/usr/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 22:17:16,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 22:17:16,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 22:17:16,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 22:17:16,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 22:17:16,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 22:17:16,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 22:17:16,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 22:17:16,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 22:17:16,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 22:17:16,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 22:17:16,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 22:17:16,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 22:17:16,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 22:17:16,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 22:17:16,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 22:17:16,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 22:17:16,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 22:17:16,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 22:17:16,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 22:17:16,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 22:17:16,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 22:17:16,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 22:17:16,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 22:17:16,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 22:17:16,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 22:17:16,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 22:17:16,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 22:17:16,603 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-SemanticLbe.epf [2022-12-05 22:17:16,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 22:17:16,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 22:17:16,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 22:17:16,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 22:17:16,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 22:17:16,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 22:17:16,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 22:17:16,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 22:17:16,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:17:16,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 22:17:16,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 22:17:16,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 22:17:16,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 22:17:16,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 22:17:16,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 22:17:16,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 22:17:16,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 22:17:16,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 22:17:16,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 22:17:16,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 22:17:16,896 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 22:17:16,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-12-05 22:17:17,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 22:17:18,090 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 22:17:18,090 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-12-05 22:17:18,095 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa322e8d4/4343157868194b2d939de486bf41a42c/FLAGe8fca28ba [2022-12-05 22:17:18,111 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa322e8d4/4343157868194b2d939de486bf41a42c [2022-12-05 22:17:18,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 22:17:18,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 22:17:18,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 22:17:18,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 22:17:18,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 22:17:18,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a944a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18, skipping insertion in model container [2022-12-05 22:17:18,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 22:17:18,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 22:17:18,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:18,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:18,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:18,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:18,264 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-12-05 22:17:18,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:17:18,273 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 22:17:18,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:18,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:18,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 22:17:18,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 22:17:18,291 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-12-05 22:17:18,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:17:18,302 INFO L208 MainTranslator]: Completed translation [2022-12-05 22:17:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18 WrapperNode [2022-12-05 22:17:18,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 22:17:18,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 22:17:18,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 22:17:18,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 22:17:18,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,327 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-05 22:17:18,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 22:17:18,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 22:17:18,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 22:17:18,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 22:17:18,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 22:17:18,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 22:17:18,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 22:17:18,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 22:17:18,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (1/1) ... [2022-12-05 22:17:18,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:17:18,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:18,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 22:17:18,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 22:17:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 22:17:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 22:17:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 22:17:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 22:17:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 22:17:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 22:17:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 22:17:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 22:17:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 22:17:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 22:17:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 22:17:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 22:17:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 22:17:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 22:17:18,411 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 22:17:18,472 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 22:17:18,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 22:17:18,570 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 22:17:18,574 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 22:17:18,575 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 22:17:18,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:17:18 BoogieIcfgContainer [2022-12-05 22:17:18,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 22:17:18,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 22:17:18,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 22:17:18,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 22:17:18,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 10:17:18" (1/3) ... [2022-12-05 22:17:18,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584b0e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:17:18, skipping insertion in model container [2022-12-05 22:17:18,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:17:18" (2/3) ... [2022-12-05 22:17:18,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584b0e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:17:18, skipping insertion in model container [2022-12-05 22:17:18,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:17:18" (3/3) ... [2022-12-05 22:17:18,582 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-12-05 22:17:18,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 22:17:18,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 22:17:18,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 22:17:18,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 22:17:18,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 176 flow [2022-12-05 22:17:18,755 INFO L130 PetriNetUnfolder]: 6/78 cut-off events. [2022-12-05 22:17:18,755 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:17:18,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-12-05 22:17:18,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 176 flow [2022-12-05 22:17:18,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 152 flow [2022-12-05 22:17:18,767 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 22:17:18,781 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 70 transitions, 152 flow [2022-12-05 22:17:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 70 transitions, 152 flow [2022-12-05 22:17:18,806 INFO L130 PetriNetUnfolder]: 6/70 cut-off events. [2022-12-05 22:17:18,806 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:17:18,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 6/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-12-05 22:17:18,808 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 70 transitions, 152 flow [2022-12-05 22:17:18,808 INFO L188 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-05 22:17:20,595 INFO L203 LiptonReduction]: Total number of compositions: 55 [2022-12-05 22:17:20,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 22:17:20,608 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;@51fa2cc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 22:17:20,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 22:17:20,612 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-05 22:17:20,612 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:17:20,612 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:20,612 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:20,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:20,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1773824805, now seen corresponding path program 1 times [2022-12-05 22:17:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443618599] [2022-12-05 22:17:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:20,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443618599] [2022-12-05 22:17:20,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443618599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:20,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:20,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:20,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931705291] [2022-12-05 22:17:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:20,979 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:20,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:20,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:20,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:20,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:21,105 INFO L130 PetriNetUnfolder]: 42/82 cut-off events. [2022-12-05 22:17:21,105 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-05 22:17:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 82 events. 42/82 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 7 based on Foata normal form. 1/65 useless extension candidates. Maximal degree in co-relation 132. Up to 34 conditions per place. [2022-12-05 22:17:21,106 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 23 selfloop transitions, 8 changer transitions 5/36 dead transitions. [2022-12-05 22:17:21,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 165 flow [2022-12-05 22:17:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 37 transitions. [2022-12-05 22:17:21,115 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2022-12-05 22:17:21,116 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 7 states and 37 transitions. [2022-12-05 22:17:21,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 165 flow [2022-12-05 22:17:21,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:21,119 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 84 flow [2022-12-05 22:17:21,120 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2022-12-05 22:17:21,122 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2022-12-05 22:17:21,123 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 84 flow [2022-12-05 22:17:21,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,123 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:21,123 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:21,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 22:17:21,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1697445439, now seen corresponding path program 2 times [2022-12-05 22:17:21,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:21,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773598261] [2022-12-05 22:17:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:21,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:21,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773598261] [2022-12-05 22:17:21,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773598261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:21,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:21,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696227320] [2022-12-05 22:17:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:21,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:21,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:21,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:21,251 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:21,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 84 flow. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:21,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:21,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:21,335 INFO L130 PetriNetUnfolder]: 47/91 cut-off events. [2022-12-05 22:17:21,335 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-12-05 22:17:21,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 91 events. 47/91 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 1 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 251. Up to 25 conditions per place. [2022-12-05 22:17:21,336 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 30 selfloop transitions, 9 changer transitions 5/44 dead transitions. [2022-12-05 22:17:21,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 236 flow [2022-12-05 22:17:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 43 transitions. [2022-12-05 22:17:21,337 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2022-12-05 22:17:21,337 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 84 flow. Second operand 7 states and 43 transitions. [2022-12-05 22:17:21,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 236 flow [2022-12-05 22:17:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 228 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:21,339 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 108 flow [2022-12-05 22:17:21,339 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-12-05 22:17:21,339 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2022-12-05 22:17:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 108 flow [2022-12-05 22:17:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,340 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:21,340 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 22:17:21,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash 421870587, now seen corresponding path program 3 times [2022-12-05 22:17:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186753939] [2022-12-05 22:17:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:21,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186753939] [2022-12-05 22:17:21,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186753939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:21,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:21,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532076769] [2022-12-05 22:17:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:21,525 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:21,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 108 flow. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:21,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:21,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:21,646 INFO L130 PetriNetUnfolder]: 53/101 cut-off events. [2022-12-05 22:17:21,647 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-05 22:17:21,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 101 events. 53/101 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 227 event pairs, 5 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 316. Up to 58 conditions per place. [2022-12-05 22:17:21,648 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 26 selfloop transitions, 12 changer transitions 5/43 dead transitions. [2022-12-05 22:17:21,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 265 flow [2022-12-05 22:17:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 41 transitions. [2022-12-05 22:17:21,649 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2022-12-05 22:17:21,649 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 108 flow. Second operand 7 states and 41 transitions. [2022-12-05 22:17:21,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 265 flow [2022-12-05 22:17:21,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 232 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-05 22:17:21,651 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 158 flow [2022-12-05 22:17:21,651 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2022-12-05 22:17:21,651 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2022-12-05 22:17:21,652 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 158 flow [2022-12-05 22:17:21,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,652 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:21,652 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 22:17:21,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash 57530631, now seen corresponding path program 4 times [2022-12-05 22:17:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:21,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057886110] [2022-12-05 22:17:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:21,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:21,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057886110] [2022-12-05 22:17:21,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057886110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:21,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:21,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673135918] [2022-12-05 22:17:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:21,810 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:21,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 158 flow. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:21,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:21,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:21,901 INFO L130 PetriNetUnfolder]: 61/113 cut-off events. [2022-12-05 22:17:21,901 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2022-12-05 22:17:21,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 113 events. 61/113 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 274 event pairs, 5 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 393. Up to 65 conditions per place. [2022-12-05 22:17:21,903 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 31 selfloop transitions, 15 changer transitions 5/51 dead transitions. [2022-12-05 22:17:21,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 358 flow [2022-12-05 22:17:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 43 transitions. [2022-12-05 22:17:21,904 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2022-12-05 22:17:21,904 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 158 flow. Second operand 7 states and 43 transitions. [2022-12-05 22:17:21,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 358 flow [2022-12-05 22:17:21,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 322 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:21,906 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 226 flow [2022-12-05 22:17:21,906 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-12-05 22:17:21,906 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2022-12-05 22:17:21,906 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 226 flow [2022-12-05 22:17:21,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,907 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:21,907 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 22:17:21,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1135292535, now seen corresponding path program 5 times [2022-12-05 22:17:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:21,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450233533] [2022-12-05 22:17:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:21,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450233533] [2022-12-05 22:17:21,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450233533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:21,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:21,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:21,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953552545] [2022-12-05 22:17:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:21,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:21,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:21,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:21,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:21,992 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:21,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 226 flow. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:21,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:21,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:21,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:22,086 INFO L130 PetriNetUnfolder]: 66/122 cut-off events. [2022-12-05 22:17:22,086 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2022-12-05 22:17:22,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 122 events. 66/122 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 310 event pairs, 5 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 471. Up to 70 conditions per place. [2022-12-05 22:17:22,088 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 34 selfloop transitions, 15 changer transitions 5/54 dead transitions. [2022-12-05 22:17:22,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 406 flow [2022-12-05 22:17:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 45 transitions. [2022-12-05 22:17:22,089 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-05 22:17:22,089 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 226 flow. Second operand 7 states and 45 transitions. [2022-12-05 22:17:22,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 406 flow [2022-12-05 22:17:22,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 360 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:22,091 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 226 flow [2022-12-05 22:17:22,091 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2022-12-05 22:17:22,092 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2022-12-05 22:17:22,092 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 226 flow [2022-12-05 22:17:22,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,092 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:22,092 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:22,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 22:17:22,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:22,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1411963687, now seen corresponding path program 6 times [2022-12-05 22:17:22,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:22,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456932572] [2022-12-05 22:17:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:22,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456932572] [2022-12-05 22:17:22,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456932572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:22,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:22,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079410165] [2022-12-05 22:17:22,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:22,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:22,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:22,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:22,187 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:22,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 226 flow. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:22,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:22,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:22,283 INFO L130 PetriNetUnfolder]: 69/129 cut-off events. [2022-12-05 22:17:22,283 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-12-05 22:17:22,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 129 events. 69/129 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 334 event pairs, 9 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 509. Up to 77 conditions per place. [2022-12-05 22:17:22,284 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 33 selfloop transitions, 15 changer transitions 5/53 dead transitions. [2022-12-05 22:17:22,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 409 flow [2022-12-05 22:17:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 43 transitions. [2022-12-05 22:17:22,285 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2022-12-05 22:17:22,285 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 226 flow. Second operand 7 states and 43 transitions. [2022-12-05 22:17:22,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 409 flow [2022-12-05 22:17:22,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 371 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-05 22:17:22,287 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 236 flow [2022-12-05 22:17:22,288 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2022-12-05 22:17:22,288 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 26 predicate places. [2022-12-05 22:17:22,288 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 236 flow [2022-12-05 22:17:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,288 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:22,288 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:22,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 22:17:22,289 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1091299152, now seen corresponding path program 1 times [2022-12-05 22:17:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:22,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159071232] [2022-12-05 22:17:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:22,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159071232] [2022-12-05 22:17:22,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159071232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:22,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:22,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84123467] [2022-12-05 22:17:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:22,315 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:22,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:22,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:22,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:22,388 INFO L130 PetriNetUnfolder]: 104/195 cut-off events. [2022-12-05 22:17:22,388 INFO L131 PetriNetUnfolder]: For 621/621 co-relation queries the response was YES. [2022-12-05 22:17:22,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 195 events. 104/195 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 617 event pairs, 14 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 783. Up to 78 conditions per place. [2022-12-05 22:17:22,389 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2022-12-05 22:17:22,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 572 flow [2022-12-05 22:17:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2022-12-05 22:17:22,390 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2022-12-05 22:17:22,390 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 236 flow. Second operand 7 states and 46 transitions. [2022-12-05 22:17:22,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 572 flow [2022-12-05 22:17:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 518 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-05 22:17:22,393 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 362 flow [2022-12-05 22:17:22,393 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2022-12-05 22:17:22,393 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2022-12-05 22:17:22,393 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 362 flow [2022-12-05 22:17:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,394 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:22,394 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:22,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 22:17:22,394 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1435396409, now seen corresponding path program 1 times [2022-12-05 22:17:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:22,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160177576] [2022-12-05 22:17:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:22,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:22,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160177576] [2022-12-05 22:17:22,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160177576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:22,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:22,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732281778] [2022-12-05 22:17:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:22,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:22,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:22,420 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:22,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:22,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:22,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:22,489 INFO L130 PetriNetUnfolder]: 114/219 cut-off events. [2022-12-05 22:17:22,489 INFO L131 PetriNetUnfolder]: For 999/999 co-relation queries the response was YES. [2022-12-05 22:17:22,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 219 events. 114/219 cut-off events. For 999/999 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 736 event pairs, 12 based on Foata normal form. 6/225 useless extension candidates. Maximal degree in co-relation 897. Up to 86 conditions per place. [2022-12-05 22:17:22,490 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 46 selfloop transitions, 19 changer transitions 2/67 dead transitions. [2022-12-05 22:17:22,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 626 flow [2022-12-05 22:17:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 22:17:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 22:17:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2022-12-05 22:17:22,491 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2022-12-05 22:17:22,491 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 362 flow. Second operand 6 states and 41 transitions. [2022-12-05 22:17:22,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 626 flow [2022-12-05 22:17:22,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 600 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:22,495 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 439 flow [2022-12-05 22:17:22,495 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2022-12-05 22:17:22,495 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 37 predicate places. [2022-12-05 22:17:22,495 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 439 flow [2022-12-05 22:17:22,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,496 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:22,496 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:22,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 22:17:22,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1946089454, now seen corresponding path program 2 times [2022-12-05 22:17:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:22,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157493373] [2022-12-05 22:17:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:22,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157493373] [2022-12-05 22:17:22,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157493373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:22,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:22,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218064248] [2022-12-05 22:17:22,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:22,534 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:22,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 439 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:22,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:22,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:22,623 INFO L130 PetriNetUnfolder]: 122/245 cut-off events. [2022-12-05 22:17:22,624 INFO L131 PetriNetUnfolder]: For 1766/1766 co-relation queries the response was YES. [2022-12-05 22:17:22,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 245 events. 122/245 cut-off events. For 1766/1766 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 902 event pairs, 20 based on Foata normal form. 8/253 useless extension candidates. Maximal degree in co-relation 1033. Up to 94 conditions per place. [2022-12-05 22:17:22,625 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 63 selfloop transitions, 22 changer transitions 1/86 dead transitions. [2022-12-05 22:17:22,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 850 flow [2022-12-05 22:17:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 22:17:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 22:17:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 59 transitions. [2022-12-05 22:17:22,626 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2022-12-05 22:17:22,626 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 439 flow. Second operand 8 states and 59 transitions. [2022-12-05 22:17:22,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 850 flow [2022-12-05 22:17:22,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 789 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:22,631 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 539 flow [2022-12-05 22:17:22,631 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2022-12-05 22:17:22,632 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 45 predicate places. [2022-12-05 22:17:22,632 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 539 flow [2022-12-05 22:17:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,632 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:22,632 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 22:17:22,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1849153793, now seen corresponding path program 2 times [2022-12-05 22:17:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:22,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205167599] [2022-12-05 22:17:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205167599] [2022-12-05 22:17:22,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205167599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196856041] [2022-12-05 22:17:22,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:17:22,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:22,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:22,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:22,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 22:17:22,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:17:22,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:22,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 22:17:22,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:22,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196856041] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:22,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 22:17:22,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-12-05 22:17:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277515914] [2022-12-05 22:17:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:22,765 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:22,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:22,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:22,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:22,842 INFO L130 PetriNetUnfolder]: 124/249 cut-off events. [2022-12-05 22:17:22,842 INFO L131 PetriNetUnfolder]: For 1629/1629 co-relation queries the response was YES. [2022-12-05 22:17:22,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 249 events. 124/249 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 917 event pairs, 8 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 1187. Up to 134 conditions per place. [2022-12-05 22:17:22,845 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 48 selfloop transitions, 23 changer transitions 0/71 dead transitions. [2022-12-05 22:17:22,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 768 flow [2022-12-05 22:17:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 22:17:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 22:17:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-12-05 22:17:22,845 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-05 22:17:22,846 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 539 flow. Second operand 5 states and 40 transitions. [2022-12-05 22:17:22,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 768 flow [2022-12-05 22:17:22,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 713 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:22,851 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 590 flow [2022-12-05 22:17:22,852 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2022-12-05 22:17:22,852 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2022-12-05 22:17:22,852 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 590 flow [2022-12-05 22:17:22,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:22,852 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:22,852 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:22,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 22:17:23,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 22:17:23,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash 632318074, now seen corresponding path program 3 times [2022-12-05 22:17:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:23,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629002628] [2022-12-05 22:17:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:23,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:23,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629002628] [2022-12-05 22:17:23,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629002628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:23,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:23,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463201341] [2022-12-05 22:17:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:23,096 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:23,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:23,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:23,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:23,172 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2022-12-05 22:17:23,173 INFO L131 PetriNetUnfolder]: For 1956/1956 co-relation queries the response was YES. [2022-12-05 22:17:23,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 233 events. 118/233 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 818 event pairs, 32 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1246. Up to 154 conditions per place. [2022-12-05 22:17:23,175 INFO L137 encePairwiseOnDemand]: 10/15 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2022-12-05 22:17:23,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 775 flow [2022-12-05 22:17:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 22:17:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 22:17:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-12-05 22:17:23,176 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-05 22:17:23,176 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 590 flow. Second operand 5 states and 35 transitions. [2022-12-05 22:17:23,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 775 flow [2022-12-05 22:17:23,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 754 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:23,182 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 586 flow [2022-12-05 22:17:23,182 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2022-12-05 22:17:23,182 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 52 predicate places. [2022-12-05 22:17:23,182 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 586 flow [2022-12-05 22:17:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,183 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:23,183 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 22:17:23,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2043321849, now seen corresponding path program 3 times [2022-12-05 22:17:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:23,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122448191] [2022-12-05 22:17:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122448191] [2022-12-05 22:17:23,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122448191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487832240] [2022-12-05 22:17:23,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 22:17:23,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:23,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:23,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:23,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 22:17:23,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 22:17:23,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 22:17:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487832240] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:23,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 22:17:23,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-12-05 22:17:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918578060] [2022-12-05 22:17:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:23,310 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:23,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:23,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:23,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:23,386 INFO L130 PetriNetUnfolder]: 146/289 cut-off events. [2022-12-05 22:17:23,387 INFO L131 PetriNetUnfolder]: For 2241/2241 co-relation queries the response was YES. [2022-12-05 22:17:23,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 289 events. 146/289 cut-off events. For 2241/2241 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1114 event pairs, 26 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 1542. Up to 160 conditions per place. [2022-12-05 22:17:23,389 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 58 selfloop transitions, 32 changer transitions 0/90 dead transitions. [2022-12-05 22:17:23,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 1050 flow [2022-12-05 22:17:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 22:17:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 22:17:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2022-12-05 22:17:23,390 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2022-12-05 22:17:23,390 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 586 flow. Second operand 6 states and 49 transitions. [2022-12-05 22:17:23,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 1050 flow [2022-12-05 22:17:23,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 90 transitions, 1020 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 22:17:23,397 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 869 flow [2022-12-05 22:17:23,397 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2022-12-05 22:17:23,398 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 59 predicate places. [2022-12-05 22:17:23,398 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 869 flow [2022-12-05 22:17:23,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,398 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:23,398 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:23,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:23,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-05 22:17:23,604 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1499265274, now seen corresponding path program 4 times [2022-12-05 22:17:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:23,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414356575] [2022-12-05 22:17:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:23,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:23,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414356575] [2022-12-05 22:17:23,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414356575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:23,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:23,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:23,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020373095] [2022-12-05 22:17:23,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:23,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:23,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:23,632 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:23,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 869 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:23,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:23,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:23,721 INFO L130 PetriNetUnfolder]: 128/261 cut-off events. [2022-12-05 22:17:23,721 INFO L131 PetriNetUnfolder]: For 2374/2374 co-relation queries the response was YES. [2022-12-05 22:17:23,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 261 events. 128/261 cut-off events. For 2374/2374 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 995 event pairs, 8 based on Foata normal form. 12/273 useless extension candidates. Maximal degree in co-relation 1523. Up to 106 conditions per place. [2022-12-05 22:17:23,724 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 59 selfloop transitions, 21 changer transitions 2/82 dead transitions. [2022-12-05 22:17:23,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 1104 flow [2022-12-05 22:17:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 22:17:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 22:17:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2022-12-05 22:17:23,725 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2022-12-05 22:17:23,725 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 869 flow. Second operand 6 states and 41 transitions. [2022-12-05 22:17:23,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 1104 flow [2022-12-05 22:17:23,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 1072 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-12-05 22:17:23,732 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 841 flow [2022-12-05 22:17:23,733 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=841, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2022-12-05 22:17:23,733 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 66 predicate places. [2022-12-05 22:17:23,733 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 841 flow [2022-12-05 22:17:23,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,733 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:23,733 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:23,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 22:17:23,734 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash -947342334, now seen corresponding path program 5 times [2022-12-05 22:17:23,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:23,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402522980] [2022-12-05 22:17:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:23,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402522980] [2022-12-05 22:17:23,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402522980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:23,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465820222] [2022-12-05 22:17:23,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 22:17:23,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:23,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:23,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:23,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 22:17:23,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:17:23,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:23,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 22:17:23,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:23,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465820222] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:23,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 22:17:23,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2022-12-05 22:17:23,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986619972] [2022-12-05 22:17:23,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:23,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 22:17:23,863 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:23,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 841 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:23,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:23,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:23,936 INFO L130 PetriNetUnfolder]: 120/235 cut-off events. [2022-12-05 22:17:23,937 INFO L131 PetriNetUnfolder]: For 2364/2364 co-relation queries the response was YES. [2022-12-05 22:17:23,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 235 events. 120/235 cut-off events. For 2364/2364 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 813 event pairs, 8 based on Foata normal form. 4/239 useless extension candidates. Maximal degree in co-relation 1391. Up to 140 conditions per place. [2022-12-05 22:17:23,939 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 50 selfloop transitions, 23 changer transitions 0/73 dead transitions. [2022-12-05 22:17:23,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 73 transitions, 997 flow [2022-12-05 22:17:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 22:17:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 22:17:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2022-12-05 22:17:23,939 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.48 [2022-12-05 22:17:23,940 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 841 flow. Second operand 5 states and 36 transitions. [2022-12-05 22:17:23,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 73 transitions, 997 flow [2022-12-05 22:17:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 915 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-05 22:17:23,949 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 752 flow [2022-12-05 22:17:23,949 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=752, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2022-12-05 22:17:23,949 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2022-12-05 22:17:23,949 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 752 flow [2022-12-05 22:17:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:23,950 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:23,950 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:23,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:24,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:24,157 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:24,157 INFO L85 PathProgramCache]: Analyzing trace with hash -175544549, now seen corresponding path program 4 times [2022-12-05 22:17:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:24,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58874668] [2022-12-05 22:17:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:24,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:24,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58874668] [2022-12-05 22:17:24,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58874668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:24,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:24,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482305421] [2022-12-05 22:17:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:24,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:24,181 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:24,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:24,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:24,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:24,265 INFO L130 PetriNetUnfolder]: 118/233 cut-off events. [2022-12-05 22:17:24,265 INFO L131 PetriNetUnfolder]: For 1985/1985 co-relation queries the response was YES. [2022-12-05 22:17:24,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 233 events. 118/233 cut-off events. For 1985/1985 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 815 event pairs, 20 based on Foata normal form. 2/235 useless extension candidates. Maximal degree in co-relation 1349. Up to 92 conditions per place. [2022-12-05 22:17:24,267 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 57 selfloop transitions, 25 changer transitions 1/83 dead transitions. [2022-12-05 22:17:24,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 1030 flow [2022-12-05 22:17:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 22:17:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 22:17:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 50 transitions. [2022-12-05 22:17:24,268 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-05 22:17:24,268 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 752 flow. Second operand 8 states and 50 transitions. [2022-12-05 22:17:24,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 1030 flow [2022-12-05 22:17:24,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 975 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-05 22:17:24,276 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 749 flow [2022-12-05 22:17:24,276 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=749, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2022-12-05 22:17:24,276 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 61 predicate places. [2022-12-05 22:17:24,276 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 749 flow [2022-12-05 22:17:24,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:24,276 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:24,277 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:24,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 22:17:24,277 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash 624460027, now seen corresponding path program 5 times [2022-12-05 22:17:24,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:24,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704625558] [2022-12-05 22:17:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704625558] [2022-12-05 22:17:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704625558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:24,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 22:17:24,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 22:17:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301347604] [2022-12-05 22:17:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:24,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 22:17:24,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 22:17:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 22:17:24,309 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:24,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 749 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:24,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:24,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:24,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:24,375 INFO L130 PetriNetUnfolder]: 113/218 cut-off events. [2022-12-05 22:17:24,375 INFO L131 PetriNetUnfolder]: For 1980/1980 co-relation queries the response was YES. [2022-12-05 22:17:24,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 218 events. 113/218 cut-off events. For 1980/1980 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 719 event pairs, 22 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 1127. Up to 92 conditions per place. [2022-12-05 22:17:24,377 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 44 selfloop transitions, 21 changer transitions 4/69 dead transitions. [2022-12-05 22:17:24,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 69 transitions, 917 flow [2022-12-05 22:17:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2022-12-05 22:17:24,378 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2022-12-05 22:17:24,378 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 749 flow. Second operand 7 states and 35 transitions. [2022-12-05 22:17:24,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 69 transitions, 917 flow [2022-12-05 22:17:24,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 69 transitions, 843 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-05 22:17:24,385 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 689 flow [2022-12-05 22:17:24,386 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=689, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2022-12-05 22:17:24,387 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 63 predicate places. [2022-12-05 22:17:24,387 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 689 flow [2022-12-05 22:17:24,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:24,387 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:24,387 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:24,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 22:17:24,387 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1800955996, now seen corresponding path program 1 times [2022-12-05 22:17:24,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:24,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049573517] [2022-12-05 22:17:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:24,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049573517] [2022-12-05 22:17:24,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049573517] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:24,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843070724] [2022-12-05 22:17:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:24,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:24,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:24,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:24,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 22:17:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:24,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:24,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:24,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843070724] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:24,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:24,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-05 22:17:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000897958] [2022-12-05 22:17:24,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 22:17:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 22:17:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-05 22:17:24,826 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:24,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 689 flow. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:24,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:24,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:24,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:25,106 INFO L130 PetriNetUnfolder]: 116/218 cut-off events. [2022-12-05 22:17:25,106 INFO L131 PetriNetUnfolder]: For 1838/1838 co-relation queries the response was YES. [2022-12-05 22:17:25,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 218 events. 116/218 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 709 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1153. Up to 53 conditions per place. [2022-12-05 22:17:25,108 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2022-12-05 22:17:25,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 1044 flow [2022-12-05 22:17:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 22:17:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 22:17:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 59 transitions. [2022-12-05 22:17:25,109 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2022-12-05 22:17:25,109 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 689 flow. Second operand 11 states and 59 transitions. [2022-12-05 22:17:25,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 1044 flow [2022-12-05 22:17:25,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 992 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-05 22:17:25,115 INFO L231 Difference]: Finished difference. Result has 89 places, 46 transitions, 557 flow [2022-12-05 22:17:25,115 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=557, PETRI_PLACES=89, PETRI_TRANSITIONS=46} [2022-12-05 22:17:25,115 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 69 predicate places. [2022-12-05 22:17:25,115 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 46 transitions, 557 flow [2022-12-05 22:17:25,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:25,115 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:25,116 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:25,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:25,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-05 22:17:25,320 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash 91057846, now seen corresponding path program 2 times [2022-12-05 22:17:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:25,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245640485] [2022-12-05 22:17:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:25,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245640485] [2022-12-05 22:17:25,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245640485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:25,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164656134] [2022-12-05 22:17:25,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:17:25,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:25,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:25,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:25,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 22:17:25,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:17:25,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:25,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:25,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:25,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:25,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164656134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:25,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:25,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-05 22:17:25,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168358542] [2022-12-05 22:17:25,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:25,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 22:17:25,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 22:17:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-12-05 22:17:25,675 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:25,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 46 transitions, 557 flow. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:25,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:25,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:25,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:25,953 INFO L130 PetriNetUnfolder]: 90/178 cut-off events. [2022-12-05 22:17:25,953 INFO L131 PetriNetUnfolder]: For 1650/1650 co-relation queries the response was YES. [2022-12-05 22:17:25,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 178 events. 90/178 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 539 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1092. Up to 55 conditions per place. [2022-12-05 22:17:25,954 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2022-12-05 22:17:25,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 80 transitions, 944 flow [2022-12-05 22:17:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 22:17:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 22:17:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2022-12-05 22:17:25,955 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2022-12-05 22:17:25,956 INFO L175 Difference]: Start difference. First operand has 89 places, 46 transitions, 557 flow. Second operand 11 states and 58 transitions. [2022-12-05 22:17:25,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 80 transitions, 944 flow [2022-12-05 22:17:25,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 806 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-12-05 22:17:25,960 INFO L231 Difference]: Finished difference. Result has 78 places, 49 transitions, 564 flow [2022-12-05 22:17:25,960 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=78, PETRI_TRANSITIONS=49} [2022-12-05 22:17:25,961 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2022-12-05 22:17:25,961 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 49 transitions, 564 flow [2022-12-05 22:17:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:25,961 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:25,961 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:25,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:26,165 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,SelfDestructingSolverStorable17 [2022-12-05 22:17:26,166 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 123174466, now seen corresponding path program 3 times [2022-12-05 22:17:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970881303] [2022-12-05 22:17:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:26,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970881303] [2022-12-05 22:17:26,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970881303] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:26,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060496363] [2022-12-05 22:17:26,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 22:17:26,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:26,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:26,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:26,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 22:17:26,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-05 22:17:26,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:26,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:26,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:26,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:26,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060496363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:26,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:26,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-05 22:17:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220481095] [2022-12-05 22:17:26,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 22:17:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 22:17:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-05 22:17:26,551 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:26,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 49 transitions, 564 flow. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:26,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:26,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:26,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:26,776 INFO L130 PetriNetUnfolder]: 84/173 cut-off events. [2022-12-05 22:17:26,776 INFO L131 PetriNetUnfolder]: For 981/981 co-relation queries the response was YES. [2022-12-05 22:17:26,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 173 events. 84/173 cut-off events. For 981/981 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 528 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 1002. Up to 55 conditions per place. [2022-12-05 22:17:26,777 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2022-12-05 22:17:26,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 833 flow [2022-12-05 22:17:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 22:17:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 22:17:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2022-12-05 22:17:26,778 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2022-12-05 22:17:26,778 INFO L175 Difference]: Start difference. First operand has 78 places, 49 transitions, 564 flow. Second operand 11 states and 52 transitions. [2022-12-05 22:17:26,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 833 flow [2022-12-05 22:17:26,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 773 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-05 22:17:26,781 INFO L231 Difference]: Finished difference. Result has 78 places, 37 transitions, 382 flow [2022-12-05 22:17:26,781 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=78, PETRI_TRANSITIONS=37} [2022-12-05 22:17:26,782 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2022-12-05 22:17:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 37 transitions, 382 flow [2022-12-05 22:17:26,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:26,782 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:26,782 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:26,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:26,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:26,986 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash -411251526, now seen corresponding path program 4 times [2022-12-05 22:17:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:26,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714307968] [2022-12-05 22:17:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:26,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:27,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:27,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714307968] [2022-12-05 22:17:27,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714307968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:27,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994922250] [2022-12-05 22:17:27,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 22:17:27,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:27,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:27,072 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:27,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 22:17:27,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 22:17:27,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:27,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:27,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:27,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994922250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:27,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:27,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-05 22:17:27,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257206726] [2022-12-05 22:17:27,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:27,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 22:17:27,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:27,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 22:17:27,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-05 22:17:27,365 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:27,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 37 transitions, 382 flow. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:27,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:27,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:27,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:27,777 INFO L130 PetriNetUnfolder]: 75/169 cut-off events. [2022-12-05 22:17:27,777 INFO L131 PetriNetUnfolder]: For 900/900 co-relation queries the response was YES. [2022-12-05 22:17:27,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 169 events. 75/169 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 550 event pairs, 1 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 929. Up to 39 conditions per place. [2022-12-05 22:17:27,778 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 37 selfloop transitions, 27 changer transitions 18/82 dead transitions. [2022-12-05 22:17:27,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 868 flow [2022-12-05 22:17:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 22:17:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 22:17:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 73 transitions. [2022-12-05 22:17:27,779 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.28627450980392155 [2022-12-05 22:17:27,779 INFO L175 Difference]: Start difference. First operand has 78 places, 37 transitions, 382 flow. Second operand 17 states and 73 transitions. [2022-12-05 22:17:27,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 868 flow [2022-12-05 22:17:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 769 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-12-05 22:17:27,783 INFO L231 Difference]: Finished difference. Result has 81 places, 46 transitions, 508 flow [2022-12-05 22:17:27,783 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=508, PETRI_PLACES=81, PETRI_TRANSITIONS=46} [2022-12-05 22:17:27,783 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 61 predicate places. [2022-12-05 22:17:27,783 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 46 transitions, 508 flow [2022-12-05 22:17:27,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:27,783 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:27,783 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:27,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:27,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:27,988 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1271909994, now seen corresponding path program 5 times [2022-12-05 22:17:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:27,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868572640] [2022-12-05 22:17:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:28,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868572640] [2022-12-05 22:17:28,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868572640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720320865] [2022-12-05 22:17:28,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 22:17:28,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:28,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:28,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:28,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 22:17:28,133 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:17:28,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-05 22:17:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:28,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 22:17:28,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720320865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 22:17:28,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 22:17:28,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-12-05 22:17:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810868170] [2022-12-05 22:17:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 22:17:28,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 22:17:28,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:28,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 22:17:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-05 22:17:28,187 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:28,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 46 transitions, 508 flow. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:28,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:28,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:28,253 INFO L130 PetriNetUnfolder]: 66/132 cut-off events. [2022-12-05 22:17:28,253 INFO L131 PetriNetUnfolder]: For 774/774 co-relation queries the response was YES. [2022-12-05 22:17:28,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 132 events. 66/132 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 350 event pairs, 8 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 785. Up to 40 conditions per place. [2022-12-05 22:17:28,254 INFO L137 encePairwiseOnDemand]: 9/15 looper letters, 27 selfloop transitions, 9 changer transitions 20/56 dead transitions. [2022-12-05 22:17:28,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 56 transitions, 667 flow [2022-12-05 22:17:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 22:17:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 22:17:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2022-12-05 22:17:28,255 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3047619047619048 [2022-12-05 22:17:28,255 INFO L175 Difference]: Start difference. First operand has 81 places, 46 transitions, 508 flow. Second operand 7 states and 32 transitions. [2022-12-05 22:17:28,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 56 transitions, 667 flow [2022-12-05 22:17:28,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 56 transitions, 551 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-12-05 22:17:28,258 INFO L231 Difference]: Finished difference. Result has 73 places, 33 transitions, 295 flow [2022-12-05 22:17:28,258 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=73, PETRI_TRANSITIONS=33} [2022-12-05 22:17:28,258 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 53 predicate places. [2022-12-05 22:17:28,259 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 33 transitions, 295 flow [2022-12-05 22:17:28,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:28,259 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:28,259 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:28,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 22:17:28,463 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,SelfDestructingSolverStorable20 [2022-12-05 22:17:28,464 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1021454782, now seen corresponding path program 6 times [2022-12-05 22:17:28,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:28,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197848334] [2022-12-05 22:17:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:28,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:28,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197848334] [2022-12-05 22:17:28,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197848334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:28,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878921976] [2022-12-05 22:17:28,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 22:17:28,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:28,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:28,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 22:17:28,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-05 22:17:28,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:28,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:28,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:28,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:28,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878921976] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:28,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:28,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-05 22:17:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027421727] [2022-12-05 22:17:28,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 22:17:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 22:17:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-12-05 22:17:28,882 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:28,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 33 transitions, 295 flow. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:28,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:28,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:28,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:29,385 INFO L130 PetriNetUnfolder]: 51/118 cut-off events. [2022-12-05 22:17:29,385 INFO L131 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2022-12-05 22:17:29,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 118 events. 51/118 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 329 event pairs, 3 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 598. Up to 23 conditions per place. [2022-12-05 22:17:29,386 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 24 selfloop transitions, 16 changer transitions 28/68 dead transitions. [2022-12-05 22:17:29,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 574 flow [2022-12-05 22:17:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 22:17:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 22:17:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 66 transitions. [2022-12-05 22:17:29,387 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.25882352941176473 [2022-12-05 22:17:29,387 INFO L175 Difference]: Start difference. First operand has 73 places, 33 transitions, 295 flow. Second operand 17 states and 66 transitions. [2022-12-05 22:17:29,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 574 flow [2022-12-05 22:17:29,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 522 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-12-05 22:17:29,390 INFO L231 Difference]: Finished difference. Result has 73 places, 29 transitions, 245 flow [2022-12-05 22:17:29,390 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=245, PETRI_PLACES=73, PETRI_TRANSITIONS=29} [2022-12-05 22:17:29,390 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 53 predicate places. [2022-12-05 22:17:29,390 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 29 transitions, 245 flow [2022-12-05 22:17:29,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:29,391 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:29,391 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:29,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-05 22:17:29,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:29,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1361995982, now seen corresponding path program 7 times [2022-12-05 22:17:29,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:29,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764107676] [2022-12-05 22:17:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:29,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:29,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764107676] [2022-12-05 22:17:29,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764107676] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976146107] [2022-12-05 22:17:29,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 22:17:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:29,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:29,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:29,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 22:17:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:29,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:29,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:29,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:30,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976146107] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:30,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:30,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-05 22:17:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594156704] [2022-12-05 22:17:30,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:30,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 22:17:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 22:17:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-05 22:17:30,009 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:30,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 29 transitions, 245 flow. Second operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:30,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:30,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:30,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:30,241 INFO L130 PetriNetUnfolder]: 36/84 cut-off events. [2022-12-05 22:17:30,241 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-12-05 22:17:30,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 84 events. 36/84 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 3 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 413. Up to 23 conditions per place. [2022-12-05 22:17:30,242 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 22 selfloop transitions, 13 changer transitions 9/44 dead transitions. [2022-12-05 22:17:30,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 44 transitions, 388 flow [2022-12-05 22:17:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 22:17:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 22:17:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 37 transitions. [2022-12-05 22:17:30,243 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.22424242424242424 [2022-12-05 22:17:30,243 INFO L175 Difference]: Start difference. First operand has 73 places, 29 transitions, 245 flow. Second operand 11 states and 37 transitions. [2022-12-05 22:17:30,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 44 transitions, 388 flow [2022-12-05 22:17:30,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 44 transitions, 346 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-12-05 22:17:30,245 INFO L231 Difference]: Finished difference. Result has 62 places, 28 transitions, 223 flow [2022-12-05 22:17:30,245 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=223, PETRI_PLACES=62, PETRI_TRANSITIONS=28} [2022-12-05 22:17:30,245 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 42 predicate places. [2022-12-05 22:17:30,245 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 28 transitions, 223 flow [2022-12-05 22:17:30,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:30,246 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:17:30,246 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 22:17:30,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-05 22:17:30,450 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,SelfDestructingSolverStorable22 [2022-12-05 22:17:30,451 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:17:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:17:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 617731522, now seen corresponding path program 8 times [2022-12-05 22:17:30,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:17:30,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809269233] [2022-12-05 22:17:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:17:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:17:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 22:17:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:30,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 22:17:30,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809269233] [2022-12-05 22:17:30,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809269233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 22:17:30,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833093384] [2022-12-05 22:17:30,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 22:17:30,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:17:30,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:17:30,545 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 22:17:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 22:17:30,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 22:17:30,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 22:17:30,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-05 22:17:30,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 22:17:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:30,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 22:17:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 22:17:30,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833093384] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 22:17:30,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 22:17:30,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-05 22:17:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691948675] [2022-12-05 22:17:30,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 22:17:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 22:17:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 22:17:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 22:17:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-12-05 22:17:30,853 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-05 22:17:30,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 28 transitions, 223 flow. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:30,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 22:17:30,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-05 22:17:30,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 22:17:31,004 INFO L130 PetriNetUnfolder]: 32/70 cut-off events. [2022-12-05 22:17:31,004 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2022-12-05 22:17:31,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 70 events. 32/70 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 337. Up to 23 conditions per place. [2022-12-05 22:17:31,005 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-12-05 22:17:31,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 34 transitions, 311 flow [2022-12-05 22:17:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 22:17:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 22:17:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 27 transitions. [2022-12-05 22:17:31,006 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2 [2022-12-05 22:17:31,006 INFO L175 Difference]: Start difference. First operand has 62 places, 28 transitions, 223 flow. Second operand 9 states and 27 transitions. [2022-12-05 22:17:31,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 34 transitions, 311 flow [2022-12-05 22:17:31,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 34 transitions, 293 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 22:17:31,007 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2022-12-05 22:17:31,007 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2022-12-05 22:17:31,007 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 40 predicate places. [2022-12-05 22:17:31,007 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2022-12-05 22:17:31,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 22:17:31,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 22:17:31,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 22:17:31,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 22:17:31,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-05 22:17:31,214 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,SelfDestructingSolverStorable23 [2022-12-05 22:17:31,215 INFO L458 BasicCegarLoop]: Path program histogram: [8, 6, 5, 5] [2022-12-05 22:17:31,217 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:17:31,217 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:17:31,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:17:31 BasicIcfg [2022-12-05 22:17:31,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:17:31,219 INFO L158 Benchmark]: Toolchain (without parser) took 13104.76ms. Allocated memory was 198.2MB in the beginning and 393.2MB in the end (delta: 195.0MB). Free memory was 157.1MB in the beginning and 257.2MB in the end (delta: -100.1MB). Peak memory consumption was 94.9MB. Max. memory is 8.0GB. [2022-12-05 22:17:31,219 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory was 174.4MB in the beginning and 174.4MB in the end (delta: 63.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:17:31,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.96ms. Allocated memory is still 198.2MB. Free memory was 157.1MB in the beginning and 145.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-05 22:17:31,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.50ms. Allocated memory is still 198.2MB. Free memory was 145.9MB in the beginning and 144.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 22:17:31,219 INFO L158 Benchmark]: Boogie Preprocessor took 26.89ms. Allocated memory is still 198.2MB. Free memory was 144.5MB in the beginning and 142.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:17:31,220 INFO L158 Benchmark]: RCFGBuilder took 220.92ms. Allocated memory is still 198.2MB. Free memory was 142.9MB in the beginning and 130.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 22:17:31,220 INFO L158 Benchmark]: TraceAbstraction took 12640.85ms. Allocated memory was 198.2MB in the beginning and 393.2MB in the end (delta: 195.0MB). Free memory was 129.8MB in the beginning and 257.2MB in the end (delta: -127.4MB). Peak memory consumption was 68.7MB. Max. memory is 8.0GB. [2022-12-05 22:17:31,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory was 174.4MB in the beginning and 174.4MB in the end (delta: 63.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.96ms. Allocated memory is still 198.2MB. Free memory was 157.1MB in the beginning and 145.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.50ms. Allocated memory is still 198.2MB. Free memory was 145.9MB in the beginning and 144.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.89ms. Allocated memory is still 198.2MB. Free memory was 144.5MB in the beginning and 142.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 220.92ms. Allocated memory is still 198.2MB. Free memory was 142.9MB in the beginning and 130.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 12640.85ms. Allocated memory was 198.2MB in the beginning and 393.2MB in the end (delta: 195.0MB). Free memory was 129.8MB in the beginning and 257.2MB in the end (delta: -127.4MB). Peak memory consumption was 68.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 71 PlacesBefore, 20 PlacesAfterwards, 70 TransitionsBefore, 15 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 21 ConcurrentYvCompositions, 4 ChoiceCompositions, 55 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 312, independent: 312, independent conditional: 312, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 312, independent: 312, independent conditional: 0, independent unconditional: 312, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 312, independent: 312, independent conditional: 0, independent unconditional: 312, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 312, independent: 312, independent conditional: 0, independent unconditional: 312, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 312, independent: 312, independent conditional: 0, independent unconditional: 312, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 312, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 312, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 312, unknown conditional: 0, unknown unconditional: 312] , Statistics on independence cache: Total cache size (in pairs): 517, Positive cache size: 517, Positive conditional cache size: 0, Positive unconditional cache size: 517, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 79]: 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 5 procedures, 97 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.5s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 683 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 683 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4281 IncrementalHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 0 mSDtfsCounter, 4281 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 533 GetRequests, 235 SyntacticMatches, 25 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=869occurred in iteration=12, InterpolantAutomatonStates: 199, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 500 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 602 ConstructedInterpolants, 0 QuantifiedInterpolants, 3680 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1311 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 45 InterpolantComputations, 17 PerfectInterpolantSequences, 12/62 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! [2022-12-05 22:17:31,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...