/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:39:03,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:39:03,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:39:03,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 05:39:03,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:39:03,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:39:03,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:39:03,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:39:03,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:39:03,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:39:03,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:39:03,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:39:03,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:39:03,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:39:03,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:39:03,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:39:03,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:39:03,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:39:03,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:39:03,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:39:03,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:39:03,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 05:39:03,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:39:03,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:39:03,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:39:03,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:39:03,349 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:39:03,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:39:03,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:39:03,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:39:03,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:39:03,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:39:03,351 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:39:03,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:39:03,351 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:39:03,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:39:03,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:39:03,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:39:03,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:39:03,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:39:03,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:39:03,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:39:03,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:39:03,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:39:03,354 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:39:03,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:39:03,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:39:03,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:39:03,602 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:39:03,602 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:39:03,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-01-28 05:39:04,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:39:04,929 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:39:04,930 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-01-28 05:39:04,936 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1151bd868/7db204ba0ff1401087bb9eb363128bbf/FLAG714ac55d3 [2023-01-28 05:39:04,950 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1151bd868/7db204ba0ff1401087bb9eb363128bbf [2023-01-28 05:39:04,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:39:04,953 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:39:04,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:39:04,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:39:04,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:39:04,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:39:04" (1/1) ... [2023-01-28 05:39:04,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8073dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:04, skipping insertion in model container [2023-01-28 05:39:04,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:39:04" (1/1) ... [2023-01-28 05:39:04,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:39:04,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:39:05,113 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-01-28 05:39:05,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:39:05,124 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:39:05,140 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-01-28 05:39:05,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:39:05,146 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:39:05,147 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:39:05,151 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:39:05,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05 WrapperNode [2023-01-28 05:39:05,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:39:05,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:39:05,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:39:05,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:39:05,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,179 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-01-28 05:39:05,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:39:05,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:39:05,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:39:05,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:39:05,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:39:05,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:39:05,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:39:05,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:39:05,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (1/1) ... [2023-01-28 05:39:05,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:39:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:05,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 05:39:05,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 05:39:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:39:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:39:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:39:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:39:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:39:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:39:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:39:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:39:05,265 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:39:05,343 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:39:05,345 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:39:05,533 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:39:05,539 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:39:05,539 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 05:39:05,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:39:05 BoogieIcfgContainer [2023-01-28 05:39:05,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:39:05,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:39:05,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:39:05,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:39:05,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:39:04" (1/3) ... [2023-01-28 05:39:05,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452b3b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:39:05, skipping insertion in model container [2023-01-28 05:39:05,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:39:05" (2/3) ... [2023-01-28 05:39:05,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452b3b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:39:05, skipping insertion in model container [2023-01-28 05:39:05,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:39:05" (3/3) ... [2023-01-28 05:39:05,560 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-01-28 05:39:05,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:39:05,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:39:05,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:39:05,622 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 05:39:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 178 flow [2023-01-28 05:39:05,692 INFO L130 PetriNetUnfolder]: 6/79 cut-off events. [2023-01-28 05:39:05,692 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:39:05,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 6/79 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. 0/72 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-01-28 05:39:05,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 178 flow [2023-01-28 05:39:05,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 154 flow [2023-01-28 05:39:05,723 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:39:05,740 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 71 transitions, 154 flow [2023-01-28 05:39:05,742 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 71 transitions, 154 flow [2023-01-28 05:39:05,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 154 flow [2023-01-28 05:39:05,764 INFO L130 PetriNetUnfolder]: 6/71 cut-off events. [2023-01-28 05:39:05,765 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:39:05,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 6/71 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. 0/65 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-01-28 05:39:05,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-01-28 05:39:07,580 INFO L134 LiptonReduction]: Checked pairs total: 581 [2023-01-28 05:39:07,580 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-01-28 05:39:07,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:39:07,601 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;@49e2772c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:39:07,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 05:39:07,606 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-01-28 05:39:07,606 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:39:07,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:07,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:07,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:07,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash -69252771, now seen corresponding path program 1 times [2023-01-28 05:39:07,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:07,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148129876] [2023-01-28 05:39:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:07,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148129876] [2023-01-28 05:39:08,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148129876] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:08,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:08,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712631008] [2023-01-28 05:39:08,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:08,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:08,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:08,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:08,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:08,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:08,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:08,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:08,386 INFO L130 PetriNetUnfolder]: 58/106 cut-off events. [2023-01-28 05:39:08,386 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-28 05:39:08,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 58/106 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 248 event pairs, 11 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 180. Up to 48 conditions per place. [2023-01-28 05:39:08,391 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 26 selfloop transitions, 10 changer transitions 5/41 dead transitions. [2023-01-28 05:39:08,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 185 flow [2023-01-28 05:39:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-01-28 05:39:08,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2023-01-28 05:39:08,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-01-28 05:39:08,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-01-28 05:39:08,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:08,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-01-28 05:39:08,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,433 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,434 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 7 states and 413 transitions. [2023-01-28 05:39:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 185 flow [2023-01-28 05:39:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 05:39:08,439 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 101 flow [2023-01-28 05:39:08,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-01-28 05:39:08,443 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2023-01-28 05:39:08,443 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 101 flow [2023-01-28 05:39:08,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:08,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:08,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:39:08,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:08,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash 758171711, now seen corresponding path program 2 times [2023-01-28 05:39:08,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:08,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846486616] [2023-01-28 05:39:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846486616] [2023-01-28 05:39:08,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846486616] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:08,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:08,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569137651] [2023-01-28 05:39:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:08,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:08,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:08,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:08,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:08,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:08,840 INFO L130 PetriNetUnfolder]: 96/166 cut-off events. [2023-01-28 05:39:08,840 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-01-28 05:39:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 166 events. 96/166 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 476 event pairs, 11 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 499. Up to 69 conditions per place. [2023-01-28 05:39:08,845 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 39 selfloop transitions, 14 changer transitions 5/58 dead transitions. [2023-01-28 05:39:08,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 58 transitions, 333 flow [2023-01-28 05:39:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 421 transitions. [2023-01-28 05:39:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40913508260447035 [2023-01-28 05:39:08,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 421 transitions. [2023-01-28 05:39:08,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 421 transitions. [2023-01-28 05:39:08,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:08,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 421 transitions. [2023-01-28 05:39:08,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,853 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,853 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 101 flow. Second operand 7 states and 421 transitions. [2023-01-28 05:39:08,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 58 transitions, 333 flow [2023-01-28 05:39:08,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 58 transitions, 325 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 05:39:08,857 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 198 flow [2023-01-28 05:39:08,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-01-28 05:39:08,858 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2023-01-28 05:39:08,858 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 198 flow [2023-01-28 05:39:08,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:08,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:08,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:08,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:39:08,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:08,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 649780581, now seen corresponding path program 3 times [2023-01-28 05:39:08,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:08,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470543648] [2023-01-28 05:39:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:09,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:09,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470543648] [2023-01-28 05:39:09,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470543648] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:09,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271218990] [2023-01-28 05:39:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:09,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:09,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:09,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:09,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:09,170 INFO L130 PetriNetUnfolder]: 112/190 cut-off events. [2023-01-28 05:39:09,171 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2023-01-28 05:39:09,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 190 events. 112/190 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 533 event pairs, 12 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 752. Up to 108 conditions per place. [2023-01-28 05:39:09,173 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 33 selfloop transitions, 21 changer transitions 6/60 dead transitions. [2023-01-28 05:39:09,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 460 flow [2023-01-28 05:39:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 412 transitions. [2023-01-28 05:39:09,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003887269193392 [2023-01-28 05:39:09,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 412 transitions. [2023-01-28 05:39:09,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 412 transitions. [2023-01-28 05:39:09,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:09,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 412 transitions. [2023-01-28 05:39:09,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.857142857142854) internal successors, (412), 7 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,181 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 198 flow. Second operand 7 states and 412 transitions. [2023-01-28 05:39:09,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 460 flow [2023-01-28 05:39:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 423 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-01-28 05:39:09,186 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 331 flow [2023-01-28 05:39:09,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-01-28 05:39:09,187 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 23 predicate places. [2023-01-28 05:39:09,187 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 331 flow [2023-01-28 05:39:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:09,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:09,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:39:09,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:09,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -96540297, now seen corresponding path program 4 times [2023-01-28 05:39:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136228633] [2023-01-28 05:39:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:09,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136228633] [2023-01-28 05:39:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136228633] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:09,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:09,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349970517] [2023-01-28 05:39:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:09,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:09,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:09,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:09,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:09,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:09,459 INFO L130 PetriNetUnfolder]: 115/197 cut-off events. [2023-01-28 05:39:09,459 INFO L131 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2023-01-28 05:39:09,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 197 events. 115/197 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 587 event pairs, 11 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 851. Up to 116 conditions per place. [2023-01-28 05:39:09,461 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 38 selfloop transitions, 23 changer transitions 5/66 dead transitions. [2023-01-28 05:39:09,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 553 flow [2023-01-28 05:39:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2023-01-28 05:39:09,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4062196307094266 [2023-01-28 05:39:09,464 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 418 transitions. [2023-01-28 05:39:09,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 418 transitions. [2023-01-28 05:39:09,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:09,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 418 transitions. [2023-01-28 05:39:09,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,467 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,468 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 331 flow. Second operand 7 states and 418 transitions. [2023-01-28 05:39:09,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 553 flow [2023-01-28 05:39:09,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 527 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 05:39:09,472 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 410 flow [2023-01-28 05:39:09,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-01-28 05:39:09,472 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2023-01-28 05:39:09,473 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 410 flow [2023-01-28 05:39:09,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:09,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:39:09,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:09,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1023964675, now seen corresponding path program 5 times [2023-01-28 05:39:09,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:09,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150265450] [2023-01-28 05:39:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:09,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:09,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:09,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150265450] [2023-01-28 05:39:09,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150265450] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:09,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:09,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:09,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7369924] [2023-01-28 05:39:09,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:09,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:09,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:09,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:09,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:09,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:09,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:09,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:09,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:09,699 INFO L130 PetriNetUnfolder]: 121/207 cut-off events. [2023-01-28 05:39:09,700 INFO L131 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2023-01-28 05:39:09,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 207 events. 121/207 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 638 event pairs, 8 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 990. Up to 123 conditions per place. [2023-01-28 05:39:09,702 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 40 selfloop transitions, 28 changer transitions 5/73 dead transitions. [2023-01-28 05:39:09,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 708 flow [2023-01-28 05:39:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 414 transitions. [2023-01-28 05:39:09,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40233236151603496 [2023-01-28 05:39:09,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 414 transitions. [2023-01-28 05:39:09,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 414 transitions. [2023-01-28 05:39:09,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:09,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 414 transitions. [2023-01-28 05:39:09,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,708 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 410 flow. Second operand 7 states and 414 transitions. [2023-01-28 05:39:09,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 708 flow [2023-01-28 05:39:09,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 646 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-28 05:39:09,712 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 530 flow [2023-01-28 05:39:09,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-01-28 05:39:09,713 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2023-01-28 05:39:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 530 flow [2023-01-28 05:39:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:09,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:09,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:39:09,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:09,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -232545019, now seen corresponding path program 6 times [2023-01-28 05:39:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:09,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272750721] [2023-01-28 05:39:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272750721] [2023-01-28 05:39:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272750721] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:09,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:09,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157131688] [2023-01-28 05:39:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:09,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:09,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:09,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:09,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:09,948 INFO L130 PetriNetUnfolder]: 126/216 cut-off events. [2023-01-28 05:39:09,948 INFO L131 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2023-01-28 05:39:09,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 216 events. 126/216 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 654 event pairs, 18 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 1088. Up to 130 conditions per place. [2023-01-28 05:39:09,950 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 41 selfloop transitions, 29 changer transitions 5/75 dead transitions. [2023-01-28 05:39:09,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 781 flow [2023-01-28 05:39:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2023-01-28 05:39:09,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042759961127308 [2023-01-28 05:39:09,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2023-01-28 05:39:09,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2023-01-28 05:39:09,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:09,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2023-01-28 05:39:09,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,956 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 530 flow. Second operand 7 states and 416 transitions. [2023-01-28 05:39:09,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 781 flow [2023-01-28 05:39:09,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 741 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 05:39:09,961 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 613 flow [2023-01-28 05:39:09,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-01-28 05:39:09,962 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 42 predicate places. [2023-01-28 05:39:09,962 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 613 flow [2023-01-28 05:39:09,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:09,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:09,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:09,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:39:09,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:09,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:09,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2077625246, now seen corresponding path program 1 times [2023-01-28 05:39:09,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:09,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917396417] [2023-01-28 05:39:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:09,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917396417] [2023-01-28 05:39:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917396417] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191219681] [2023-01-28 05:39:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:10,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:10,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:39:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:10,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:39:10,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:10,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:10,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191219681] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:10,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:39:10,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-01-28 05:39:10,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938026266] [2023-01-28 05:39:10,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:10,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:10,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:10,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:10,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:39:10,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:10,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 613 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:10,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:10,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:10,284 INFO L130 PetriNetUnfolder]: 131/230 cut-off events. [2023-01-28 05:39:10,284 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2023-01-28 05:39:10,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 230 events. 131/230 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 750 event pairs, 10 based on Foata normal form. 8/238 useless extension candidates. Maximal degree in co-relation 1221. Up to 102 conditions per place. [2023-01-28 05:39:10,287 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 62 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2023-01-28 05:39:10,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 891 flow [2023-01-28 05:39:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:39:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:39:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2023-01-28 05:39:10,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-28 05:39:10,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 315 transitions. [2023-01-28 05:39:10,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 315 transitions. [2023-01-28 05:39:10,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:10,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 315 transitions. [2023-01-28 05:39:10,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,291 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 613 flow. Second operand 5 states and 315 transitions. [2023-01-28 05:39:10,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 891 flow [2023-01-28 05:39:10,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 815 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-28 05:39:10,298 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 627 flow [2023-01-28 05:39:10,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-01-28 05:39:10,299 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 43 predicate places. [2023-01-28 05:39:10,299 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 627 flow [2023-01-28 05:39:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:10,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:10,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:10,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:10,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:10,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1451445671, now seen corresponding path program 1 times [2023-01-28 05:39:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:10,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995076262] [2023-01-28 05:39:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:10,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995076262] [2023-01-28 05:39:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995076262] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:10,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:10,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246080351] [2023-01-28 05:39:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:10,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:10,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:10,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:10,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:10,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:10,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:10,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:10,678 INFO L130 PetriNetUnfolder]: 127/226 cut-off events. [2023-01-28 05:39:10,678 INFO L131 PetriNetUnfolder]: For 1366/1366 co-relation queries the response was YES. [2023-01-28 05:39:10,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 226 events. 127/226 cut-off events. For 1366/1366 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 733 event pairs, 16 based on Foata normal form. 4/230 useless extension candidates. Maximal degree in co-relation 1104. Up to 90 conditions per place. [2023-01-28 05:39:10,680 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 49 selfloop transitions, 28 changer transitions 4/81 dead transitions. [2023-01-28 05:39:10,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 873 flow [2023-01-28 05:39:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:10,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 431 transitions. [2023-01-28 05:39:10,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41885325558794945 [2023-01-28 05:39:10,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 431 transitions. [2023-01-28 05:39:10,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 431 transitions. [2023-01-28 05:39:10,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:10,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 431 transitions. [2023-01-28 05:39:10,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.57142857142857) internal successors, (431), 7 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,686 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,686 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 627 flow. Second operand 7 states and 431 transitions. [2023-01-28 05:39:10,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 873 flow [2023-01-28 05:39:10,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 830 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 05:39:10,692 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 639 flow [2023-01-28 05:39:10,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-01-28 05:39:10,693 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2023-01-28 05:39:10,693 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 639 flow [2023-01-28 05:39:10,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:10,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:10,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:39:10,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:10,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1729374333, now seen corresponding path program 2 times [2023-01-28 05:39:10,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520109294] [2023-01-28 05:39:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520109294] [2023-01-28 05:39:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520109294] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:10,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112270752] [2023-01-28 05:39:10,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:10,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:10,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:10,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:10,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:10,837 INFO L130 PetriNetUnfolder]: 133/236 cut-off events. [2023-01-28 05:39:10,838 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2023-01-28 05:39:10,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 236 events. 133/236 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 757 event pairs, 23 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 1261. Up to 133 conditions per place. [2023-01-28 05:39:10,840 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 62 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2023-01-28 05:39:10,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 916 flow [2023-01-28 05:39:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:39:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:39:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2023-01-28 05:39:10,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2023-01-28 05:39:10,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 318 transitions. [2023-01-28 05:39:10,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 318 transitions. [2023-01-28 05:39:10,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:10,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 318 transitions. [2023-01-28 05:39:10,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,845 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,845 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 639 flow. Second operand 5 states and 318 transitions. [2023-01-28 05:39:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 916 flow [2023-01-28 05:39:10,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 837 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-28 05:39:10,853 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 639 flow [2023-01-28 05:39:10,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-01-28 05:39:10,854 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 46 predicate places. [2023-01-28 05:39:10,854 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 639 flow [2023-01-28 05:39:10,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 05:39:10,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:10,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2096697363, now seen corresponding path program 3 times [2023-01-28 05:39:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797036496] [2023-01-28 05:39:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797036496] [2023-01-28 05:39:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797036496] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:10,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:10,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736616885] [2023-01-28 05:39:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:10,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:10,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:10,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:10,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:10,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:11,015 INFO L130 PetriNetUnfolder]: 128/231 cut-off events. [2023-01-28 05:39:11,015 INFO L131 PetriNetUnfolder]: For 1179/1179 co-relation queries the response was YES. [2023-01-28 05:39:11,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 231 events. 128/231 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 749 event pairs, 16 based on Foata normal form. 4/235 useless extension candidates. Maximal degree in co-relation 1179. Up to 92 conditions per place. [2023-01-28 05:39:11,018 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 58 selfloop transitions, 28 changer transitions 3/89 dead transitions. [2023-01-28 05:39:11,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 942 flow [2023-01-28 05:39:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 05:39:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 05:39:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 495 transitions. [2023-01-28 05:39:11,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42091836734693877 [2023-01-28 05:39:11,020 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 495 transitions. [2023-01-28 05:39:11,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 495 transitions. [2023-01-28 05:39:11,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:11,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 495 transitions. [2023-01-28 05:39:11,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.875) internal successors, (495), 8 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,024 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,024 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 639 flow. Second operand 8 states and 495 transitions. [2023-01-28 05:39:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 942 flow [2023-01-28 05:39:11,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 908 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 05:39:11,030 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 676 flow [2023-01-28 05:39:11,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=676, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-01-28 05:39:11,031 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 51 predicate places. [2023-01-28 05:39:11,031 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 676 flow [2023-01-28 05:39:11,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:11,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:11,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 05:39:11,032 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:11,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1833085128, now seen corresponding path program 2 times [2023-01-28 05:39:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16670161] [2023-01-28 05:39:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16670161] [2023-01-28 05:39:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16670161] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:11,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227576289] [2023-01-28 05:39:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:11,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:11,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:11,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 676 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:11,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:11,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:11,175 INFO L130 PetriNetUnfolder]: 145/268 cut-off events. [2023-01-28 05:39:11,176 INFO L131 PetriNetUnfolder]: For 1492/1492 co-relation queries the response was YES. [2023-01-28 05:39:11,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 268 events. 145/268 cut-off events. For 1492/1492 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 935 event pairs, 10 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 1445. Up to 103 conditions per place. [2023-01-28 05:39:11,178 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 56 selfloop transitions, 26 changer transitions 1/83 dead transitions. [2023-01-28 05:39:11,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 989 flow [2023-01-28 05:39:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:39:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:39:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2023-01-28 05:39:11,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2023-01-28 05:39:11,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 371 transitions. [2023-01-28 05:39:11,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 371 transitions. [2023-01-28 05:39:11,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:11,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 371 transitions. [2023-01-28 05:39:11,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,183 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 676 flow. Second operand 6 states and 371 transitions. [2023-01-28 05:39:11,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 989 flow [2023-01-28 05:39:11,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 931 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 05:39:11,190 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 767 flow [2023-01-28 05:39:11,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-01-28 05:39:11,191 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-01-28 05:39:11,191 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 767 flow [2023-01-28 05:39:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:11,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 05:39:11,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:11,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1631307914, now seen corresponding path program 3 times [2023-01-28 05:39:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:11,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352968625] [2023-01-28 05:39:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352968625] [2023-01-28 05:39:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352968625] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904168046] [2023-01-28 05:39:11,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:39:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:11,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:11,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:39:11,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:39:11,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:11,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:39:11,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904168046] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:11,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:39:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-01-28 05:39:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409276363] [2023-01-28 05:39:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:11,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:11,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:11,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:11,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:11,423 INFO L130 PetriNetUnfolder]: 150/281 cut-off events. [2023-01-28 05:39:11,424 INFO L131 PetriNetUnfolder]: For 1865/1865 co-relation queries the response was YES. [2023-01-28 05:39:11,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 281 events. 150/281 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1012 event pairs, 6 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 1535. Up to 163 conditions per place. [2023-01-28 05:39:11,426 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 54 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2023-01-28 05:39:11,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 1014 flow [2023-01-28 05:39:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:39:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:39:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2023-01-28 05:39:11,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-28 05:39:11,428 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 315 transitions. [2023-01-28 05:39:11,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 315 transitions. [2023-01-28 05:39:11,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:11,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 315 transitions. [2023-01-28 05:39:11,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,430 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 767 flow. Second operand 5 states and 315 transitions. [2023-01-28 05:39:11,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 1014 flow [2023-01-28 05:39:11,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 945 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-28 05:39:11,437 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 819 flow [2023-01-28 05:39:11,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-01-28 05:39:11,438 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2023-01-28 05:39:11,438 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 819 flow [2023-01-28 05:39:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:11,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:11,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:11,644 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 [2023-01-28 05:39:11,644 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:11,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 199479147, now seen corresponding path program 4 times [2023-01-28 05:39:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:11,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52010563] [2023-01-28 05:39:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52010563] [2023-01-28 05:39:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52010563] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488659845] [2023-01-28 05:39:11,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:39:11,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:11,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:11,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:11,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:39:11,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:39:11,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:11,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:39:11,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:11,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488659845] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:11,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:39:11,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-01-28 05:39:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847059399] [2023-01-28 05:39:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:11,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:39:11,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:11,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 819 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:11,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:11,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:11,874 INFO L130 PetriNetUnfolder]: 159/310 cut-off events. [2023-01-28 05:39:11,874 INFO L131 PetriNetUnfolder]: For 2376/2376 co-relation queries the response was YES. [2023-01-28 05:39:11,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 310 events. 159/310 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1194 event pairs, 10 based on Foata normal form. 6/316 useless extension candidates. Maximal degree in co-relation 1720. Up to 160 conditions per place. [2023-01-28 05:39:11,877 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 63 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2023-01-28 05:39:11,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 1111 flow [2023-01-28 05:39:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:39:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:39:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 311 transitions. [2023-01-28 05:39:11,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231292517006803 [2023-01-28 05:39:11,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 311 transitions. [2023-01-28 05:39:11,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 311 transitions. [2023-01-28 05:39:11,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:11,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 311 transitions. [2023-01-28 05:39:11,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,881 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 819 flow. Second operand 5 states and 311 transitions. [2023-01-28 05:39:11,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 1111 flow [2023-01-28 05:39:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 1098 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 05:39:11,892 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 906 flow [2023-01-28 05:39:11,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=906, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2023-01-28 05:39:11,893 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 61 predicate places. [2023-01-28 05:39:11,894 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 906 flow [2023-01-28 05:39:11,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:11,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:11,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:11,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:12,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:12,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1851774549, now seen corresponding path program 5 times [2023-01-28 05:39:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399139480] [2023-01-28 05:39:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:12,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399139480] [2023-01-28 05:39:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399139480] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:12,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090985762] [2023-01-28 05:39:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:12,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:12,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:12,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 906 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:12,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:12,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:12,221 INFO L130 PetriNetUnfolder]: 145/286 cut-off events. [2023-01-28 05:39:12,221 INFO L131 PetriNetUnfolder]: For 2486/2486 co-relation queries the response was YES. [2023-01-28 05:39:12,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 286 events. 145/286 cut-off events. For 2486/2486 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1079 event pairs, 10 based on Foata normal form. 8/294 useless extension candidates. Maximal degree in co-relation 1686. Up to 115 conditions per place. [2023-01-28 05:39:12,223 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 60 selfloop transitions, 25 changer transitions 1/86 dead transitions. [2023-01-28 05:39:12,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 1172 flow [2023-01-28 05:39:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:39:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:39:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2023-01-28 05:39:12,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2023-01-28 05:39:12,225 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 371 transitions. [2023-01-28 05:39:12,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 371 transitions. [2023-01-28 05:39:12,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:12,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 371 transitions. [2023-01-28 05:39:12,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,228 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 906 flow. Second operand 6 states and 371 transitions. [2023-01-28 05:39:12,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 86 transitions, 1172 flow [2023-01-28 05:39:12,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 1128 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 05:39:12,236 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 915 flow [2023-01-28 05:39:12,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=915, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-01-28 05:39:12,237 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 64 predicate places. [2023-01-28 05:39:12,237 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 915 flow [2023-01-28 05:39:12,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:12,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:12,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 05:39:12,238 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:12,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1933318608, now seen corresponding path program 4 times [2023-01-28 05:39:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:12,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740864955] [2023-01-28 05:39:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740864955] [2023-01-28 05:39:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740864955] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868458224] [2023-01-28 05:39:12,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:39:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:12,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:12,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:12,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:39:12,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:39:12,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:12,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:39:12,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:12,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868458224] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:39:12,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-01-28 05:39:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170950876] [2023-01-28 05:39:12,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:12,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:39:12,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:12,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 915 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:12,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:12,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:12,471 INFO L130 PetriNetUnfolder]: 139/272 cut-off events. [2023-01-28 05:39:12,472 INFO L131 PetriNetUnfolder]: For 2565/2565 co-relation queries the response was YES. [2023-01-28 05:39:12,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 272 events. 139/272 cut-off events. For 2565/2565 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 998 event pairs, 23 based on Foata normal form. 6/278 useless extension candidates. Maximal degree in co-relation 1618. Up to 145 conditions per place. [2023-01-28 05:39:12,474 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 58 selfloop transitions, 31 changer transitions 0/89 dead transitions. [2023-01-28 05:39:12,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 1175 flow [2023-01-28 05:39:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:39:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:39:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2023-01-28 05:39:12,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-28 05:39:12,476 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 378 transitions. [2023-01-28 05:39:12,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 378 transitions. [2023-01-28 05:39:12,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:12,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 378 transitions. [2023-01-28 05:39:12,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,479 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,479 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 915 flow. Second operand 6 states and 378 transitions. [2023-01-28 05:39:12,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 1175 flow [2023-01-28 05:39:12,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 1152 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 05:39:12,487 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 967 flow [2023-01-28 05:39:12,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=967, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2023-01-28 05:39:12,488 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 66 predicate places. [2023-01-28 05:39:12,488 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 967 flow [2023-01-28 05:39:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:12,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:12,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:12,693 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,SelfDestructingSolverStorable14 [2023-01-28 05:39:12,694 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:12,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:12,694 INFO L85 PathProgramCache]: Analyzing trace with hash 58117330, now seen corresponding path program 5 times [2023-01-28 05:39:12,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:12,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563520429] [2023-01-28 05:39:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:12,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563520429] [2023-01-28 05:39:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563520429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:12,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:12,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:12,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101773671] [2023-01-28 05:39:12,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:12,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:12,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:12,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:12,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 967 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:12,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:12,822 INFO L130 PetriNetUnfolder]: 137/270 cut-off events. [2023-01-28 05:39:12,822 INFO L131 PetriNetUnfolder]: For 2647/2647 co-relation queries the response was YES. [2023-01-28 05:39:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 270 events. 137/270 cut-off events. For 2647/2647 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 994 event pairs, 27 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 1721. Up to 101 conditions per place. [2023-01-28 05:39:12,825 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 54 selfloop transitions, 27 changer transitions 2/83 dead transitions. [2023-01-28 05:39:12,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 1184 flow [2023-01-28 05:39:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 426 transitions. [2023-01-28 05:39:12,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139941690962099 [2023-01-28 05:39:12,827 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 426 transitions. [2023-01-28 05:39:12,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 426 transitions. [2023-01-28 05:39:12,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:12,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 426 transitions. [2023-01-28 05:39:12,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,830 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 967 flow. Second operand 7 states and 426 transitions. [2023-01-28 05:39:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 1184 flow [2023-01-28 05:39:12,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 1138 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 05:39:12,839 INFO L231 Difference]: Finished difference. Result has 90 places, 66 transitions, 932 flow [2023-01-28 05:39:12,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=932, PETRI_PLACES=90, PETRI_TRANSITIONS=66} [2023-01-28 05:39:12,840 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2023-01-28 05:39:12,840 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 66 transitions, 932 flow [2023-01-28 05:39:12,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:12,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:12,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 05:39:12,841 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:12,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1486589744, now seen corresponding path program 6 times [2023-01-28 05:39:12,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:12,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131208970] [2023-01-28 05:39:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:12,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:12,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131208970] [2023-01-28 05:39:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131208970] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:12,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:12,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735826490] [2023-01-28 05:39:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:12,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:12,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:12,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:12,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:12,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 66 transitions, 932 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:12,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:12,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:12,982 INFO L130 PetriNetUnfolder]: 131/252 cut-off events. [2023-01-28 05:39:12,982 INFO L131 PetriNetUnfolder]: For 2667/2667 co-relation queries the response was YES. [2023-01-28 05:39:12,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 252 events. 131/252 cut-off events. For 2667/2667 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 891 event pairs, 23 based on Foata normal form. 2/254 useless extension candidates. Maximal degree in co-relation 1659. Up to 101 conditions per place. [2023-01-28 05:39:12,985 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 55 selfloop transitions, 27 changer transitions 1/83 dead transitions. [2023-01-28 05:39:12,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 1156 flow [2023-01-28 05:39:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 05:39:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 05:39:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 487 transitions. [2023-01-28 05:39:12,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141156462585034 [2023-01-28 05:39:12,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 487 transitions. [2023-01-28 05:39:12,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 487 transitions. [2023-01-28 05:39:12,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:12,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 487 transitions. [2023-01-28 05:39:12,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.875) internal successors, (487), 8 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,990 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:12,990 INFO L175 Difference]: Start difference. First operand has 90 places, 66 transitions, 932 flow. Second operand 8 states and 487 transitions. [2023-01-28 05:39:12,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 1156 flow [2023-01-28 05:39:12,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 83 transitions, 1106 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-28 05:39:12,999 INFO L231 Difference]: Finished difference. Result has 92 places, 63 transitions, 888 flow [2023-01-28 05:39:12,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=92, PETRI_TRANSITIONS=63} [2023-01-28 05:39:13,000 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 72 predicate places. [2023-01-28 05:39:13,000 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 63 transitions, 888 flow [2023-01-28 05:39:13,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:13,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:13,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 05:39:13,002 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:13,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1093501371, now seen corresponding path program 6 times [2023-01-28 05:39:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647555503] [2023-01-28 05:39:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:13,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:13,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647555503] [2023-01-28 05:39:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647555503] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:39:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:39:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964250862] [2023-01-28 05:39:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:39:13,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:39:13,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:39:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-28 05:39:13,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 63 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:13,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-28 05:39:13,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:13,113 INFO L130 PetriNetUnfolder]: 125/236 cut-off events. [2023-01-28 05:39:13,113 INFO L131 PetriNetUnfolder]: For 2604/2604 co-relation queries the response was YES. [2023-01-28 05:39:13,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 236 events. 125/236 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 783 event pairs, 10 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 1461. Up to 173 conditions per place. [2023-01-28 05:39:13,116 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 50 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-01-28 05:39:13,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 68 transitions, 1010 flow [2023-01-28 05:39:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:39:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:39:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2023-01-28 05:39:13,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2023-01-28 05:39:13,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2023-01-28 05:39:13,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2023-01-28 05:39:13,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:13,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2023-01-28 05:39:13,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,121 INFO L175 Difference]: Start difference. First operand has 92 places, 63 transitions, 888 flow. Second operand 5 states and 305 transitions. [2023-01-28 05:39:13,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 68 transitions, 1010 flow [2023-01-28 05:39:13,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 68 transitions, 950 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-01-28 05:39:13,128 INFO L231 Difference]: Finished difference. Result has 85 places, 61 transitions, 815 flow [2023-01-28 05:39:13,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2023-01-28 05:39:13,129 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2023-01-28 05:39:13,130 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 815 flow [2023-01-28 05:39:13,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:13,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:13,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 05:39:13,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:13,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:13,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1299106536, now seen corresponding path program 1 times [2023-01-28 05:39:13,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:13,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956157791] [2023-01-28 05:39:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:13,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956157791] [2023-01-28 05:39:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956157791] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115667064] [2023-01-28 05:39:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:13,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:13,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:13,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:39:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:13,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:13,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:13,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:13,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115667064] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:13,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 05:39:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487611246] [2023-01-28 05:39:13,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:13,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 05:39:13,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 05:39:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-01-28 05:39:13,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:13,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 815 flow. Second operand has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:13,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:13,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:13,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:14,158 INFO L130 PetriNetUnfolder]: 125/235 cut-off events. [2023-01-28 05:39:14,158 INFO L131 PetriNetUnfolder]: For 2124/2124 co-relation queries the response was YES. [2023-01-28 05:39:14,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 235 events. 125/235 cut-off events. For 2124/2124 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 793 event pairs, 2 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 1359. Up to 51 conditions per place. [2023-01-28 05:39:14,160 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 42 selfloop transitions, 22 changer transitions 27/91 dead transitions. [2023-01-28 05:39:14,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 1145 flow [2023-01-28 05:39:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:39:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:39:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 642 transitions. [2023-01-28 05:39:14,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970315398886827 [2023-01-28 05:39:14,162 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 642 transitions. [2023-01-28 05:39:14,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 642 transitions. [2023-01-28 05:39:14,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:14,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 642 transitions. [2023-01-28 05:39:14,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.36363636363637) internal successors, (642), 11 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:14,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:14,166 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:14,166 INFO L175 Difference]: Start difference. First operand has 85 places, 61 transitions, 815 flow. Second operand 11 states and 642 transitions. [2023-01-28 05:39:14,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 1145 flow [2023-01-28 05:39:14,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 1120 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 05:39:14,174 INFO L231 Difference]: Finished difference. Result has 94 places, 48 transitions, 666 flow [2023-01-28 05:39:14,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=666, PETRI_PLACES=94, PETRI_TRANSITIONS=48} [2023-01-28 05:39:14,174 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 74 predicate places. [2023-01-28 05:39:14,174 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 48 transitions, 666 flow [2023-01-28 05:39:14,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:14,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:14,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:14,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:14,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:14,381 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:14,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1701107400, now seen corresponding path program 2 times [2023-01-28 05:39:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:14,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032888860] [2023-01-28 05:39:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032888860] [2023-01-28 05:39:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032888860] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005144622] [2023-01-28 05:39:14,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:39:14,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:14,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:14,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:14,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:39:14,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:39:14,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:14,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:14,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:14,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:15,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005144622] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:15,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:15,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-01-28 05:39:15,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511089989] [2023-01-28 05:39:15,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:15,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:39:15,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:39:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:39:15,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 147 [2023-01-28 05:39:15,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 48 transitions, 666 flow. Second operand has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:15,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:15,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 147 [2023-01-28 05:39:15,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:15,339 INFO L130 PetriNetUnfolder]: 96/188 cut-off events. [2023-01-28 05:39:15,339 INFO L131 PetriNetUnfolder]: For 1913/1913 co-relation queries the response was YES. [2023-01-28 05:39:15,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 188 events. 96/188 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 580 event pairs, 2 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 1258. Up to 46 conditions per place. [2023-01-28 05:39:15,341 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 46 selfloop transitions, 27 changer transitions 9/82 dead transitions. [2023-01-28 05:39:15,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 82 transitions, 1049 flow [2023-01-28 05:39:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:39:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:39:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 586 transitions. [2023-01-28 05:39:15,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3623995052566481 [2023-01-28 05:39:15,346 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 586 transitions. [2023-01-28 05:39:15,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 586 transitions. [2023-01-28 05:39:15,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:15,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 586 transitions. [2023-01-28 05:39:15,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 53.27272727272727) internal successors, (586), 11 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:15,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:15,350 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:15,350 INFO L175 Difference]: Start difference. First operand has 94 places, 48 transitions, 666 flow. Second operand 11 states and 586 transitions. [2023-01-28 05:39:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 82 transitions, 1049 flow [2023-01-28 05:39:15,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 82 transitions, 837 flow, removed 15 selfloop flow, removed 20 redundant places. [2023-01-28 05:39:15,356 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 593 flow [2023-01-28 05:39:15,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=593, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-01-28 05:39:15,357 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 59 predicate places. [2023-01-28 05:39:15,357 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 593 flow [2023-01-28 05:39:15,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:15,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:15,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:15,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:15,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:15,563 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:15,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1717886460, now seen corresponding path program 3 times [2023-01-28 05:39:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:15,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870085893] [2023-01-28 05:39:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:15,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870085893] [2023-01-28 05:39:15,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870085893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465282040] [2023-01-28 05:39:15,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:39:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:15,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:15,683 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:15,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 05:39:15,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 05:39:15,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:15,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:15,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:15,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465282040] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:16,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 05:39:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199794445] [2023-01-28 05:39:16,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:16,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 05:39:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 05:39:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-28 05:39:16,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:16,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions, 593 flow. Second operand has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:16,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:16,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:16,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:16,353 INFO L130 PetriNetUnfolder]: 90/183 cut-off events. [2023-01-28 05:39:16,353 INFO L131 PetriNetUnfolder]: For 1103/1103 co-relation queries the response was YES. [2023-01-28 05:39:16,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 183 events. 90/183 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 572 event pairs, 2 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 1079. Up to 45 conditions per place. [2023-01-28 05:39:16,354 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 34 selfloop transitions, 16 changer transitions 26/76 dead transitions. [2023-01-28 05:39:16,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 870 flow [2023-01-28 05:39:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:39:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:39:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 635 transitions. [2023-01-28 05:39:16,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39270253555967843 [2023-01-28 05:39:16,356 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 635 transitions. [2023-01-28 05:39:16,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 635 transitions. [2023-01-28 05:39:16,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:16,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 635 transitions. [2023-01-28 05:39:16,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.72727272727273) internal successors, (635), 11 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:16,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:16,359 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:16,359 INFO L175 Difference]: Start difference. First operand has 79 places, 51 transitions, 593 flow. Second operand 11 states and 635 transitions. [2023-01-28 05:39:16,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 76 transitions, 870 flow [2023-01-28 05:39:16,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 793 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-01-28 05:39:16,365 INFO L231 Difference]: Finished difference. Result has 80 places, 39 transitions, 422 flow [2023-01-28 05:39:16,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=422, PETRI_PLACES=80, PETRI_TRANSITIONS=39} [2023-01-28 05:39:16,365 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2023-01-28 05:39:16,365 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 39 transitions, 422 flow [2023-01-28 05:39:16,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:16,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:16,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:16,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:16,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:16,567 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:16,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1577916472, now seen corresponding path program 4 times [2023-01-28 05:39:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:16,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673686475] [2023-01-28 05:39:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:16,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:16,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:16,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673686475] [2023-01-28 05:39:16,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673686475] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:16,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241757768] [2023-01-28 05:39:16,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:39:16,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:16,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:16,694 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:16,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 05:39:16,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:39:16,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:16,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:16,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:16,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:17,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241757768] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:17,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:17,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 05:39:17,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832427034] [2023-01-28 05:39:17,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:17,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 05:39:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:17,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 05:39:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-28 05:39:17,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:17,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 39 transitions, 422 flow. Second operand has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:17,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:17,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:17,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:17,683 INFO L130 PetriNetUnfolder]: 81/179 cut-off events. [2023-01-28 05:39:17,683 INFO L131 PetriNetUnfolder]: For 977/977 co-relation queries the response was YES. [2023-01-28 05:39:17,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 179 events. 81/179 cut-off events. For 977/977 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 589 event pairs, 1 based on Foata normal form. 3/182 useless extension candidates. Maximal degree in co-relation 998. Up to 41 conditions per place. [2023-01-28 05:39:17,685 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 38 selfloop transitions, 28 changer transitions 18/84 dead transitions. [2023-01-28 05:39:17,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 899 flow [2023-01-28 05:39:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 05:39:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 05:39:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 974 transitions. [2023-01-28 05:39:17,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897559023609444 [2023-01-28 05:39:17,687 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 974 transitions. [2023-01-28 05:39:17,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 974 transitions. [2023-01-28 05:39:17,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:17,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 974 transitions. [2023-01-28 05:39:17,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 57.294117647058826) internal successors, (974), 17 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:17,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:17,691 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:17,691 INFO L175 Difference]: Start difference. First operand has 80 places, 39 transitions, 422 flow. Second operand 17 states and 974 transitions. [2023-01-28 05:39:17,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 899 flow [2023-01-28 05:39:17,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 795 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-01-28 05:39:17,696 INFO L231 Difference]: Finished difference. Result has 82 places, 48 transitions, 535 flow [2023-01-28 05:39:17,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=535, PETRI_PLACES=82, PETRI_TRANSITIONS=48} [2023-01-28 05:39:17,696 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2023-01-28 05:39:17,697 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 48 transitions, 535 flow [2023-01-28 05:39:17,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:17,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:17,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:17,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:17,897 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,SelfDestructingSolverStorable21 [2023-01-28 05:39:17,898 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:17,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1858770940, now seen corresponding path program 5 times [2023-01-28 05:39:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348975635] [2023-01-28 05:39:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:18,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:18,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348975635] [2023-01-28 05:39:18,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348975635] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:18,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146248909] [2023-01-28 05:39:18,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 05:39:18,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:18,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:18,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:18,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 05:39:18,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:39:18,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:18,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 05:39:18,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:18,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:39:18,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146248909] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:39:18,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:39:18,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-01-28 05:39:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607932436] [2023-01-28 05:39:18,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:39:18,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:39:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:39:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-28 05:39:18,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 147 [2023-01-28 05:39:18,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 48 transitions, 535 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:18,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:18,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 147 [2023-01-28 05:39:18,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:18,284 INFO L130 PetriNetUnfolder]: 72/142 cut-off events. [2023-01-28 05:39:18,284 INFO L131 PetriNetUnfolder]: For 834/834 co-relation queries the response was YES. [2023-01-28 05:39:18,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 142 events. 72/142 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 391 event pairs, 8 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 834. Up to 45 conditions per place. [2023-01-28 05:39:18,286 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 28 selfloop transitions, 9 changer transitions 21/58 dead transitions. [2023-01-28 05:39:18,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 58 transitions, 698 flow [2023-01-28 05:39:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:39:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:39:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2023-01-28 05:39:18,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41205053449951407 [2023-01-28 05:39:18,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2023-01-28 05:39:18,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2023-01-28 05:39:18,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:18,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2023-01-28 05:39:18,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:18,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:18,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:18,289 INFO L175 Difference]: Start difference. First operand has 82 places, 48 transitions, 535 flow. Second operand 7 states and 424 transitions. [2023-01-28 05:39:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 58 transitions, 698 flow [2023-01-28 05:39:18,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 589 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-01-28 05:39:18,293 INFO L231 Difference]: Finished difference. Result has 75 places, 34 transitions, 313 flow [2023-01-28 05:39:18,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=75, PETRI_TRANSITIONS=34} [2023-01-28 05:39:18,294 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-01-28 05:39:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 34 transitions, 313 flow [2023-01-28 05:39:18,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:18,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:18,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:18,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:18,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:18,502 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:18,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2082091444, now seen corresponding path program 6 times [2023-01-28 05:39:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:18,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107100740] [2023-01-28 05:39:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:18,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:18,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107100740] [2023-01-28 05:39:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107100740] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810598232] [2023-01-28 05:39:18,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:39:18,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:18,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:18,621 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:18,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 05:39:18,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 05:39:18,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:18,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:18,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:18,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:19,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810598232] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:19,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:19,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 05:39:19,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614712163] [2023-01-28 05:39:19,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:19,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 05:39:19,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:19,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 05:39:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-28 05:39:19,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:19,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 34 transitions, 313 flow. Second operand has 19 states, 19 states have (on average 54.73684210526316) internal successors, (1040), 19 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:19,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:19,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:19,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:19,757 INFO L130 PetriNetUnfolder]: 54/123 cut-off events. [2023-01-28 05:39:19,757 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-01-28 05:39:19,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 123 events. 54/123 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 1 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 621. Up to 23 conditions per place. [2023-01-28 05:39:19,758 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 24 selfloop transitions, 17 changer transitions 28/69 dead transitions. [2023-01-28 05:39:19,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 589 flow [2023-01-28 05:39:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 05:39:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 05:39:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 967 transitions. [2023-01-28 05:39:19,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869547819127651 [2023-01-28 05:39:19,762 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 967 transitions. [2023-01-28 05:39:19,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 967 transitions. [2023-01-28 05:39:19,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:19,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 967 transitions. [2023-01-28 05:39:19,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 56.88235294117647) internal successors, (967), 17 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:19,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:19,766 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:19,766 INFO L175 Difference]: Start difference. First operand has 75 places, 34 transitions, 313 flow. Second operand 17 states and 967 transitions. [2023-01-28 05:39:19,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 589 flow [2023-01-28 05:39:19,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 514 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-01-28 05:39:19,770 INFO L231 Difference]: Finished difference. Result has 74 places, 30 transitions, 249 flow [2023-01-28 05:39:19,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=249, PETRI_PLACES=74, PETRI_TRANSITIONS=30} [2023-01-28 05:39:19,770 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 54 predicate places. [2023-01-28 05:39:19,770 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 30 transitions, 249 flow [2023-01-28 05:39:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.73684210526316) internal successors, (1040), 19 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:19,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:19,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:19,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:19,975 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,SelfDestructingSolverStorable23 [2023-01-28 05:39:19,976 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:19,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash -669051972, now seen corresponding path program 7 times [2023-01-28 05:39:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910438269] [2023-01-28 05:39:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:19,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:20,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910438269] [2023-01-28 05:39:20,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910438269] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779897933] [2023-01-28 05:39:20,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 05:39:20,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:20,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:20,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 05:39:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:20,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:20,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:20,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779897933] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:20,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:20,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 05:39:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359763799] [2023-01-28 05:39:20,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 05:39:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 05:39:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-01-28 05:39:20,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-28 05:39:20,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 30 transitions, 249 flow. Second operand has 18 states, 18 states have (on average 54.44444444444444) internal successors, (980), 18 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:20,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:20,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-28 05:39:20,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:20,614 INFO L130 PetriNetUnfolder]: 36/84 cut-off events. [2023-01-28 05:39:20,615 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-01-28 05:39:20,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 84 events. 36/84 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 3 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 403. Up to 21 conditions per place. [2023-01-28 05:39:20,615 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 24 selfloop transitions, 13 changer transitions 7/44 dead transitions. [2023-01-28 05:39:20,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 44 transitions, 378 flow [2023-01-28 05:39:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:39:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:39:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2023-01-28 05:39:20,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.383426097711812 [2023-01-28 05:39:20,617 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 620 transitions. [2023-01-28 05:39:20,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 620 transitions. [2023-01-28 05:39:20,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:20,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 620 transitions. [2023-01-28 05:39:20,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.36363636363637) internal successors, (620), 11 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:20,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:20,620 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:20,620 INFO L175 Difference]: Start difference. First operand has 74 places, 30 transitions, 249 flow. Second operand 11 states and 620 transitions. [2023-01-28 05:39:20,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 44 transitions, 378 flow [2023-01-28 05:39:20,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 44 transitions, 336 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-01-28 05:39:20,622 INFO L231 Difference]: Finished difference. Result has 63 places, 28 transitions, 215 flow [2023-01-28 05:39:20,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=215, PETRI_PLACES=63, PETRI_TRANSITIONS=28} [2023-01-28 05:39:20,623 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 43 predicate places. [2023-01-28 05:39:20,623 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 28 transitions, 215 flow [2023-01-28 05:39:20,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.44444444444444) internal successors, (980), 18 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:20,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:39:20,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:39:20,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:20,840 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,SelfDestructingSolverStorable24 [2023-01-28 05:39:20,841 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:39:20,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:39:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -685831032, now seen corresponding path program 8 times [2023-01-28 05:39:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:39:20,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537107952] [2023-01-28 05:39:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:39:20,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:39:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:39:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:39:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537107952] [2023-01-28 05:39:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537107952] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:39:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530761211] [2023-01-28 05:39:21,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:39:21,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:39:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:39:21,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:39:21,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 05:39:21,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:39:21,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:39:21,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 05:39:21,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:39:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:21,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:39:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:39:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530761211] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:39:21,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:39:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-01-28 05:39:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515071089] [2023-01-28 05:39:21,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:39:21,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:39:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:39:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:39:21,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:39:21,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 147 [2023-01-28 05:39:21,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 28 transitions, 215 flow. Second operand has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:21,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:39:21,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 147 [2023-01-28 05:39:21,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:39:21,677 INFO L130 PetriNetUnfolder]: 34/74 cut-off events. [2023-01-28 05:39:21,678 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2023-01-28 05:39:21,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 74 events. 34/74 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 3 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 345. Up to 21 conditions per place. [2023-01-28 05:39:21,678 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-01-28 05:39:21,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 36 transitions, 312 flow [2023-01-28 05:39:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 05:39:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 05:39:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 461 transitions. [2023-01-28 05:39:21,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34845049130763417 [2023-01-28 05:39:21,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 461 transitions. [2023-01-28 05:39:21,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 461 transitions. [2023-01-28 05:39:21,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:39:21,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 461 transitions. [2023-01-28 05:39:21,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.22222222222222) internal successors, (461), 9 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:21,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 147.0) internal successors, (1470), 10 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:21,682 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 147.0) internal successors, (1470), 10 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:21,682 INFO L175 Difference]: Start difference. First operand has 63 places, 28 transitions, 215 flow. Second operand 9 states and 461 transitions. [2023-01-28 05:39:21,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 36 transitions, 312 flow [2023-01-28 05:39:21,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 36 transitions, 285 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-28 05:39:21,685 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-01-28 05:39:21,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=59, PETRI_TRANSITIONS=0} [2023-01-28 05:39:21,686 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places. [2023-01-28 05:39:21,686 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-01-28 05:39:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:39:21,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 05:39:21,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 05:39:21,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 05:39:21,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 05:39:21,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 05:39:21,890 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 6] [2023-01-28 05:39:21,892 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:39:21,892 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:39:21,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:39:21 BasicIcfg [2023-01-28 05:39:21,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:39:21,895 INFO L158 Benchmark]: Toolchain (without parser) took 16942.22ms. Allocated memory was 331.4MB in the beginning and 492.8MB in the end (delta: 161.5MB). Free memory was 275.0MB in the beginning and 298.5MB in the end (delta: -23.5MB). Peak memory consumption was 139.7MB. Max. memory is 16.0GB. [2023-01-28 05:39:21,895 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 331.4MB. Free memory is still 277.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:39:21,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.65ms. Allocated memory is still 331.4MB. Free memory was 274.7MB in the beginning and 264.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 05:39:21,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.99ms. Allocated memory is still 331.4MB. Free memory was 264.2MB in the beginning and 262.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:39:21,896 INFO L158 Benchmark]: Boogie Preprocessor took 23.00ms. Allocated memory is still 331.4MB. Free memory was 262.7MB in the beginning and 261.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:39:21,896 INFO L158 Benchmark]: RCFGBuilder took 341.22ms. Allocated memory is still 331.4MB. Free memory was 261.4MB in the beginning and 249.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 05:39:21,896 INFO L158 Benchmark]: TraceAbstraction took 16339.74ms. Allocated memory was 331.4MB in the beginning and 492.8MB in the end (delta: 161.5MB). Free memory was 248.5MB in the beginning and 298.5MB in the end (delta: -50.0MB). Peak memory consumption was 112.4MB. Max. memory is 16.0GB. [2023-01-28 05:39:21,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 331.4MB. Free memory is still 277.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 196.65ms. Allocated memory is still 331.4MB. Free memory was 274.7MB in the beginning and 264.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.99ms. Allocated memory is still 331.4MB. Free memory was 264.2MB in the beginning and 262.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.00ms. Allocated memory is still 331.4MB. Free memory was 262.7MB in the beginning and 261.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 341.22ms. Allocated memory is still 331.4MB. Free memory was 261.4MB in the beginning and 249.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 16339.74ms. Allocated memory was 331.4MB in the beginning and 492.8MB in the end (delta: 161.5MB). Free memory was 248.5MB in the beginning and 298.5MB in the end (delta: -50.0MB). Peak memory consumption was 112.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 72 PlacesBefore, 20 PlacesAfterwards, 71 TransitionsBefore, 15 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 581 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 552, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 305, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 552, independent: 237, independent conditional: 0, independent unconditional: 237, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 305, unknown conditional: 0, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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, 98 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: 16.2s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 764 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 764 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4423 IncrementalHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 0 mSDtfsCounter, 4423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 581 GetRequests, 253 SyntacticMatches, 34 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=967occurred in iteration=15, InterpolantAutomatonStates: 209, 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, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 542 NumberOfCodeBlocks, 542 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 4322 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1428 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 49 InterpolantComputations, 19 PerfectInterpolantSequences, 14/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 05:39:21,911 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...