/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:52:25,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:52:25,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:52:25,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:52:25,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:52:25,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:52:25,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:52:25,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:52:25,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:52:25,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:52:25,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:52:25,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:52:25,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:52:25,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:52:25,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:52:25,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:52:25,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:52:25,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:52:25,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:52:25,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:52:25,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:52:25,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:52:25,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:52:25,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:52:25,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 20:52:25,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:52:25,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:52:25,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:52:25,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:52:25,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:52:25,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:52:25,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:52:25,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:52:25,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:52:25,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:52:25,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:52:25,621 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 [2023-01-27 20:52:25,650 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:52:25,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:52:25,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:52:25,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:52:25,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:52:25,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:52:25,653 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:52:25,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:52:25,653 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:52:25,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:52:25,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:52:25,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:52:25,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:52:25,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:52:25,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:52:25,655 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:52:25,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:52:25,655 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:52:25,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:52:25,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:52:25,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:52:25,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:52:25,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:52:25,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:52:25,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:52:25,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:52:25,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:52:25,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:52:25,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:52:25,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:52:25,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:52:25,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:52:25,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:52:25,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:52:25,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:52:25,903 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:52:25,903 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:52:25,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-01-27 20:52:26,888 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:52:27,123 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:52:27,123 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-01-27 20:52:27,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47858dab/bbe24875a75f44928ddf21269deb167e/FLAG779cec331 [2023-01-27 20:52:27,147 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47858dab/bbe24875a75f44928ddf21269deb167e [2023-01-27 20:52:27,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:52:27,150 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:52:27,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:52:27,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:52:27,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:52:27,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1171e0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27, skipping insertion in model container [2023-01-27 20:52:27,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:52:27,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:52:27,308 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/parallel-lamport.wvr.c[4210,4223] [2023-01-27 20:52:27,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:52:27,325 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:52:27,345 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/parallel-lamport.wvr.c[4210,4223] [2023-01-27 20:52:27,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:52:27,355 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:52:27,355 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:52:27,360 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:52:27,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27 WrapperNode [2023-01-27 20:52:27,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:52:27,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:52:27,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:52:27,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:52:27,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,399 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 243 [2023-01-27 20:52:27,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:52:27,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:52:27,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:52:27,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:52:27,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,420 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:52:27,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:52:27,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:52:27,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:52:27,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (1/1) ... [2023-01-27 20:52:27,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:52:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:52:27,447 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) [2023-01-27 20:52:27,449 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 [2023-01-27 20:52:27,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:52:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:52:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:52:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:52:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:52:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:52:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:52:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:52:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:52:27,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:52:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:52:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:52:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:52:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:52:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:52:27,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:52:27,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:52:27,474 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:52:27,553 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:52:27,554 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:52:27,906 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:52:27,978 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:52:27,978 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-27 20:52:27,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:52:27 BoogieIcfgContainer [2023-01-27 20:52:27,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:52:27,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:52:27,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:52:27,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:52:27,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:52:27" (1/3) ... [2023-01-27 20:52:27,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d09ec3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:52:27, skipping insertion in model container [2023-01-27 20:52:27,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:52:27" (2/3) ... [2023-01-27 20:52:27,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d09ec3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:52:27, skipping insertion in model container [2023-01-27 20:52:27,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:52:27" (3/3) ... [2023-01-27 20:52:27,986 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-01-27 20:52:28,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:52:28,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:52:28,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:52:28,054 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:52:28,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 180 transitions, 384 flow [2023-01-27 20:52:28,146 INFO L130 PetriNetUnfolder]: 7/177 cut-off events. [2023-01-27 20:52:28,147 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:52:28,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 7/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-01-27 20:52:28,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 180 transitions, 384 flow [2023-01-27 20:52:28,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 167 transitions, 352 flow [2023-01-27 20:52:28,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:52:28,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 167 transitions, 352 flow [2023-01-27 20:52:28,167 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 167 transitions, 352 flow [2023-01-27 20:52:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 167 transitions, 352 flow [2023-01-27 20:52:28,223 INFO L130 PetriNetUnfolder]: 7/167 cut-off events. [2023-01-27 20:52:28,223 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:52:28,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 7/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2023-01-27 20:52:28,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2023-01-27 20:52:33,459 INFO L134 LiptonReduction]: Checked pairs total: 7223 [2023-01-27 20:52:33,459 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-01-27 20:52:33,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:52:33,477 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;@4a903648, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:52:33,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:52:33,484 INFO L130 PetriNetUnfolder]: 1/35 cut-off events. [2023-01-27 20:52:33,484 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:52:33,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:52:33,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:52:33,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:52:33,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:52:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1679152980, now seen corresponding path program 1 times [2023-01-27 20:52:33,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:52:33,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840365732] [2023-01-27 20:52:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:52:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:52:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:52:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:52:34,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:52:34,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840365732] [2023-01-27 20:52:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840365732] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:52:34,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:52:34,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:52:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759801617] [2023-01-27 20:52:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:52:34,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:52:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:52:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:52:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:52:34,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 327 [2023-01-27 20:52:34,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:52:34,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 327 [2023-01-27 20:52:34,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:52:34,189 INFO L130 PetriNetUnfolder]: 406/717 cut-off events. [2023-01-27 20:52:34,189 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-01-27 20:52:34,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 717 events. 406/717 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3277 event pairs, 405 based on Foata normal form. 0/690 useless extension candidates. Maximal degree in co-relation 1330. Up to 667 conditions per place. [2023-01-27 20:52:34,199 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-01-27 20:52:34,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 146 flow [2023-01-27 20:52:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:52:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:52:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-01-27 20:52:34,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597349643221203 [2023-01-27 20:52:34,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-01-27 20:52:34,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-01-27 20:52:34,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:52:34,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-01-27 20:52:34,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,230 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 90 flow. Second operand 3 states and 451 transitions. [2023-01-27 20:52:34,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 146 flow [2023-01-27 20:52:34,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:52:34,234 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 90 flow [2023-01-27 20:52:34,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-01-27 20:52:34,238 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-01-27 20:52:34,238 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 90 flow [2023-01-27 20:52:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:52:34,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:52:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:52:34,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:52:34,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:52:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1807884856, now seen corresponding path program 1 times [2023-01-27 20:52:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:52:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209911073] [2023-01-27 20:52:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:52:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:52:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:52:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:52:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:52:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209911073] [2023-01-27 20:52:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209911073] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:52:34,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:52:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:52:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298782712] [2023-01-27 20:52:34,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:52:34,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:52:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:52:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:52:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:52:34,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-27 20:52:34,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:52:34,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-27 20:52:34,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:52:34,866 INFO L130 PetriNetUnfolder]: 1344/2387 cut-off events. [2023-01-27 20:52:34,866 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-27 20:52:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2387 events. 1344/2387 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13533 event pairs, 243 based on Foata normal form. 30/2415 useless extension candidates. Maximal degree in co-relation 4672. Up to 695 conditions per place. [2023-01-27 20:52:34,878 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 102 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2023-01-27 20:52:34,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 514 flow [2023-01-27 20:52:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:52:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:52:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1396 transitions. [2023-01-27 20:52:34,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743459055385661 [2023-01-27 20:52:34,882 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1396 transitions. [2023-01-27 20:52:34,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1396 transitions. [2023-01-27 20:52:34,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:52:34,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1396 transitions. [2023-01-27 20:52:34,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.11111111111111) internal successors, (1396), 9 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,893 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,893 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 90 flow. Second operand 9 states and 1396 transitions. [2023-01-27 20:52:34,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 514 flow [2023-01-27 20:52:34,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 124 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 20:52:34,895 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 182 flow [2023-01-27 20:52:34,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-01-27 20:52:34,896 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-01-27 20:52:34,896 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 182 flow [2023-01-27 20:52:34,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:34,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:52:34,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:52:34,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:52:34,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:52:34,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:52:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2091808474, now seen corresponding path program 2 times [2023-01-27 20:52:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:52:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240458559] [2023-01-27 20:52:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:52:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:52:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:52:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:52:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:52:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240458559] [2023-01-27 20:52:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240458559] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:52:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:52:35,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:52:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595224243] [2023-01-27 20:52:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:52:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:52:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:52:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:52:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:52:35,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 327 [2023-01-27 20:52:35,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:35,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:52:35,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 327 [2023-01-27 20:52:35,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:52:35,180 INFO L130 PetriNetUnfolder]: 1068/1983 cut-off events. [2023-01-27 20:52:35,180 INFO L131 PetriNetUnfolder]: For 375/375 co-relation queries the response was YES. [2023-01-27 20:52:35,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1983 events. 1068/1983 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11762 event pairs, 893 based on Foata normal form. 20/1959 useless extension candidates. Maximal degree in co-relation 4362. Up to 1600 conditions per place. [2023-01-27 20:52:35,191 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-01-27 20:52:35,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 301 flow [2023-01-27 20:52:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:52:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:52:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-01-27 20:52:35,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-01-27 20:52:35,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-01-27 20:52:35,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-01-27 20:52:35,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:52:35,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-01-27 20:52:35,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:35,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:35,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:35,198 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 182 flow. Second operand 3 states and 495 transitions. [2023-01-27 20:52:35,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 301 flow [2023-01-27 20:52:35,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 20:52:35,207 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 190 flow [2023-01-27 20:52:35,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-01-27 20:52:35,208 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2023-01-27 20:52:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 190 flow [2023-01-27 20:52:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:35,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:52:35,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:52:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:52:35,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:52:35,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:52:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 124098926, now seen corresponding path program 3 times [2023-01-27 20:52:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:52:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566182952] [2023-01-27 20:52:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:52:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:52:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:52:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:52:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:52:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566182952] [2023-01-27 20:52:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566182952] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:52:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436598965] [2023-01-27 20:52:35,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:52:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:52:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:52:35,933 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) [2023-01-27 20:52:35,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:52:36,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:52:36,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:52:36,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:52:36,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:52:36,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:36,386 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:52:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:52:36,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:52:36,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436598965] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:52:36,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:52:36,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-01-27 20:52:36,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279128529] [2023-01-27 20:52:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:52:36,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:52:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:52:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:52:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:52:36,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:52:36,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:36,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:52:36,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:52:36,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:52:41,623 INFO L130 PetriNetUnfolder]: 1534/2633 cut-off events. [2023-01-27 20:52:41,623 INFO L131 PetriNetUnfolder]: For 639/639 co-relation queries the response was YES. [2023-01-27 20:52:41,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 2633 events. 1534/2633 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14935 event pairs, 307 based on Foata normal form. 2/2573 useless extension candidates. Maximal degree in co-relation 6034. Up to 1421 conditions per place. [2023-01-27 20:52:41,636 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 88 selfloop transitions, 11 changer transitions 23/137 dead transitions. [2023-01-27 20:52:41,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 137 transitions, 694 flow [2023-01-27 20:52:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:52:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:52:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1287 transitions. [2023-01-27 20:52:41,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43730886850152906 [2023-01-27 20:52:41,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1287 transitions. [2023-01-27 20:52:41,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1287 transitions. [2023-01-27 20:52:41,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:52:41,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1287 transitions. [2023-01-27 20:52:41,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.0) internal successors, (1287), 9 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:41,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:41,650 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:41,650 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 190 flow. Second operand 9 states and 1287 transitions. [2023-01-27 20:52:41,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 137 transitions, 694 flow [2023-01-27 20:52:41,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 137 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:52:41,657 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 251 flow [2023-01-27 20:52:41,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-01-27 20:52:41,658 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-01-27 20:52:41,658 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 251 flow [2023-01-27 20:52:41,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:41,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:52:41,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:52:41,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:52:41,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:52:41,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:52:41,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:52:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1110793696, now seen corresponding path program 4 times [2023-01-27 20:52:41,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:52:41,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163791773] [2023-01-27 20:52:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:52:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:52:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:52:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:52:42,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:52:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163791773] [2023-01-27 20:52:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163791773] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:52:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67319422] [2023-01-27 20:52:42,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:52:42,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:52:42,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:52:42,755 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) [2023-01-27 20:52:42,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:52:42,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:52:42,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:52:42,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:52:42,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:52:43,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:43,052 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:52:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:52:43,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:52:43,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67319422] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:52:43,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:52:43,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2023-01-27 20:52:43,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174353320] [2023-01-27 20:52:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:52:43,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:52:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:52:43,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:52:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:52:43,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:52:43,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:43,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:52:43,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:52:43,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:52:49,151 INFO L130 PetriNetUnfolder]: 2114/3781 cut-off events. [2023-01-27 20:52:49,152 INFO L131 PetriNetUnfolder]: For 1863/1863 co-relation queries the response was YES. [2023-01-27 20:52:49,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9967 conditions, 3781 events. 2114/3781 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 24184 event pairs, 457 based on Foata normal form. 2/3712 useless extension candidates. Maximal degree in co-relation 9939. Up to 1577 conditions per place. [2023-01-27 20:52:49,175 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 124 selfloop transitions, 14 changer transitions 27/180 dead transitions. [2023-01-27 20:52:49,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 180 transitions, 1023 flow [2023-01-27 20:52:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:52:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:52:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1305 transitions. [2023-01-27 20:52:49,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434250764525994 [2023-01-27 20:52:49,179 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1305 transitions. [2023-01-27 20:52:49,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1305 transitions. [2023-01-27 20:52:49,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:52:49,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1305 transitions. [2023-01-27 20:52:49,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.0) internal successors, (1305), 9 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:49,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:49,187 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:49,187 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 251 flow. Second operand 9 states and 1305 transitions. [2023-01-27 20:52:49,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 180 transitions, 1023 flow [2023-01-27 20:52:49,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 180 transitions, 1017 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 20:52:49,197 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 366 flow [2023-01-27 20:52:49,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-01-27 20:52:49,198 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2023-01-27 20:52:49,198 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 366 flow [2023-01-27 20:52:49,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:49,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:52:49,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:52:49,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:52:49,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:52:49,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:52:49,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:52:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945012, now seen corresponding path program 5 times [2023-01-27 20:52:49,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:52:49,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789161116] [2023-01-27 20:52:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:52:49,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:52:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:52:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:52:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:52:50,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789161116] [2023-01-27 20:52:50,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789161116] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:52:50,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132496087] [2023-01-27 20:52:50,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:52:50,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:52:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:52:50,165 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) [2023-01-27 20:52:50,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:52:50,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:52:50,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:52:50,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-27 20:52:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:52:50,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 20:52:50,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 20:52:50,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 20:52:50,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 20:52:50,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:50,627 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-01-27 20:52:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:52:50,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:52:51,298 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~f~0.offset (* c_~j~0 4))) (.cse3 (+ c_~f~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (<= c_~n~0 .cse0) (< (select .cse1 (+ c_~f~0.offset (* (select .cse1 .cse2) 4))) 1) (< .cse0 0))))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~f~0.base))) (let ((.cse5 (select .cse4 .cse3))) (or (< c_~n~0 (+ (select .cse4 (+ c_~f~0.offset (* (select .cse4 .cse2) 4))) 2)) (<= c_~n~0 .cse5) (< .cse5 0))))))) is different from false [2023-01-27 20:52:51,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:51,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2023-01-27 20:52:51,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:51,643 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 1024 treesize of output 980 [2023-01-27 20:52:51,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:51,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 548 treesize of output 432 [2023-01-27 20:52:51,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:51,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 178 [2023-01-27 20:52:51,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:52:51,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 175 [2023-01-27 20:52:51,784 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-27 20:52:52,583 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 20:52:52,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 1 [2023-01-27 20:52:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:52:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132496087] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:52:52,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:52:52,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-01-27 20:52:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031470197] [2023-01-27 20:52:52,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:52:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 20:52:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:52:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 20:52:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=690, Unknown=5, NotChecked=56, Total=930 [2023-01-27 20:52:52,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 327 [2023-01-27 20:52:52,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 366 flow. Second operand has 31 states, 31 states have (on average 111.54838709677419) internal successors, (3458), 31 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:52:52,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:52:52,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 327 [2023-01-27 20:52:52,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:01,641 WARN L222 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 65 DAG size of output: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:53:02,807 INFO L130 PetriNetUnfolder]: 4565/8220 cut-off events. [2023-01-27 20:53:02,807 INFO L131 PetriNetUnfolder]: For 8576/8577 co-relation queries the response was YES. [2023-01-27 20:53:02,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24123 conditions, 8220 events. 4565/8220 cut-off events. For 8576/8577 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 61233 event pairs, 1160 based on Foata normal form. 20/8097 useless extension candidates. Maximal degree in co-relation 24060. Up to 3163 conditions per place. [2023-01-27 20:53:02,854 INFO L137 encePairwiseOnDemand]: 317/327 looper letters, 58 selfloop transitions, 9 changer transitions 195/277 dead transitions. [2023-01-27 20:53:02,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 277 transitions, 1795 flow [2023-01-27 20:53:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 20:53:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 20:53:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1938 transitions. [2023-01-27 20:53:02,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704128440366973 [2023-01-27 20:53:02,859 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1938 transitions. [2023-01-27 20:53:02,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1938 transitions. [2023-01-27 20:53:02,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:02,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1938 transitions. [2023-01-27 20:53:02,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.125) internal successors, (1938), 16 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) [2023-01-27 20:53:02,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 327.0) internal successors, (5559), 17 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:02,873 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 327.0) internal successors, (5559), 17 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:02,873 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 366 flow. Second operand 16 states and 1938 transitions. [2023-01-27 20:53:02,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 277 transitions, 1795 flow [2023-01-27 20:53:02,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 277 transitions, 1751 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-01-27 20:53:02,919 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 479 flow [2023-01-27 20:53:02,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2023-01-27 20:53:02,920 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2023-01-27 20:53:02,921 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 479 flow [2023-01-27 20:53:02,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 111.54838709677419) internal successors, (3458), 31 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:02,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:02,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:02,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:03,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:03,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:03,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1199619666, now seen corresponding path program 6 times [2023-01-27 20:53:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461596568] [2023-01-27 20:53:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:03,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:03,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:03,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461596568] [2023-01-27 20:53:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461596568] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:53:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977397435] [2023-01-27 20:53:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:03,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:53:03,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:03,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 72 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:03,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:03,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:03,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:04,083 INFO L130 PetriNetUnfolder]: 2554/4658 cut-off events. [2023-01-27 20:53:04,083 INFO L131 PetriNetUnfolder]: For 17256/17256 co-relation queries the response was YES. [2023-01-27 20:53:04,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19377 conditions, 4658 events. 2554/4658 cut-off events. For 17256/17256 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 31497 event pairs, 792 based on Foata normal form. 2/4584 useless extension candidates. Maximal degree in co-relation 19330. Up to 2169 conditions per place. [2023-01-27 20:53:04,117 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 120 selfloop transitions, 17 changer transitions 24/176 dead transitions. [2023-01-27 20:53:04,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 176 transitions, 1387 flow [2023-01-27 20:53:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1301 transitions. [2023-01-27 20:53:04,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420659191301393 [2023-01-27 20:53:04,121 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1301 transitions. [2023-01-27 20:53:04,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1301 transitions. [2023-01-27 20:53:04,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:04,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1301 transitions. [2023-01-27 20:53:04,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.55555555555554) internal successors, (1301), 9 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:04,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:04,128 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:04,128 INFO L175 Difference]: Start difference. First operand has 98 places, 72 transitions, 479 flow. Second operand 9 states and 1301 transitions. [2023-01-27 20:53:04,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 176 transitions, 1387 flow [2023-01-27 20:53:04,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 1284 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-01-27 20:53:04,174 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 592 flow [2023-01-27 20:53:04,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2023-01-27 20:53:04,175 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-01-27 20:53:04,175 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 592 flow [2023-01-27 20:53:04,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:04,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:04,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:04,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:53:04,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:04,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1405549144, now seen corresponding path program 7 times [2023-01-27 20:53:04,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:04,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711433414] [2023-01-27 20:53:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:04,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711433414] [2023-01-27 20:53:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711433414] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742569065] [2023-01-27 20:53:04,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:53:04,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:04,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:04,917 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) [2023-01-27 20:53:04,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:53:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:05,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:53:05,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:05,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:05,189 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:05,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:05,313 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-01-27 20:53:05,313 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-01-27 20:53:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:05,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742569065] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:05,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:53:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 19 [2023-01-27 20:53:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650117679] [2023-01-27 20:53:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:05,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:05,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:53:05,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:05,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 592 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:05,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:05,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:08,019 INFO L130 PetriNetUnfolder]: 2531/4617 cut-off events. [2023-01-27 20:53:08,020 INFO L131 PetriNetUnfolder]: For 16410/16410 co-relation queries the response was YES. [2023-01-27 20:53:08,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19266 conditions, 4617 events. 2531/4617 cut-off events. For 16410/16410 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 31302 event pairs, 891 based on Foata normal form. 2/4547 useless extension candidates. Maximal degree in co-relation 19218. Up to 3072 conditions per place. [2023-01-27 20:53:08,050 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 97 selfloop transitions, 22 changer transitions 27/161 dead transitions. [2023-01-27 20:53:08,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 161 transitions, 1270 flow [2023-01-27 20:53:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1289 transitions. [2023-01-27 20:53:08,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379884471627591 [2023-01-27 20:53:08,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1289 transitions. [2023-01-27 20:53:08,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1289 transitions. [2023-01-27 20:53:08,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:08,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1289 transitions. [2023-01-27 20:53:08,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:08,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:08,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:08,061 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 592 flow. Second operand 9 states and 1289 transitions. [2023-01-27 20:53:08,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 161 transitions, 1270 flow [2023-01-27 20:53:08,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 161 transitions, 1221 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-01-27 20:53:08,114 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 664 flow [2023-01-27 20:53:08,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=664, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2023-01-27 20:53:08,115 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2023-01-27 20:53:08,115 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 664 flow [2023-01-27 20:53:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:08,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:08,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:08,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:08,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:08,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1315014560, now seen corresponding path program 8 times [2023-01-27 20:53:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796203026] [2023-01-27 20:53:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:08,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:08,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796203026] [2023-01-27 20:53:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796203026] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:53:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732643928] [2023-01-27 20:53:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:08,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:53:08,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-27 20:53:08,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 664 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:08,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:08,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-27 20:53:08,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:09,550 INFO L130 PetriNetUnfolder]: 3793/7236 cut-off events. [2023-01-27 20:53:09,551 INFO L131 PetriNetUnfolder]: For 28790/29029 co-relation queries the response was YES. [2023-01-27 20:53:09,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29556 conditions, 7236 events. 3793/7236 cut-off events. For 28790/29029 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 53494 event pairs, 1425 based on Foata normal form. 42/7236 useless extension candidates. Maximal degree in co-relation 29508. Up to 4461 conditions per place. [2023-01-27 20:53:09,594 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 203 selfloop transitions, 18 changer transitions 10/241 dead transitions. [2023-01-27 20:53:09,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 241 transitions, 2419 flow [2023-01-27 20:53:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:53:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:53:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1689 transitions. [2023-01-27 20:53:09,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469557964970809 [2023-01-27 20:53:09,598 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1689 transitions. [2023-01-27 20:53:09,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1689 transitions. [2023-01-27 20:53:09,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:09,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1689 transitions. [2023-01-27 20:53:09,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.54545454545453) internal successors, (1689), 11 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) [2023-01-27 20:53:09,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:09,606 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:09,606 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 664 flow. Second operand 11 states and 1689 transitions. [2023-01-27 20:53:09,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 241 transitions, 2419 flow [2023-01-27 20:53:09,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 2272 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-01-27 20:53:09,802 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 766 flow [2023-01-27 20:53:09,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=766, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2023-01-27 20:53:09,803 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-01-27 20:53:09,804 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 766 flow [2023-01-27 20:53:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:09,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:09,804 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:53:09,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:09,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 174753486, now seen corresponding path program 9 times [2023-01-27 20:53:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373427132] [2023-01-27 20:53:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373427132] [2023-01-27 20:53:10,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373427132] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206218303] [2023-01-27 20:53:10,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:53:10,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:10,498 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) [2023-01-27 20:53:10,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:53:10,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:53:10,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:10,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 20:53:10,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:10,766 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:10,766 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:10,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:10,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206218303] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:10,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:10,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-01-27 20:53:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074894248] [2023-01-27 20:53:10,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:10,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:53:10,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:53:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:53:10,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:10,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 766 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:10,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:10,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:10,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:11,896 INFO L130 PetriNetUnfolder]: 4687/8618 cut-off events. [2023-01-27 20:53:11,896 INFO L131 PetriNetUnfolder]: For 35084/35085 co-relation queries the response was YES. [2023-01-27 20:53:11,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37088 conditions, 8618 events. 4687/8618 cut-off events. For 35084/35085 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 65816 event pairs, 897 based on Foata normal form. 5/8538 useless extension candidates. Maximal degree in co-relation 37036. Up to 4964 conditions per place. [2023-01-27 20:53:11,943 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 156 selfloop transitions, 20 changer transitions 32/232 dead transitions. [2023-01-27 20:53:11,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 232 transitions, 1992 flow [2023-01-27 20:53:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1306 transitions. [2023-01-27 20:53:11,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437648657832144 [2023-01-27 20:53:11,947 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1306 transitions. [2023-01-27 20:53:11,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1306 transitions. [2023-01-27 20:53:11,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:11,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1306 transitions. [2023-01-27 20:53:11,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.11111111111111) internal successors, (1306), 9 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:11,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:11,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:11,954 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 766 flow. Second operand 9 states and 1306 transitions. [2023-01-27 20:53:11,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 232 transitions, 1992 flow [2023-01-27 20:53:12,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 232 transitions, 1988 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 20:53:12,090 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 931 flow [2023-01-27 20:53:12,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=931, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2023-01-27 20:53:12,091 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 77 predicate places. [2023-01-27 20:53:12,091 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 931 flow [2023-01-27 20:53:12,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:12,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:12,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:12,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:12,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 20:53:12,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:12,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:12,298 INFO L85 PathProgramCache]: Analyzing trace with hash 951031568, now seen corresponding path program 10 times [2023-01-27 20:53:12,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:12,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81503935] [2023-01-27 20:53:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:12,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81503935] [2023-01-27 20:53:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81503935] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521995127] [2023-01-27 20:53:13,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:53:13,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:13,149 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) [2023-01-27 20:53:13,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:53:13,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:53:13,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:13,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:53:13,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:13,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:13,359 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:13,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521995127] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-27 20:53:13,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492619526] [2023-01-27 20:53:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:13,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:13,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:13,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:13,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:53:13,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:13,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 931 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:13,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:13,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:13,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:14,548 INFO L130 PetriNetUnfolder]: 4870/8984 cut-off events. [2023-01-27 20:53:14,549 INFO L131 PetriNetUnfolder]: For 45689/45690 co-relation queries the response was YES. [2023-01-27 20:53:14,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41457 conditions, 8984 events. 4870/8984 cut-off events. For 45689/45690 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 69241 event pairs, 1010 based on Foata normal form. 5/8904 useless extension candidates. Maximal degree in co-relation 41400. Up to 5516 conditions per place. [2023-01-27 20:53:14,600 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 181 selfloop transitions, 23 changer transitions 21/249 dead transitions. [2023-01-27 20:53:14,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 249 transitions, 2230 flow [2023-01-27 20:53:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:53:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:53:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1450 transitions. [2023-01-27 20:53:14,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434250764525994 [2023-01-27 20:53:14,604 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1450 transitions. [2023-01-27 20:53:14,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1450 transitions. [2023-01-27 20:53:14,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:14,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1450 transitions. [2023-01-27 20:53:14,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.0) internal successors, (1450), 10 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:14,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:14,611 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:14,611 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 931 flow. Second operand 10 states and 1450 transitions. [2023-01-27 20:53:14,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 249 transitions, 2230 flow [2023-01-27 20:53:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 249 transitions, 2155 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:14,824 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 972 flow [2023-01-27 20:53:14,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=972, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2023-01-27 20:53:14,824 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2023-01-27 20:53:14,824 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 972 flow [2023-01-27 20:53:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:14,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:14,825 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:14,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 20:53:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:15,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:15,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 714877538, now seen corresponding path program 11 times [2023-01-27 20:53:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697340264] [2023-01-27 20:53:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697340264] [2023-01-27 20:53:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697340264] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359951216] [2023-01-27 20:53:15,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:53:15,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:15,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:15,961 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) [2023-01-27 20:53:15,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:53:16,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:53:16,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:16,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 20:53:16,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:16,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:16,189 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:16,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:16,298 INFO L321 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-01-27 20:53:16,298 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-01-27 20:53:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:16,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359951216] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:16,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:53:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 19 [2023-01-27 20:53:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731575576] [2023-01-27 20:53:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:16,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:16,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:53:16,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:16,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 972 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:16,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:16,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:17,421 INFO L130 PetriNetUnfolder]: 4760/8764 cut-off events. [2023-01-27 20:53:17,422 INFO L131 PetriNetUnfolder]: For 42042/42044 co-relation queries the response was YES. [2023-01-27 20:53:17,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40819 conditions, 8764 events. 4760/8764 cut-off events. For 42042/42044 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 66697 event pairs, 1187 based on Foata normal form. 5/8685 useless extension candidates. Maximal degree in co-relation 40761. Up to 5511 conditions per place. [2023-01-27 20:53:17,472 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 151 selfloop transitions, 22 changer transitions 29/226 dead transitions. [2023-01-27 20:53:17,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 226 transitions, 2042 flow [2023-01-27 20:53:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:53:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:53:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1172 transitions. [2023-01-27 20:53:17,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44801223241590216 [2023-01-27 20:53:17,475 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1172 transitions. [2023-01-27 20:53:17,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1172 transitions. [2023-01-27 20:53:17,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:17,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1172 transitions. [2023-01-27 20:53:17,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:17,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:17,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:17,481 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 972 flow. Second operand 8 states and 1172 transitions. [2023-01-27 20:53:17,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 226 transitions, 2042 flow [2023-01-27 20:53:17,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 226 transitions, 1979 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:17,691 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 949 flow [2023-01-27 20:53:17,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2023-01-27 20:53:17,691 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2023-01-27 20:53:17,692 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 949 flow [2023-01-27 20:53:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:17,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:17,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:17,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 20:53:17,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:17,897 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:17,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash -912887976, now seen corresponding path program 12 times [2023-01-27 20:53:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391858157] [2023-01-27 20:53:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:19,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:19,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391858157] [2023-01-27 20:53:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391858157] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762311766] [2023-01-27 20:53:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:53:19,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:19,786 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) [2023-01-27 20:53:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:53:19,889 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 20:53:19,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:19,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:53:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:20,040 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 18 treesize of output 20 [2023-01-27 20:53:20,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:20,143 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:20,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762311766] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 22 [2023-01-27 20:53:20,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999095392] [2023-01-27 20:53:20,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:20,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-01-27 20:53:20,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:20,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:20,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:20,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:20,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:21,340 INFO L130 PetriNetUnfolder]: 5023/9324 cut-off events. [2023-01-27 20:53:21,340 INFO L131 PetriNetUnfolder]: For 44834/44836 co-relation queries the response was YES. [2023-01-27 20:53:21,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43252 conditions, 9324 events. 5023/9324 cut-off events. For 44834/44836 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 72735 event pairs, 1154 based on Foata normal form. 5/9240 useless extension candidates. Maximal degree in co-relation 43194. Up to 4602 conditions per place. [2023-01-27 20:53:21,397 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 154 selfloop transitions, 25 changer transitions 34/237 dead transitions. [2023-01-27 20:53:21,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 237 transitions, 2179 flow [2023-01-27 20:53:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:53:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:53:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1368 transitions. [2023-01-27 20:53:21,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41834862385321103 [2023-01-27 20:53:21,399 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1368 transitions. [2023-01-27 20:53:21,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1368 transitions. [2023-01-27 20:53:21,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:21,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1368 transitions. [2023-01-27 20:53:21,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.8) internal successors, (1368), 10 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:21,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:21,405 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:21,405 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 949 flow. Second operand 10 states and 1368 transitions. [2023-01-27 20:53:21,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 237 transitions, 2179 flow [2023-01-27 20:53:21,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 237 transitions, 2122 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-27 20:53:21,595 INFO L231 Difference]: Finished difference. Result has 131 places, 114 transitions, 1040 flow [2023-01-27 20:53:21,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1040, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2023-01-27 20:53:21,597 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2023-01-27 20:53:21,597 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 1040 flow [2023-01-27 20:53:21,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:21,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:21,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:21,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:21,803 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,SelfDestructingSolverStorable12 [2023-01-27 20:53:21,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:21,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1805207680, now seen corresponding path program 13 times [2023-01-27 20:53:21,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:21,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450526240] [2023-01-27 20:53:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:21,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:22,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450526240] [2023-01-27 20:53:22,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450526240] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193868745] [2023-01-27 20:53:22,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:53:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:22,465 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) [2023-01-27 20:53:22,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 20:53:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:22,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-27 20:53:22,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:22,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:22,723 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 18 treesize of output 20 [2023-01-27 20:53:22,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:22,790 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:22,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:22,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:22,939 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-27 20:53:22,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:22,953 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-01-27 20:53:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:23,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193868745] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:23,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:53:23,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 9] total 26 [2023-01-27 20:53:23,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307124688] [2023-01-27 20:53:23,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:23,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:23,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:23,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=668, Unknown=4, NotChecked=0, Total=756 [2023-01-27 20:53:23,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:23,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 1040 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:23,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:23,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:23,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:32,627 INFO L130 PetriNetUnfolder]: 5398/10013 cut-off events. [2023-01-27 20:53:32,627 INFO L131 PetriNetUnfolder]: For 54700/54702 co-relation queries the response was YES. [2023-01-27 20:53:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47371 conditions, 10013 events. 5398/10013 cut-off events. For 54700/54702 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 78556 event pairs, 1215 based on Foata normal form. 5/9924 useless extension candidates. Maximal degree in co-relation 47309. Up to 5804 conditions per place. [2023-01-27 20:53:32,679 INFO L137 encePairwiseOnDemand]: 310/327 looper letters, 179 selfloop transitions, 50 changer transitions 22/275 dead transitions. [2023-01-27 20:53:32,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 275 transitions, 2582 flow [2023-01-27 20:53:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:53:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:53:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2023-01-27 20:53:32,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41768603465851173 [2023-01-27 20:53:32,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2023-01-27 20:53:32,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2023-01-27 20:53:32,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:32,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2023-01-27 20:53:32,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.58333333333334) internal successors, (1639), 12 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:32,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 327.0) internal successors, (4251), 13 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:32,689 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 327.0) internal successors, (4251), 13 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:32,689 INFO L175 Difference]: Start difference. First operand has 131 places, 114 transitions, 1040 flow. Second operand 12 states and 1639 transitions. [2023-01-27 20:53:32,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 275 transitions, 2582 flow [2023-01-27 20:53:32,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 275 transitions, 2500 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:32,999 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1407 flow [2023-01-27 20:53:32,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1407, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2023-01-27 20:53:32,999 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2023-01-27 20:53:33,000 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1407 flow [2023-01-27 20:53:33,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:33,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:33,000 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:33,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:33,205 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,SelfDestructingSolverStorable13 [2023-01-27 20:53:33,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:33,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1445194166, now seen corresponding path program 14 times [2023-01-27 20:53:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994694814] [2023-01-27 20:53:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994694814] [2023-01-27 20:53:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994694814] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419878736] [2023-01-27 20:53:34,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:53:34,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:34,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:34,117 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) [2023-01-27 20:53:34,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 20:53:34,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:53:34,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:34,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:53:34,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:34,440 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 18 treesize of output 20 [2023-01-27 20:53:34,534 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:34,534 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:34,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:34,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419878736] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:34,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-01-27 20:53:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330749866] [2023-01-27 20:53:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:34,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-01-27 20:53:34,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:34,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1407 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:34,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:34,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:34,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:36,025 INFO L130 PetriNetUnfolder]: 5373/9997 cut-off events. [2023-01-27 20:53:36,025 INFO L131 PetriNetUnfolder]: For 62338/62404 co-relation queries the response was YES. [2023-01-27 20:53:36,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52641 conditions, 9997 events. 5373/9997 cut-off events. For 62338/62404 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78727 event pairs, 1186 based on Foata normal form. 5/9908 useless extension candidates. Maximal degree in co-relation 52577. Up to 5532 conditions per place. [2023-01-27 20:53:36,088 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 205 selfloop transitions, 31 changer transitions 22/282 dead transitions. [2023-01-27 20:53:36,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 282 transitions, 3000 flow [2023-01-27 20:53:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:53:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:53:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1505 transitions. [2023-01-27 20:53:36,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184042257436753 [2023-01-27 20:53:36,091 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1505 transitions. [2023-01-27 20:53:36,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1505 transitions. [2023-01-27 20:53:36,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:36,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1505 transitions. [2023-01-27 20:53:36,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.8181818181818) internal successors, (1505), 11 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:36,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:36,095 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:36,095 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1407 flow. Second operand 11 states and 1505 transitions. [2023-01-27 20:53:36,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 282 transitions, 3000 flow [2023-01-27 20:53:36,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 282 transitions, 2848 flow, removed 47 selfloop flow, removed 8 redundant places. [2023-01-27 20:53:36,442 INFO L231 Difference]: Finished difference. Result has 140 places, 141 transitions, 1371 flow [2023-01-27 20:53:36,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1371, PETRI_PLACES=140, PETRI_TRANSITIONS=141} [2023-01-27 20:53:36,442 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2023-01-27 20:53:36,442 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 141 transitions, 1371 flow [2023-01-27 20:53:36,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:36,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:36,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:36,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:36,648 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,SelfDestructingSolverStorable14 [2023-01-27 20:53:36,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:36,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2092920002, now seen corresponding path program 15 times [2023-01-27 20:53:36,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:36,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158557776] [2023-01-27 20:53:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:38,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158557776] [2023-01-27 20:53:38,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158557776] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348826039] [2023-01-27 20:53:38,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:53:38,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:38,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:38,444 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) [2023-01-27 20:53:38,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 20:53:38,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:53:38,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:38,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 20:53:38,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:38,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:38,715 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 18 treesize of output 20 [2023-01-27 20:53:38,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:38,796 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:38,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348826039] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:38,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:38,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2023-01-27 20:53:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790101334] [2023-01-27 20:53:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:38,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:38,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:53:38,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:38,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 141 transitions, 1371 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:38,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:38,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:38,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:40,015 INFO L130 PetriNetUnfolder]: 5266/9770 cut-off events. [2023-01-27 20:53:40,015 INFO L131 PetriNetUnfolder]: For 58043/58109 co-relation queries the response was YES. [2023-01-27 20:53:40,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50722 conditions, 9770 events. 5266/9770 cut-off events. For 58043/58109 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 76427 event pairs, 1236 based on Foata normal form. 9/9685 useless extension candidates. Maximal degree in co-relation 50659. Up to 5532 conditions per place. [2023-01-27 20:53:40,063 INFO L137 encePairwiseOnDemand]: 318/327 looper letters, 135 selfloop transitions, 22 changer transitions 78/259 dead transitions. [2023-01-27 20:53:40,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 259 transitions, 2696 flow [2023-01-27 20:53:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1241 transitions. [2023-01-27 20:53:40,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216785592932382 [2023-01-27 20:53:40,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1241 transitions. [2023-01-27 20:53:40,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1241 transitions. [2023-01-27 20:53:40,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:40,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1241 transitions. [2023-01-27 20:53:40,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.88888888888889) internal successors, (1241), 9 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:40,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:40,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:40,070 INFO L175 Difference]: Start difference. First operand has 140 places, 141 transitions, 1371 flow. Second operand 9 states and 1241 transitions. [2023-01-27 20:53:40,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 259 transitions, 2696 flow [2023-01-27 20:53:40,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 259 transitions, 2653 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-27 20:53:40,300 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1186 flow [2023-01-27 20:53:40,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1186, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2023-01-27 20:53:40,300 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 98 predicate places. [2023-01-27 20:53:40,300 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1186 flow [2023-01-27 20:53:40,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:40,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:40,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:40,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:40,506 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,SelfDestructingSolverStorable15 [2023-01-27 20:53:40,507 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:40,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash 799744940, now seen corresponding path program 16 times [2023-01-27 20:53:40,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:40,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183046933] [2023-01-27 20:53:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:40,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183046933] [2023-01-27 20:53:40,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183046933] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:40,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:53:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139765122] [2023-01-27 20:53:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:40,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:53:40,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-27 20:53:40,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1186 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:40,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:40,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-27 20:53:40,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:41,702 INFO L130 PetriNetUnfolder]: 4849/9408 cut-off events. [2023-01-27 20:53:41,703 INFO L131 PetriNetUnfolder]: For 65966/66096 co-relation queries the response was YES. [2023-01-27 20:53:41,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47941 conditions, 9408 events. 4849/9408 cut-off events. For 65966/66096 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 74898 event pairs, 2083 based on Foata normal form. 49/9431 useless extension candidates. Maximal degree in co-relation 47878. Up to 6314 conditions per place. [2023-01-27 20:53:41,758 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 230 selfloop transitions, 18 changer transitions 41/299 dead transitions. [2023-01-27 20:53:41,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 299 transitions, 3651 flow [2023-01-27 20:53:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:53:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:53:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1684 transitions. [2023-01-27 20:53:41,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46816791770920213 [2023-01-27 20:53:41,856 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1684 transitions. [2023-01-27 20:53:41,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1684 transitions. [2023-01-27 20:53:41,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:41,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1684 transitions. [2023-01-27 20:53:41,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.0909090909091) internal successors, (1684), 11 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,862 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 327.0) internal successors, (3924), 12 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:41,862 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1186 flow. Second operand 11 states and 1684 transitions. [2023-01-27 20:53:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 299 transitions, 3651 flow [2023-01-27 20:53:42,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 299 transitions, 3394 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-01-27 20:53:42,060 INFO L231 Difference]: Finished difference. Result has 138 places, 120 transitions, 1147 flow [2023-01-27 20:53:42,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1147, PETRI_PLACES=138, PETRI_TRANSITIONS=120} [2023-01-27 20:53:42,060 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2023-01-27 20:53:42,060 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 120 transitions, 1147 flow [2023-01-27 20:53:42,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:42,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:42,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:53:42,061 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:42,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1884868250, now seen corresponding path program 17 times [2023-01-27 20:53:42,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:42,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878329732] [2023-01-27 20:53:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:42,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878329732] [2023-01-27 20:53:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878329732] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:42,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:53:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046158567] [2023-01-27 20:53:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:42,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:42,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:53:42,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-27 20:53:42,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 120 transitions, 1147 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:42,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:42,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-27 20:53:42,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:42,935 INFO L130 PetriNetUnfolder]: 3108/6136 cut-off events. [2023-01-27 20:53:42,935 INFO L131 PetriNetUnfolder]: For 32257/32349 co-relation queries the response was YES. [2023-01-27 20:53:42,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29245 conditions, 6136 events. 3108/6136 cut-off events. For 32257/32349 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 45988 event pairs, 1534 based on Foata normal form. 41/6158 useless extension candidates. Maximal degree in co-relation 29180. Up to 5410 conditions per place. [2023-01-27 20:53:42,970 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 105 selfloop transitions, 7 changer transitions 49/171 dead transitions. [2023-01-27 20:53:42,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 171 transitions, 1750 flow [2023-01-27 20:53:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1363 transitions. [2023-01-27 20:53:42,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46313285762827044 [2023-01-27 20:53:42,972 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1363 transitions. [2023-01-27 20:53:42,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1363 transitions. [2023-01-27 20:53:42,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:42,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1363 transitions. [2023-01-27 20:53:42,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.44444444444446) internal successors, (1363), 9 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:42,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:42,977 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:42,977 INFO L175 Difference]: Start difference. First operand has 138 places, 120 transitions, 1147 flow. Second operand 9 states and 1363 transitions. [2023-01-27 20:53:42,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 171 transitions, 1750 flow [2023-01-27 20:53:43,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 171 transitions, 1709 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-01-27 20:53:43,103 INFO L231 Difference]: Finished difference. Result has 136 places, 109 transitions, 1000 flow [2023-01-27 20:53:43,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1000, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2023-01-27 20:53:43,104 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2023-01-27 20:53:43,104 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 1000 flow [2023-01-27 20:53:43,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:43,104 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:43,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 20:53:43,105 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:43,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1991265282, now seen corresponding path program 18 times [2023-01-27 20:53:43,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:43,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064609189] [2023-01-27 20:53:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:43,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:43,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064609189] [2023-01-27 20:53:43,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064609189] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:43,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:43,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:53:43,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242892411] [2023-01-27 20:53:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:43,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:53:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:53:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:53:43,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 327 [2023-01-27 20:53:43,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 1000 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:43,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 327 [2023-01-27 20:53:43,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:43,730 INFO L130 PetriNetUnfolder]: 2771/5568 cut-off events. [2023-01-27 20:53:43,730 INFO L131 PetriNetUnfolder]: For 27989/28115 co-relation queries the response was YES. [2023-01-27 20:53:43,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25873 conditions, 5568 events. 2771/5568 cut-off events. For 27989/28115 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 41496 event pairs, 2230 based on Foata normal form. 28/5537 useless extension candidates. Maximal degree in co-relation 25811. Up to 4927 conditions per place. [2023-01-27 20:53:43,760 INFO L137 encePairwiseOnDemand]: 324/327 looper letters, 94 selfloop transitions, 2 changer transitions 8/127 dead transitions. [2023-01-27 20:53:43,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 1349 flow [2023-01-27 20:53:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:53:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:53:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-01-27 20:53:43,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045871559633027 [2023-01-27 20:53:43,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-01-27 20:53:43,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-01-27 20:53:43,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:43,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-01-27 20:53:43,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,763 INFO L175 Difference]: Start difference. First operand has 136 places, 109 transitions, 1000 flow. Second operand 3 states and 495 transitions. [2023-01-27 20:53:43,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 1349 flow [2023-01-27 20:53:43,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 127 transitions, 1325 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:43,889 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 984 flow [2023-01-27 20:53:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=984, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2023-01-27 20:53:43,889 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 80 predicate places. [2023-01-27 20:53:43,890 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 984 flow [2023-01-27 20:53:43,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:43,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:43,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:43,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 20:53:43,890 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:43,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash 755991788, now seen corresponding path program 19 times [2023-01-27 20:53:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:43,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457335904] [2023-01-27 20:53:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457335904] [2023-01-27 20:53:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457335904] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:53:44,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737552486] [2023-01-27 20:53:44,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:44,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:53:44,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-27 20:53:44,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 984 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:44,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-27 20:53:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:44,482 INFO L130 PetriNetUnfolder]: 1957/3827 cut-off events. [2023-01-27 20:53:44,482 INFO L131 PetriNetUnfolder]: For 16944/16998 co-relation queries the response was YES. [2023-01-27 20:53:44,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 3827 events. 1957/3827 cut-off events. For 16944/16998 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 25777 event pairs, 1001 based on Foata normal form. 46/3860 useless extension candidates. Maximal degree in co-relation 17255. Up to 3289 conditions per place. [2023-01-27 20:53:44,501 INFO L137 encePairwiseOnDemand]: 320/327 looper letters, 93 selfloop transitions, 4 changer transitions 35/142 dead transitions. [2023-01-27 20:53:44,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 142 transitions, 1426 flow [2023-01-27 20:53:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:53:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:53:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1064 transitions. [2023-01-27 20:53:44,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648318042813456 [2023-01-27 20:53:44,503 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1064 transitions. [2023-01-27 20:53:44,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1064 transitions. [2023-01-27 20:53:44,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:44,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1064 transitions. [2023-01-27 20:53:44,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,506 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 984 flow. Second operand 7 states and 1064 transitions. [2023-01-27 20:53:44,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 142 transitions, 1426 flow [2023-01-27 20:53:44,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 142 transitions, 1410 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-27 20:53:44,539 INFO L231 Difference]: Finished difference. Result has 126 places, 98 transitions, 869 flow [2023-01-27 20:53:44,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=869, PETRI_PLACES=126, PETRI_TRANSITIONS=98} [2023-01-27 20:53:44,539 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2023-01-27 20:53:44,539 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 98 transitions, 869 flow [2023-01-27 20:53:44,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:44,539 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 20:53:44,540 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:44,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1670102416, now seen corresponding path program 20 times [2023-01-27 20:53:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:44,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448282974] [2023-01-27 20:53:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448282974] [2023-01-27 20:53:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448282974] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:44,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:53:44,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:53:44,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964342639] [2023-01-27 20:53:44,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:53:44,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 327 [2023-01-27 20:53:44,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 98 transitions, 869 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:44,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 327 [2023-01-27 20:53:44,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:44,931 INFO L130 PetriNetUnfolder]: 1011/2113 cut-off events. [2023-01-27 20:53:44,932 INFO L131 PetriNetUnfolder]: For 8968/8976 co-relation queries the response was YES. [2023-01-27 20:53:44,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8894 conditions, 2113 events. 1011/2113 cut-off events. For 8968/8976 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13663 event pairs, 272 based on Foata normal form. 45/2154 useless extension candidates. Maximal degree in co-relation 8850. Up to 640 conditions per place. [2023-01-27 20:53:44,941 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 86 selfloop transitions, 19 changer transitions 30/143 dead transitions. [2023-01-27 20:53:44,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 143 transitions, 1315 flow [2023-01-27 20:53:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:53:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:53:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1229 transitions. [2023-01-27 20:53:44,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46980122324159024 [2023-01-27 20:53:44,944 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1229 transitions. [2023-01-27 20:53:44,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1229 transitions. [2023-01-27 20:53:44,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:44,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1229 transitions. [2023-01-27 20:53:44,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.625) internal successors, (1229), 8 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,947 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,947 INFO L175 Difference]: Start difference. First operand has 126 places, 98 transitions, 869 flow. Second operand 8 states and 1229 transitions. [2023-01-27 20:53:44,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 143 transitions, 1315 flow [2023-01-27 20:53:44,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 143 transitions, 1156 flow, removed 46 selfloop flow, removed 15 redundant places. [2023-01-27 20:53:44,964 INFO L231 Difference]: Finished difference. Result has 111 places, 62 transitions, 440 flow [2023-01-27 20:53:44,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=440, PETRI_PLACES=111, PETRI_TRANSITIONS=62} [2023-01-27 20:53:44,964 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2023-01-27 20:53:44,964 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 62 transitions, 440 flow [2023-01-27 20:53:44,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:44,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:44,965 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:44,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:53:44,965 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:44,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 846629820, now seen corresponding path program 21 times [2023-01-27 20:53:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:44,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632104542] [2023-01-27 20:53:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:44,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:45,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632104542] [2023-01-27 20:53:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632104542] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725182999] [2023-01-27 20:53:45,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:53:45,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:45,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:45,677 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) [2023-01-27 20:53:45,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 20:53:45,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:53:45,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:53:45,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:45,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:45,999 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:46,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725182999] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-27 20:53:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019135484] [2023-01-27 20:53:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:46,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:53:46,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:46,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 62 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:46,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:46,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:46,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:46,914 INFO L130 PetriNetUnfolder]: 631/1282 cut-off events. [2023-01-27 20:53:46,914 INFO L131 PetriNetUnfolder]: For 3695/3774 co-relation queries the response was YES. [2023-01-27 20:53:46,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 1282 events. 631/1282 cut-off events. For 3695/3774 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7518 event pairs, 302 based on Foata normal form. 3/1230 useless extension candidates. Maximal degree in co-relation 4972. Up to 659 conditions per place. [2023-01-27 20:53:46,920 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 81 selfloop transitions, 9 changer transitions 16/124 dead transitions. [2023-01-27 20:53:46,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 124 transitions, 1010 flow [2023-01-27 20:53:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1277 transitions. [2023-01-27 20:53:46,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43391097519537886 [2023-01-27 20:53:46,921 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1277 transitions. [2023-01-27 20:53:46,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1277 transitions. [2023-01-27 20:53:46,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:46,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1277 transitions. [2023-01-27 20:53:46,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.88888888888889) internal successors, (1277), 9 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:46,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:46,924 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:46,924 INFO L175 Difference]: Start difference. First operand has 111 places, 62 transitions, 440 flow. Second operand 9 states and 1277 transitions. [2023-01-27 20:53:46,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 124 transitions, 1010 flow [2023-01-27 20:53:46,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 124 transitions, 936 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-01-27 20:53:46,932 INFO L231 Difference]: Finished difference. Result has 104 places, 66 transitions, 464 flow [2023-01-27 20:53:46,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=464, PETRI_PLACES=104, PETRI_TRANSITIONS=66} [2023-01-27 20:53:46,932 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2023-01-27 20:53:46,933 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 66 transitions, 464 flow [2023-01-27 20:53:46,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:46,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:46,933 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:46,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:47,133 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,SelfDestructingSolverStorable21 [2023-01-27 20:53:47,133 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:47,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1727604590, now seen corresponding path program 22 times [2023-01-27 20:53:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:47,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038314238] [2023-01-27 20:53:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038314238] [2023-01-27 20:53:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038314238] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49273501] [2023-01-27 20:53:48,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:53:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:48,177 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) [2023-01-27 20:53:48,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 20:53:48,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:53:48,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:48,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 20:53:48,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:48,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:48,386 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:48,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49273501] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:48,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:48,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-27 20:53:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924527559] [2023-01-27 20:53:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:53:48,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:48,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 66 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:48,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:48,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:48,773 INFO L130 PetriNetUnfolder]: 653/1350 cut-off events. [2023-01-27 20:53:48,774 INFO L131 PetriNetUnfolder]: For 3247/3293 co-relation queries the response was YES. [2023-01-27 20:53:48,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 1350 events. 653/1350 cut-off events. For 3247/3293 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8088 event pairs, 322 based on Foata normal form. 3/1298 useless extension candidates. Maximal degree in co-relation 5316. Up to 731 conditions per place. [2023-01-27 20:53:48,779 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 97 selfloop transitions, 12 changer transitions 11/138 dead transitions. [2023-01-27 20:53:48,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 138 transitions, 1082 flow [2023-01-27 20:53:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:53:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:53:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1423 transitions. [2023-01-27 20:53:48,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43516819571865445 [2023-01-27 20:53:48,781 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1423 transitions. [2023-01-27 20:53:48,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1423 transitions. [2023-01-27 20:53:48,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:48,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1423 transitions. [2023-01-27 20:53:48,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:48,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:48,784 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:48,784 INFO L175 Difference]: Start difference. First operand has 104 places, 66 transitions, 464 flow. Second operand 10 states and 1423 transitions. [2023-01-27 20:53:48,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 138 transitions, 1082 flow [2023-01-27 20:53:48,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 138 transitions, 1043 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:48,790 INFO L231 Difference]: Finished difference. Result has 108 places, 69 transitions, 494 flow [2023-01-27 20:53:48,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=108, PETRI_TRANSITIONS=69} [2023-01-27 20:53:48,790 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2023-01-27 20:53:48,790 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 69 transitions, 494 flow [2023-01-27 20:53:48,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:48,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:48,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:48,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:48,991 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,SelfDestructingSolverStorable22 [2023-01-27 20:53:48,991 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:48,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -261863682, now seen corresponding path program 23 times [2023-01-27 20:53:48,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:48,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125229196] [2023-01-27 20:53:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:48,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125229196] [2023-01-27 20:53:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125229196] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219088364] [2023-01-27 20:53:49,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:53:49,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:49,633 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) [2023-01-27 20:53:49,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 20:53:49,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:53:49,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:49,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:53:49,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:49,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:49,871 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:49,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:49,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219088364] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:49,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:49,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2023-01-27 20:53:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006100650] [2023-01-27 20:53:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:49,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:53:49,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:53:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:53:49,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-01-27 20:53:49,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 69 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:49,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:49,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-01-27 20:53:49,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:50,188 INFO L130 PetriNetUnfolder]: 645/1314 cut-off events. [2023-01-27 20:53:50,188 INFO L131 PetriNetUnfolder]: For 3171/3217 co-relation queries the response was YES. [2023-01-27 20:53:50,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5333 conditions, 1314 events. 645/1314 cut-off events. For 3171/3217 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7771 event pairs, 328 based on Foata normal form. 3/1262 useless extension candidates. Maximal degree in co-relation 5299. Up to 731 conditions per place. [2023-01-27 20:53:50,194 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 71 selfloop transitions, 10 changer transitions 26/125 dead transitions. [2023-01-27 20:53:50,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 125 transitions, 1003 flow [2023-01-27 20:53:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:53:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:53:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1147 transitions. [2023-01-27 20:53:50,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43845565749235477 [2023-01-27 20:53:50,195 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1147 transitions. [2023-01-27 20:53:50,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1147 transitions. [2023-01-27 20:53:50,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:50,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1147 transitions. [2023-01-27 20:53:50,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 143.375) internal successors, (1147), 8 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:50,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:50,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:50,199 INFO L175 Difference]: Start difference. First operand has 108 places, 69 transitions, 494 flow. Second operand 8 states and 1147 transitions. [2023-01-27 20:53:50,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 125 transitions, 1003 flow [2023-01-27 20:53:50,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 968 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:50,206 INFO L231 Difference]: Finished difference. Result has 109 places, 67 transitions, 468 flow [2023-01-27 20:53:50,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=468, PETRI_PLACES=109, PETRI_TRANSITIONS=67} [2023-01-27 20:53:50,207 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2023-01-27 20:53:50,207 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 67 transitions, 468 flow [2023-01-27 20:53:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:50,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:50,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:50,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:50,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:50,413 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:50,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash -537786768, now seen corresponding path program 24 times [2023-01-27 20:53:50,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:50,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674333047] [2023-01-27 20:53:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:50,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674333047] [2023-01-27 20:53:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674333047] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535532003] [2023-01-27 20:53:51,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:53:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:51,113 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) [2023-01-27 20:53:51,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 20:53:51,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 20:53:51,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:51,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 20:53:51,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:51,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:51,363 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 18 treesize of output 20 [2023-01-27 20:53:51,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:51,419 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:51,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:51,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535532003] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:51,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:51,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-01-27 20:53:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410270585] [2023-01-27 20:53:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:53:51,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:51,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 67 transitions, 468 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:51,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:51,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:51,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:51,780 INFO L130 PetriNetUnfolder]: 579/1226 cut-off events. [2023-01-27 20:53:51,781 INFO L131 PetriNetUnfolder]: For 2652/2698 co-relation queries the response was YES. [2023-01-27 20:53:51,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4835 conditions, 1226 events. 579/1226 cut-off events. For 2652/2698 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7270 event pairs, 337 based on Foata normal form. 3/1174 useless extension candidates. Maximal degree in co-relation 4801. Up to 634 conditions per place. [2023-01-27 20:53:51,785 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 56 selfloop transitions, 9 changer transitions 27/110 dead transitions. [2023-01-27 20:53:51,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 881 flow [2023-01-27 20:53:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:53:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:53:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1077 transitions. [2023-01-27 20:53:51,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.411697247706422 [2023-01-27 20:53:51,787 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1077 transitions. [2023-01-27 20:53:51,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1077 transitions. [2023-01-27 20:53:51,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:51,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1077 transitions. [2023-01-27 20:53:51,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.625) internal successors, (1077), 8 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:51,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:51,789 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:51,789 INFO L175 Difference]: Start difference. First operand has 109 places, 67 transitions, 468 flow. Second operand 8 states and 1077 transitions. [2023-01-27 20:53:51,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 881 flow [2023-01-27 20:53:51,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 848 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-01-27 20:53:51,794 INFO L231 Difference]: Finished difference. Result has 108 places, 67 transitions, 478 flow [2023-01-27 20:53:51,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=108, PETRI_TRANSITIONS=67} [2023-01-27 20:53:51,795 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2023-01-27 20:53:51,795 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 67 transitions, 478 flow [2023-01-27 20:53:51,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:51,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:51,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:51,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:51,997 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:51,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash 831057230, now seen corresponding path program 25 times [2023-01-27 20:53:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:51,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227422347] [2023-01-27 20:53:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:52,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:52,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227422347] [2023-01-27 20:53:52,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227422347] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:52,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707476879] [2023-01-27 20:53:52,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:53:52,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:52,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:52,636 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) [2023-01-27 20:53:52,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 20:53:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:52,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 20:53:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:52,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:52,859 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 18 treesize of output 20 [2023-01-27 20:53:52,934 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:52,935 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:53:52,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:53:53,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:53,070 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-01-27 20:53:53,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:53,089 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 60 [2023-01-27 20:53:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707476879] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:53,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:53:53,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 9] total 25 [2023-01-27 20:53:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021361110] [2023-01-27 20:53:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:53,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=621, Unknown=3, NotChecked=0, Total=702 [2023-01-27 20:53:53,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:53,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 67 transitions, 478 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:53,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:53,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:53,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:53,758 INFO L130 PetriNetUnfolder]: 542/1144 cut-off events. [2023-01-27 20:53:53,758 INFO L131 PetriNetUnfolder]: For 2420/2466 co-relation queries the response was YES. [2023-01-27 20:53:53,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 1144 events. 542/1144 cut-off events. For 2420/2466 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6710 event pairs, 316 based on Foata normal form. 3/1091 useless extension candidates. Maximal degree in co-relation 4498. Up to 567 conditions per place. [2023-01-27 20:53:53,764 INFO L137 encePairwiseOnDemand]: 313/327 looper letters, 50 selfloop transitions, 18 changer transitions 22/108 dead transitions. [2023-01-27 20:53:53,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 881 flow [2023-01-27 20:53:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:53:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:53:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1324 transitions. [2023-01-27 20:53:53,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40489296636085625 [2023-01-27 20:53:53,767 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1324 transitions. [2023-01-27 20:53:53,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1324 transitions. [2023-01-27 20:53:53,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:53,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1324 transitions. [2023-01-27 20:53:53,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:53,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:53,771 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:53,771 INFO L175 Difference]: Start difference. First operand has 108 places, 67 transitions, 478 flow. Second operand 10 states and 1324 transitions. [2023-01-27 20:53:53,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 881 flow [2023-01-27 20:53:53,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 847 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-01-27 20:53:53,779 INFO L231 Difference]: Finished difference. Result has 111 places, 74 transitions, 563 flow [2023-01-27 20:53:53,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=563, PETRI_PLACES=111, PETRI_TRANSITIONS=74} [2023-01-27 20:53:53,779 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2023-01-27 20:53:53,779 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 74 transitions, 563 flow [2023-01-27 20:53:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:53,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:53,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:53,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-27 20:53:53,985 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:53,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash -552852530, now seen corresponding path program 26 times [2023-01-27 20:53:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:53,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984871628] [2023-01-27 20:53:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:53,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:54,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:54,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984871628] [2023-01-27 20:53:54,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984871628] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:54,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705489637] [2023-01-27 20:53:54,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:53:54,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:54,699 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) [2023-01-27 20:53:54,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 20:53:54,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:53:54,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:53:54,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:54,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:54,931 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 18 treesize of output 20 [2023-01-27 20:53:54,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:54,992 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:55,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705489637] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-01-27 20:53:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775904775] [2023-01-27 20:53:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:53:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:53:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:53:55,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 327 [2023-01-27 20:53:55,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 74 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:55,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:55,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 327 [2023-01-27 20:53:55,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:55,350 INFO L130 PetriNetUnfolder]: 534/1108 cut-off events. [2023-01-27 20:53:55,350 INFO L131 PetriNetUnfolder]: For 2584/2655 co-relation queries the response was YES. [2023-01-27 20:53:55,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 1108 events. 534/1108 cut-off events. For 2584/2655 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6482 event pairs, 312 based on Foata normal form. 3/1055 useless extension candidates. Maximal degree in co-relation 4643. Up to 594 conditions per place. [2023-01-27 20:53:55,355 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 30 selfloop transitions, 3 changer transitions 61/105 dead transitions. [2023-01-27 20:53:55,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 105 transitions, 903 flow [2023-01-27 20:53:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:53:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:53:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1192 transitions. [2023-01-27 20:53:55,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050288820931023 [2023-01-27 20:53:55,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1192 transitions. [2023-01-27 20:53:55,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1192 transitions. [2023-01-27 20:53:55,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1192 transitions. [2023-01-27 20:53:55,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.44444444444446) internal successors, (1192), 9 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:55,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:55,362 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 327.0) internal successors, (3270), 10 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:55,362 INFO L175 Difference]: Start difference. First operand has 111 places, 74 transitions, 563 flow. Second operand 9 states and 1192 transitions. [2023-01-27 20:53:55,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 105 transitions, 903 flow [2023-01-27 20:53:55,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 853 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-01-27 20:53:55,369 INFO L231 Difference]: Finished difference. Result has 110 places, 44 transitions, 280 flow [2023-01-27 20:53:55,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=280, PETRI_PLACES=110, PETRI_TRANSITIONS=44} [2023-01-27 20:53:55,370 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-01-27 20:53:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 44 transitions, 280 flow [2023-01-27 20:53:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.8) internal successors, (1278), 10 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:55,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:55,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:55,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:55,576 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,SelfDestructingSolverStorable26 [2023-01-27 20:53:55,576 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:55,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1608133964, now seen corresponding path program 27 times [2023-01-27 20:53:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:55,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526125187] [2023-01-27 20:53:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526125187] [2023-01-27 20:53:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526125187] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255575485] [2023-01-27 20:53:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:53:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:56,189 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) [2023-01-27 20:53:56,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 20:53:56,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:53:56,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:56,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 20:53:56,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:56,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:56,493 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 18 treesize of output 20 [2023-01-27 20:53:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:56,534 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 18 treesize of output 20 [2023-01-27 20:53:56,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:56,615 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:56,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255575485] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2023-01-27 20:53:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335740461] [2023-01-27 20:53:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:53:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:53:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-01-27 20:53:56,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-01-27 20:53:56,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 44 transitions, 280 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:56,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:56,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-01-27 20:53:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:57,000 INFO L130 PetriNetUnfolder]: 225/478 cut-off events. [2023-01-27 20:53:57,000 INFO L131 PetriNetUnfolder]: For 1208/1235 co-relation queries the response was YES. [2023-01-27 20:53:57,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1899 conditions, 478 events. 225/478 cut-off events. For 1208/1235 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2112 event pairs, 60 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 1867. Up to 188 conditions per place. [2023-01-27 20:53:57,002 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 45 selfloop transitions, 8 changer transitions 18/82 dead transitions. [2023-01-27 20:53:57,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 82 transitions, 616 flow [2023-01-27 20:53:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:53:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:53:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1283 transitions. [2023-01-27 20:53:57,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39235474006116206 [2023-01-27 20:53:57,004 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1283 transitions. [2023-01-27 20:53:57,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1283 transitions. [2023-01-27 20:53:57,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:57,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1283 transitions. [2023-01-27 20:53:57,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 128.3) internal successors, (1283), 10 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:57,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:57,006 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:57,006 INFO L175 Difference]: Start difference. First operand has 110 places, 44 transitions, 280 flow. Second operand 10 states and 1283 transitions. [2023-01-27 20:53:57,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 82 transitions, 616 flow [2023-01-27 20:53:57,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 500 flow, removed 20 selfloop flow, removed 29 redundant places. [2023-01-27 20:53:57,009 INFO L231 Difference]: Finished difference. Result has 73 places, 46 transitions, 226 flow [2023-01-27 20:53:57,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=226, PETRI_PLACES=73, PETRI_TRANSITIONS=46} [2023-01-27 20:53:57,009 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2023-01-27 20:53:57,010 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 46 transitions, 226 flow [2023-01-27 20:53:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:57,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:57,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:57,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:57,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-27 20:53:57,218 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:57,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:57,218 INFO L85 PathProgramCache]: Analyzing trace with hash -373248194, now seen corresponding path program 28 times [2023-01-27 20:53:57,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:57,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057107405] [2023-01-27 20:53:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:57,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:58,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:58,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057107405] [2023-01-27 20:53:58,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057107405] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651429675] [2023-01-27 20:53:58,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:53:58,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:58,045 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) [2023-01-27 20:53:58,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 20:53:58,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:53:58,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:53:58,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 20:53:58,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:53:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:58,291 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 18 treesize of output 20 [2023-01-27 20:53:58,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:53:58,335 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 18 treesize of output 20 [2023-01-27 20:53:58,434 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:53:58,434 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:53:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:53:58,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:53:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651429675] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:53:58,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:53:58,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-01-27 20:53:58,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461439676] [2023-01-27 20:53:58,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:53:58,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:53:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:53:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:53:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2023-01-27 20:53:58,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-01-27 20:53:58,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 46 transitions, 226 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:58,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:53:58,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-01-27 20:53:58,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:53:58,745 INFO L130 PetriNetUnfolder]: 211/456 cut-off events. [2023-01-27 20:53:58,745 INFO L131 PetriNetUnfolder]: For 895/922 co-relation queries the response was YES. [2023-01-27 20:53:58,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 456 events. 211/456 cut-off events. For 895/922 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2006 event pairs, 50 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 1743. Up to 180 conditions per place. [2023-01-27 20:53:58,747 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 49 selfloop transitions, 8 changer transitions 15/83 dead transitions. [2023-01-27 20:53:58,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 535 flow [2023-01-27 20:53:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:53:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:53:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1284 transitions. [2023-01-27 20:53:58,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3926605504587156 [2023-01-27 20:53:58,748 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1284 transitions. [2023-01-27 20:53:58,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1284 transitions. [2023-01-27 20:53:58,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:53:58,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1284 transitions. [2023-01-27 20:53:58,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 128.4) internal successors, (1284), 10 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:58,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:58,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 327.0) internal successors, (3597), 11 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:58,753 INFO L175 Difference]: Start difference. First operand has 73 places, 46 transitions, 226 flow. Second operand 10 states and 1284 transitions. [2023-01-27 20:53:58,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 535 flow [2023-01-27 20:53:58,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 500 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-01-27 20:53:58,755 INFO L231 Difference]: Finished difference. Result has 74 places, 45 transitions, 215 flow [2023-01-27 20:53:58,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=215, PETRI_PLACES=74, PETRI_TRANSITIONS=45} [2023-01-27 20:53:58,756 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2023-01-27 20:53:58,756 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 45 transitions, 215 flow [2023-01-27 20:53:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:53:58,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:53:58,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:53:58,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 20:53:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-27 20:53:58,962 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:53:58,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:53:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash -609402224, now seen corresponding path program 29 times [2023-01-27 20:53:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:53:58,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453368989] [2023-01-27 20:53:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:53:58,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:53:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:53:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:53:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:53:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453368989] [2023-01-27 20:53:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453368989] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:53:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995696138] [2023-01-27 20:53:59,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:53:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:53:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:53:59,948 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) [2023-01-27 20:53:59,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 20:54:00,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:54:00,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:54:00,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-27 20:54:00,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:54:00,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:54:00,214 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 18 treesize of output 20 [2023-01-27 20:54:00,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:54:00,266 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 18 treesize of output 20 [2023-01-27 20:54:00,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:54:00,336 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-01-27 20:54:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:54:00,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:54:00,400 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1198 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1198) c_~f~0.base))) (= (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2023-01-27 20:54:00,424 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1198 (Array Int Int)) (v_ArrVal_1197 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1197) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1198) c_~f~0.base))) (= (select .cse0 (+ (* 4 (select .cse0 (+ c_~f~0.offset (* c_~j~0 4)))) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2023-01-27 20:54:00,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:54:00,457 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 314 treesize of output 282 [2023-01-27 20:54:00,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:54:00,482 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 66 [2023-01-27 20:54:00,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:54:00,506 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 73 [2023-01-27 20:54:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:54:00,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995696138] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:54:00,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:54:00,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14, 10] total 30 [2023-01-27 20:54:00,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483268346] [2023-01-27 20:54:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:54:00,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:54:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:54:00,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:54:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=780, Unknown=2, NotChecked=114, Total=992 [2023-01-27 20:54:00,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-01-27 20:54:00,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 45 transitions, 215 flow. Second operand has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:54:00,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:54:00,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-01-27 20:54:00,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:54:01,173 INFO L130 PetriNetUnfolder]: 187/392 cut-off events. [2023-01-27 20:54:01,174 INFO L131 PetriNetUnfolder]: For 707/734 co-relation queries the response was YES. [2023-01-27 20:54:01,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 392 events. 187/392 cut-off events. For 707/734 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1588 event pairs, 56 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1443. Up to 164 conditions per place. [2023-01-27 20:54:01,175 INFO L137 encePairwiseOnDemand]: 319/327 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-01-27 20:54:01,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 441 flow [2023-01-27 20:54:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:54:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:54:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-01-27 20:54:01,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393348623853211 [2023-01-27 20:54:01,177 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-01-27 20:54:01,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-01-27 20:54:01,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:54:01,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-01-27 20:54:01,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:54:01,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:54:01,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 327.0) internal successors, (2943), 9 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:54:01,180 INFO L175 Difference]: Start difference. First operand has 74 places, 45 transitions, 215 flow. Second operand 8 states and 1029 transitions. [2023-01-27 20:54:01,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 441 flow [2023-01-27 20:54:01,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 423 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 20:54:01,182 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2023-01-27 20:54:01,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2023-01-27 20:54:01,183 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2023-01-27 20:54:01,183 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2023-01-27 20:54:01,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:54:01,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:54:01,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:54:01,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:54:01,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:54:01,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 20:54:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:54:01,392 INFO L445 BasicCegarLoop]: Path program histogram: [29, 1] [2023-01-27 20:54:01,394 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:54:01,394 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:54:01,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:54:01 BasicIcfg [2023-01-27 20:54:01,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:54:01,400 INFO L158 Benchmark]: Toolchain (without parser) took 94249.49ms. Allocated memory was 362.8MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 328.8MB in the beginning and 958.1MB in the end (delta: -629.3MB). Peak memory consumption was 873.3MB. Max. memory is 16.0GB. [2023-01-27 20:54:01,400 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 317.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:54:01,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.21ms. Allocated memory is still 362.8MB. Free memory was 328.4MB in the beginning and 316.2MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 20:54:01,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 362.8MB. Free memory was 316.2MB in the beginning and 314.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:54:01,404 INFO L158 Benchmark]: Boogie Preprocessor took 23.41ms. Allocated memory is still 362.8MB. Free memory was 314.1MB in the beginning and 312.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:54:01,404 INFO L158 Benchmark]: RCFGBuilder took 556.48ms. Allocated memory is still 362.8MB. Free memory was 312.4MB in the beginning and 285.6MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-27 20:54:01,404 INFO L158 Benchmark]: TraceAbstraction took 93417.58ms. Allocated memory was 362.8MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 285.1MB in the beginning and 958.1MB in the end (delta: -673.0MB). Peak memory consumption was 829.2MB. Max. memory is 16.0GB. [2023-01-27 20:54:01,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 317.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 208.21ms. Allocated memory is still 362.8MB. Free memory was 328.4MB in the beginning and 316.2MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 362.8MB. Free memory was 316.2MB in the beginning and 314.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.41ms. Allocated memory is still 362.8MB. Free memory was 314.1MB in the beginning and 312.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 556.48ms. Allocated memory is still 362.8MB. Free memory was 312.4MB in the beginning and 285.6MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 93417.58ms. Allocated memory was 362.8MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 285.1MB in the beginning and 958.1MB in the end (delta: -673.0MB). Peak memory consumption was 829.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 170 PlacesBefore, 45 PlacesAfterwards, 167 TransitionsBefore, 36 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 0 ConcurrentYvCompositions, 6 ChoiceCompositions, 147 TotalNumberOfCompositions, 7223 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3209, independent: 2894, independent conditional: 0, independent unconditional: 2894, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 654, independent: 631, independent conditional: 0, independent unconditional: 631, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3209, independent: 2263, independent conditional: 0, independent unconditional: 2263, dependent: 292, dependent conditional: 0, dependent unconditional: 292, unknown: 654, unknown conditional: 0, unknown unconditional: 654] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 172, Positive conditional cache size: 0, Positive unconditional cache size: 172, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 161]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 209 locations, 4 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: 93.3s, OverallIterations: 30, TraceHistogramMax: 2, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 53.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 40 mSolverCounterUnknown, 2923 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2923 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 286 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10177 IncrementalHoareTripleChecker+Invalid, 10594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 19 mSDtfsCounter, 10177 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1366 GetRequests, 796 SyntacticMatches, 5 SemanticMatches, 565 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1407occurred in iteration=14, InterpolantAutomatonStates: 267, 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: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 25.8s InterpolantComputationTime, 1840 NumberOfCodeBlocks, 1800 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 2005 ConstructedInterpolants, 97 QuantifiedInterpolants, 29248 SizeOfPredicates, 242 NumberOfNonLiveVariables, 5330 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 56 InterpolantComputations, 29 PerfectInterpolantSequences, 81/147 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 20:54:01,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...