,606 INFO L137 encePairwiseOnDemand]: 392/410 looper letters, 773 selfloop transitions, 1291 changer transitions 0/2064 dead transitions. [2023-01-28 08:58:29,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 2064 transitions, 72802 flow [2023-01-28 08:58:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 08:58:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 08:58:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3427 transitions. [2023-01-28 08:58:29,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2786178861788618 [2023-01-28 08:58:29,609 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3427 transitions. [2023-01-28 08:58:29,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3427 transitions. [2023-01-28 08:58:29,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:58:29,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3427 transitions. [2023-01-28 08:58:29,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.23333333333333) internal successors, (3427), 30 states have internal predecessors, (3427), 0 states have call successors, (0), 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 08:58:29,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 410.0) internal successors, (12710), 31 states have internal predecessors, (12710), 0 states have call successors, (0), 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 08:58:29,617 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 410.0) internal successors, (12710), 31 states have internal predecessors, (12710), 0 states have call successors, (0), 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 08:58:29,617 INFO L175 Difference]: Start difference. First operand has 597 places, 1935 transitions, 67044 flow. Second operand 30 states and 3427 transitions. [2023-01-28 08:58:29,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 2064 transitions, 72802 flow [2023-01-28 08:58:47,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 2064 transitions, 72182 flow, removed 32 selfloop flow, removed 11 redundant places. [2023-01-28 08:58:47,561 INFO L231 Difference]: Finished difference. Result has 619 places, 1956 transitions, 70011 flow [2023-01-28 08:58:47,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=66213, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=70011, PETRI_PLACES=619, PETRI_TRANSITIONS=1956} [2023-01-28 08:58:47,563 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 593 predicate places. [2023-01-28 08:58:47,563 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 1956 transitions, 70011 flow [2023-01-28 08:58:47,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 109.72972972972973) internal successors, (4060), 37 states have internal predecessors, (4060), 0 states have call successors, (0), 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 08:58:47,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:58:47,563 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:58:47,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-01-28 08:58:47,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:58:47,771 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:58:47,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:58:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash -183102774, now seen corresponding path program 16 times [2023-01-28 08:58:47,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:58:47,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048873584] [2023-01-28 08:58:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:58:47,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:58:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:58:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:58:48,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:58:48,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048873584] [2023-01-28 08:58:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048873584] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:58:48,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:58:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:58:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138489210] [2023-01-28 08:58:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:58:48,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:58:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:58:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:58:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:58:48,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-28 08:58:48,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 1956 transitions, 70011 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:58:48,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:58:48,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-28 08:58:48,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:59:07,466 INFO L130 PetriNetUnfolder]: 17503/32529 cut-off events. [2023-01-28 08:59:07,467 INFO L131 PetriNetUnfolder]: For 1328060/1328060 co-relation queries the response was YES. [2023-01-28 08:59:07,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344212 conditions, 32529 events. 17503/32529 cut-off events. For 1328060/1328060 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 285175 event pairs, 7691 based on Foata normal form. 4/32533 useless extension candidates. Maximal degree in co-relation 344059. Up to 30629 conditions per place. [2023-01-28 08:59:08,039 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1723 selfloop transitions, 235 changer transitions 8/1966 dead transitions. [2023-01-28 08:59:08,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 1966 transitions, 73922 flow [2023-01-28 08:59:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 08:59:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 08:59:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1537 transitions. [2023-01-28 08:59:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34079822616407984 [2023-01-28 08:59:08,041 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1537 transitions. [2023-01-28 08:59:08,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1537 transitions. [2023-01-28 08:59:08,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:59:08,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1537 transitions. [2023-01-28 08:59:08,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 139.72727272727272) internal successors, (1537), 11 states have internal predecessors, (1537), 0 states have call successors, (0), 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 08:59:08,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:59:08,045 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 08:59:08,045 INFO L175 Difference]: Start difference. First operand has 619 places, 1956 transitions, 70011 flow. Second operand 11 states and 1537 transitions. [2023-01-28 08:59:08,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 1966 transitions, 73922 flow [2023-01-28 08:59:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1966 transitions, 73231 flow, removed 41 selfloop flow, removed 21 redundant places. [2023-01-28 08:59:29,720 INFO L231 Difference]: Finished difference. Result has 608 places, 1948 transitions, 69492 flow [2023-01-28 08:59:29,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=69206, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=69492, PETRI_PLACES=608, PETRI_TRANSITIONS=1948} [2023-01-28 08:59:29,722 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 582 predicate places. [2023-01-28 08:59:29,722 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 1948 transitions, 69492 flow [2023-01-28 08:59:29,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 08:59:29,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:59:29,722 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:59:29,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-01-28 08:59:29,722 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:59:29,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:59:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash 116405824, now seen corresponding path program 17 times [2023-01-28 08:59:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:59:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082901018] [2023-01-28 08:59:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:59:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:59:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:59:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 08:59:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:59:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082901018] [2023-01-28 08:59:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082901018] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:59:30,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:59:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 08:59:30,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146641083] [2023-01-28 08:59:30,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:59:30,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:59:30,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:59:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:59:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:59:30,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 410 [2023-01-28 08:59:30,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 1948 transitions, 69492 flow. Second operand has 12 states, 12 states have (on average 133.0) internal successors, (1596), 12 states have internal predecessors, (1596), 0 states have call successors, (0), 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 08:59:30,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:59:30,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 410 [2023-01-28 08:59:30,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:59:48,383 INFO L130 PetriNetUnfolder]: 17493/32511 cut-off events. [2023-01-28 08:59:48,383 INFO L131 PetriNetUnfolder]: For 1328209/1328209 co-relation queries the response was YES. [2023-01-28 08:59:49,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343245 conditions, 32511 events. 17493/32511 cut-off events. For 1328209/1328209 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 285483 event pairs, 3648 based on Foata normal form. 4/32515 useless extension candidates. Maximal degree in co-relation 343097. Up to 17067 conditions per place. [2023-01-28 08:59:49,170 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1472 selfloop transitions, 483 changer transitions 13/1968 dead transitions. [2023-01-28 08:59:49,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 1968 transitions, 73486 flow [2023-01-28 08:59:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 08:59:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 08:59:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1380 transitions. [2023-01-28 08:59:49,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33658536585365856 [2023-01-28 08:59:49,171 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1380 transitions. [2023-01-28 08:59:49,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1380 transitions. [2023-01-28 08:59:49,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:59:49,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1380 transitions. [2023-01-28 08:59:49,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 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 08:59:49,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:59:49,174 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 08:59:49,174 INFO L175 Difference]: Start difference. First operand has 608 places, 1948 transitions, 69492 flow. Second operand 10 states and 1380 transitions. [2023-01-28 08:59:49,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 1968 transitions, 73486 flow Received shutdown request... [2023-01-28 09:00:07,643 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 09:00:07,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:00:07,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-01-28 09:00:07,646 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 09:00:07,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:00:07,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:00:07,648 INFO L445 BasicCegarLoop]: Path program histogram: [28, 22, 18, 17, 7, 4, 1, 1] [2023-01-28 09:00:07,649 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:00:07,649 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:00:07,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:00:07 BasicIcfg [2023-01-28 09:00:07,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:00:07,651 INFO L158 Benchmark]: Toolchain (without parser) took 794216.58ms. Allocated memory was 346.0MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 307.0MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. [2023-01-28 09:00:07,651 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 212.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:00:07,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.73ms. Allocated memory is still 346.0MB. Free memory was 306.6MB in the beginning and 295.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:00:07,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.96ms. Allocated memory is still 346.0MB. Free memory was 295.1MB in the beginning and 293.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:00:07,651 INFO L158 Benchmark]: Boogie Preprocessor took 19.41ms. Allocated memory is still 346.0MB. Free memory was 293.0MB in the beginning and 291.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:00:07,652 INFO L158 Benchmark]: RCFGBuilder took 392.42ms. Allocated memory is still 346.0MB. Free memory was 291.2MB in the beginning and 272.7MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 09:00:07,652 INFO L158 Benchmark]: TraceAbstraction took 793588.12ms. Allocated memory was 346.0MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 272.1MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. [2023-01-28 09:00:07,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 212.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 187.73ms. Allocated memory is still 346.0MB. Free memory was 306.6MB in the beginning and 295.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.96ms. Allocated memory is still 346.0MB. Free memory was 295.1MB in the beginning and 293.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.41ms. Allocated memory is still 346.0MB. Free memory was 293.0MB in the beginning and 291.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 392.42ms. Allocated memory is still 346.0MB. Free memory was 291.2MB in the beginning and 272.7MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 793588.12ms. Allocated memory was 346.0MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 272.1MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 177 PlacesBefore, 26 PlacesAfterwards, 189 TransitionsBefore, 25 TransitionsAfterwards, 3332 CoEnabledTransitionPairs, 7 FixpointIterations, 92 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 19 ConcurrentYvCompositions, 13 ChoiceCompositions, 211 TotalNumberOfCompositions, 3976 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3441, independent: 3370, independent conditional: 0, independent unconditional: 3370, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1966, independent: 1951, independent conditional: 0, independent unconditional: 1951, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3441, independent: 1419, independent conditional: 0, independent unconditional: 1419, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1966, unknown conditional: 0, unknown unconditional: 1966] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 88]: 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: 87]: 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 5 procedures, 243 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 793.5s, OverallIterations: 98, TraceHistogramMax: 5, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 569.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 19140 SdHoareTripleChecker+Valid, 21.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19140 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 18.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 75 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 730 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41992 IncrementalHoareTripleChecker+Invalid, 42800 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 730 mSolverCounterUnsat, 7 mSDtfsCounter, 41992 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4432 GetRequests, 1729 SyntacticMatches, 7 SemanticMatches, 2696 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 20480 ImplicationChecksByTransitivity, 54.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70011occurred in iteration=96, InterpolantAutomatonStates: 1455, 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: 0.7s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 199.1s InterpolantComputationTime, 4089 NumberOfCodeBlocks, 3880 NumberOfCodeBlocksAsserted, 179 NumberOfCheckSat, 4575 ConstructedInterpolants, 34 QuantifiedInterpolants, 51549 SizeOfPredicates, 615 NumberOfNonLiveVariables, 10540 ConjunctsInSsa, 1167 ConjunctsInUnsatCore, 164 InterpolantComputations, 80 PerfectInterpolantSequences, 4330/4877 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