/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:04:31,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:04:31,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:04:31,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 05:04:31,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:04:31,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:04:31,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:04:31,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:04:31,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:04:31,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:04:31,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:04:31,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:04:31,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:04:31,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:04:31,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:04:31,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:04:31,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 05:04:31,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:04:31,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:04:31,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:04:31,237 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 05:04:31,260 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:04:31,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:04:31,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:04:31,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:04:31,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:04:31,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:04:31,263 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:04:31,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:04:31,263 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:04:31,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:04:31,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:04:31,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:04:31,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:04:31,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:04:31,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:04:31,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:04:31,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:04:31,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:04:31,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:04:31,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:04:31,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:04:31,427 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:04:31,427 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:04:31,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-01-28 05:04:32,393 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:04:32,604 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:04:32,605 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-01-28 05:04:32,611 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9f430da/9584911c09ec44099003cab32a03ebfb/FLAG36cc223f2 [2023-01-28 05:04:32,997 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9f430da/9584911c09ec44099003cab32a03ebfb [2023-01-28 05:04:33,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:04:33,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:04:33,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:04:33,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:04:33,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:04:33,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:04:32" (1/1) ... [2023-01-28 05:04:33,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b684a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33, skipping insertion in model container [2023-01-28 05:04:33,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:04:32" (1/1) ... [2023-01-28 05:04:33,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:04:33,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:04:33,116 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2023-01-28 05:04:33,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:04:33,128 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:04:33,141 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2023-01-28 05:04:33,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:04:33,147 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:04:33,147 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:04:33,155 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:04:33,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33 WrapperNode [2023-01-28 05:04:33,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:04:33,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:04:33,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:04:33,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:04:33,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,176 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-01-28 05:04:33,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:04:33,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:04:33,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:04:33,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:04:33,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:04:33,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:04:33,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:04:33,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:04:33,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (1/1) ... [2023-01-28 05:04:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:04:33,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:33,231 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 05:04:33,256 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 05:04:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:04:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:04:33,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:04:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:04:33,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:04:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:04:33,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:04:33,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:04:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:04:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:04:33,270 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 05:04:33,367 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:04:33,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:04:33,612 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:04:33,672 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:04:33,672 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 05:04:33,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:04:33 BoogieIcfgContainer [2023-01-28 05:04:33,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:04:33,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:04:33,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:04:33,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:04:33,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:04:32" (1/3) ... [2023-01-28 05:04:33,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43db7010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:04:33, skipping insertion in model container [2023-01-28 05:04:33,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:04:33" (2/3) ... [2023-01-28 05:04:33,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43db7010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:04:33, skipping insertion in model container [2023-01-28 05:04:33,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:04:33" (3/3) ... [2023-01-28 05:04:33,680 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-01-28 05:04:33,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:04:33,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:04:33,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:04:33,749 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 05:04:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 212 flow [2023-01-28 05:04:33,819 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2023-01-28 05:04:33,819 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:04:33,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 7/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-01-28 05:04:33,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 94 transitions, 212 flow [2023-01-28 05:04:33,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 81 transitions, 180 flow [2023-01-28 05:04:33,827 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:04:33,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 81 transitions, 180 flow [2023-01-28 05:04:33,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 81 transitions, 180 flow [2023-01-28 05:04:33,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 180 flow [2023-01-28 05:04:33,869 INFO L130 PetriNetUnfolder]: 7/81 cut-off events. [2023-01-28 05:04:33,869 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:04:33,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 7/81 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-01-28 05:04:33,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 860 [2023-01-28 05:04:35,567 INFO L134 LiptonReduction]: Checked pairs total: 1280 [2023-01-28 05:04:35,567 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-01-28 05:04:35,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:04:35,583 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;@7e37ec0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:04:35,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 05:04:35,604 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2023-01-28 05:04:35,604 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:04:35,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:35,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:35,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:35,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1858201439, now seen corresponding path program 1 times [2023-01-28 05:04:35,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:35,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929674642] [2023-01-28 05:04:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:35,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:36,089 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 05:04:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:36,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929674642] [2023-01-28 05:04:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929674642] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:04:36,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:04:36,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 05:04:36,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755826565] [2023-01-28 05:04:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:36,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:04:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:04:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:04:36,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 158 [2023-01-28 05:04:36,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:36,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 158 [2023-01-28 05:04:36,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:36,227 INFO L130 PetriNetUnfolder]: 271/426 cut-off events. [2023-01-28 05:04:36,227 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-01-28 05:04:36,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 426 events. 271/426 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1528 event pairs, 37 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 671. Up to 309 conditions per place. [2023-01-28 05:04:36,234 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2023-01-28 05:04:36,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2023-01-28 05:04:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:04:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:04:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-01-28 05:04:36,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632911392405063 [2023-01-28 05:04:36,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-01-28 05:04:36,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-01-28 05:04:36,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:36,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-01-28 05:04:36,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,264 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 267 transitions. [2023-01-28 05:04:36,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 181 flow [2023-01-28 05:04:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 05:04:36,268 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 78 flow [2023-01-28 05:04:36,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-01-28 05:04:36,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-28 05:04:36,272 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 78 flow [2023-01-28 05:04:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:36,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:04:36,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:36,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:36,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1511050058, now seen corresponding path program 1 times [2023-01-28 05:04:36,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:36,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264941014] [2023-01-28 05:04:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:36,511 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 05:04:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264941014] [2023-01-28 05:04:36,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264941014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:04:36,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:04:36,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:04:36,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156054616] [2023-01-28 05:04:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:36,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:04:36,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:36,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:04:36,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:04:36,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-01-28 05:04:36,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:36,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-01-28 05:04:36,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:36,678 INFO L130 PetriNetUnfolder]: 459/707 cut-off events. [2023-01-28 05:04:36,678 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-01-28 05:04:36,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 707 events. 459/707 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2552 event pairs, 40 based on Foata normal form. 40/747 useless extension candidates. Maximal degree in co-relation 353. Up to 277 conditions per place. [2023-01-28 05:04:36,682 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 72 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-01-28 05:04:36,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 84 transitions, 395 flow [2023-01-28 05:04:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:04:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:04:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 560 transitions. [2023-01-28 05:04:36,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063291139240507 [2023-01-28 05:04:36,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 560 transitions. [2023-01-28 05:04:36,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 560 transitions. [2023-01-28 05:04:36,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:36,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 560 transitions. [2023-01-28 05:04:36,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,688 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,688 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 78 flow. Second operand 7 states and 560 transitions. [2023-01-28 05:04:36,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 84 transitions, 395 flow [2023-01-28 05:04:36,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 84 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:04:36,691 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 154 flow [2023-01-28 05:04:36,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-01-28 05:04:36,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-01-28 05:04:36,691 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 154 flow [2023-01-28 05:04:36,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:36,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:36,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:04:36,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:36,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2072907592, now seen corresponding path program 2 times [2023-01-28 05:04:36,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:36,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751021514] [2023-01-28 05:04:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:36,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:36,839 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 05:04:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751021514] [2023-01-28 05:04:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751021514] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:04:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:04:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:04:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531651414] [2023-01-28 05:04:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:04:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:04:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:04:36,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-01-28 05:04:36,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:36,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:36,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-01-28 05:04:36,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:37,048 INFO L130 PetriNetUnfolder]: 947/1447 cut-off events. [2023-01-28 05:04:37,049 INFO L131 PetriNetUnfolder]: For 821/821 co-relation queries the response was YES. [2023-01-28 05:04:37,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4066 conditions, 1447 events. 947/1447 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6100 event pairs, 99 based on Foata normal form. 24/1471 useless extension candidates. Maximal degree in co-relation 2968. Up to 478 conditions per place. [2023-01-28 05:04:37,058 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 96 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2023-01-28 05:04:37,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 115 transitions, 646 flow [2023-01-28 05:04:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:04:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:04:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2023-01-28 05:04:37,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226039783001808 [2023-01-28 05:04:37,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2023-01-28 05:04:37,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2023-01-28 05:04:37,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:37,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2023-01-28 05:04:37,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,063 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,063 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 154 flow. Second operand 7 states and 578 transitions. [2023-01-28 05:04:37,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 115 transitions, 646 flow [2023-01-28 05:04:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 115 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:04:37,072 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 308 flow [2023-01-28 05:04:37,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-01-28 05:04:37,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2023-01-28 05:04:37,075 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 308 flow [2023-01-28 05:04:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:37,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:04:37,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:37,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2012888634, now seen corresponding path program 3 times [2023-01-28 05:04:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907176624] [2023-01-28 05:04:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:37,177 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 05:04:37,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:37,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907176624] [2023-01-28 05:04:37,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907176624] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:37,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939890122] [2023-01-28 05:04:37,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:04:37,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:37,181 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 05:04:37,199 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 05:04:37,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:04:37,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:04:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:04:37,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:37,340 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 05:04:37,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:37,437 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 05:04:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939890122] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:37,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:04:37,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-01-28 05:04:37,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397804136] [2023-01-28 05:04:37,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:37,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:04:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:04:37,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 05:04:37,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 158 [2023-01-28 05:04:37,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:37,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 158 [2023-01-28 05:04:37,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:37,647 INFO L130 PetriNetUnfolder]: 1079/1685 cut-off events. [2023-01-28 05:04:37,648 INFO L131 PetriNetUnfolder]: For 4174/4174 co-relation queries the response was YES. [2023-01-28 05:04:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 1685 events. 1079/1685 cut-off events. For 4174/4174 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7517 event pairs, 185 based on Foata normal form. 30/1715 useless extension candidates. Maximal degree in co-relation 4517. Up to 695 conditions per place. [2023-01-28 05:04:37,657 INFO L137 encePairwiseOnDemand]: 150/158 looper letters, 70 selfloop transitions, 30 changer transitions 0/100 dead transitions. [2023-01-28 05:04:37,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 745 flow [2023-01-28 05:04:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:04:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:04:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 556 transitions. [2023-01-28 05:04:37,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027124773960217 [2023-01-28 05:04:37,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 556 transitions. [2023-01-28 05:04:37,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 556 transitions. [2023-01-28 05:04:37,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:37,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 556 transitions. [2023-01-28 05:04:37,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.42857142857143) internal successors, (556), 7 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,662 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 308 flow. Second operand 7 states and 556 transitions. [2023-01-28 05:04:37,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 745 flow [2023-01-28 05:04:37,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 741 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 05:04:37,669 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 530 flow [2023-01-28 05:04:37,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-01-28 05:04:37,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-01-28 05:04:37,670 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 530 flow [2023-01-28 05:04:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:37,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:37,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:37,678 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 05:04:37,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:37,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:37,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1229482461, now seen corresponding path program 1 times [2023-01-28 05:04:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270197379] [2023-01-28 05:04:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:38,020 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 05:04:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270197379] [2023-01-28 05:04:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270197379] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757158064] [2023-01-28 05:04:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:38,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:38,038 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 05:04:38,064 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 05:04:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:38,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 05:04:38,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:38,318 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 05:04:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:38,504 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 05:04:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757158064] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:38,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:04:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 6] total 11 [2023-01-28 05:04:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886639287] [2023-01-28 05:04:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:04:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:38,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:04:38,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:04:38,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 05:04:38,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:38,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:38,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 05:04:38,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:38,853 INFO L130 PetriNetUnfolder]: 1352/2108 cut-off events. [2023-01-28 05:04:38,853 INFO L131 PetriNetUnfolder]: For 8573/8573 co-relation queries the response was YES. [2023-01-28 05:04:38,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9334 conditions, 2108 events. 1352/2108 cut-off events. For 8573/8573 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9990 event pairs, 59 based on Foata normal form. 12/2120 useless extension candidates. Maximal degree in co-relation 7191. Up to 1155 conditions per place. [2023-01-28 05:04:38,902 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 108 selfloop transitions, 50 changer transitions 7/165 dead transitions. [2023-01-28 05:04:38,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 165 transitions, 1512 flow [2023-01-28 05:04:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 05:04:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 05:04:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 710 transitions. [2023-01-28 05:04:38,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49929676511954996 [2023-01-28 05:04:38,904 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 710 transitions. [2023-01-28 05:04:38,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 710 transitions. [2023-01-28 05:04:38,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:38,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 710 transitions. [2023-01-28 05:04:38,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.88888888888889) internal successors, (710), 9 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:38,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:38,915 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:38,915 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 530 flow. Second operand 9 states and 710 transitions. [2023-01-28 05:04:38,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 165 transitions, 1512 flow [2023-01-28 05:04:38,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 165 transitions, 1472 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-01-28 05:04:38,934 INFO L231 Difference]: Finished difference. Result has 72 places, 95 transitions, 1085 flow [2023-01-28 05:04:38,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1085, PETRI_PLACES=72, PETRI_TRANSITIONS=95} [2023-01-28 05:04:38,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-01-28 05:04:38,935 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 95 transitions, 1085 flow [2023-01-28 05:04:38,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:38,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:38,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:38,948 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 05:04:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:39,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:39,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1535702041, now seen corresponding path program 1 times [2023-01-28 05:04:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848615792] [2023-01-28 05:04:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:39,343 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 05:04:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:39,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848615792] [2023-01-28 05:04:39,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848615792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:04:39,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:04:39,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:04:39,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422490852] [2023-01-28 05:04:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:39,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:04:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:04:39,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:04:39,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 158 [2023-01-28 05:04:39,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 95 transitions, 1085 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:39,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:39,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 158 [2023-01-28 05:04:39,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:39,685 INFO L130 PetriNetUnfolder]: 1750/2767 cut-off events. [2023-01-28 05:04:39,685 INFO L131 PetriNetUnfolder]: For 21102/21102 co-relation queries the response was YES. [2023-01-28 05:04:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14773 conditions, 2767 events. 1750/2767 cut-off events. For 21102/21102 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14158 event pairs, 330 based on Foata normal form. 36/2803 useless extension candidates. Maximal degree in co-relation 13563. Up to 1246 conditions per place. [2023-01-28 05:04:39,703 INFO L137 encePairwiseOnDemand]: 150/158 looper letters, 150 selfloop transitions, 70 changer transitions 10/230 dead transitions. [2023-01-28 05:04:39,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 230 transitions, 2913 flow [2023-01-28 05:04:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:04:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:04:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-01-28 05:04:39,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221518987341772 [2023-01-28 05:04:39,706 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-01-28 05:04:39,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-01-28 05:04:39,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:39,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-01-28 05:04:39,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 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 05:04:39,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:39,709 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:39,709 INFO L175 Difference]: Start difference. First operand has 72 places, 95 transitions, 1085 flow. Second operand 6 states and 495 transitions. [2023-01-28 05:04:39,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 230 transitions, 2913 flow [2023-01-28 05:04:39,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 230 transitions, 2830 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-01-28 05:04:39,775 INFO L231 Difference]: Finished difference. Result has 80 places, 152 transitions, 2083 flow [2023-01-28 05:04:39,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2083, PETRI_PLACES=80, PETRI_TRANSITIONS=152} [2023-01-28 05:04:39,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2023-01-28 05:04:39,777 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 152 transitions, 2083 flow [2023-01-28 05:04:39,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:39,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:39,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:04:39,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:39,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash 125532181, now seen corresponding path program 2 times [2023-01-28 05:04:39,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:39,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393655071] [2023-01-28 05:04:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:39,924 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 05:04:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393655071] [2023-01-28 05:04:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393655071] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938750440] [2023-01-28 05:04:39,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:04:39,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:39,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:39,925 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 05:04:39,927 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 05:04:39,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:04:39,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:04:39,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 05:04:39,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:40,079 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 05:04:40,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:40,259 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 05:04:40,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938750440] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:04:40,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:04:40,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-01-28 05:04:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225855274] [2023-01-28 05:04:40,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:04:40,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 05:04:40,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 05:04:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 05:04:40,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 158 [2023-01-28 05:04:40,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 152 transitions, 2083 flow. Second operand has 11 states, 11 states have (on average 70.45454545454545) internal successors, (775), 11 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:40,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:40,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 158 [2023-01-28 05:04:40,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:40,801 INFO L130 PetriNetUnfolder]: 2463/3841 cut-off events. [2023-01-28 05:04:40,801 INFO L131 PetriNetUnfolder]: For 32755/32755 co-relation queries the response was YES. [2023-01-28 05:04:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23705 conditions, 3841 events. 2463/3841 cut-off events. For 32755/32755 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20255 event pairs, 199 based on Foata normal form. 91/3932 useless extension candidates. Maximal degree in co-relation 20193. Up to 1970 conditions per place. [2023-01-28 05:04:40,838 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 230 selfloop transitions, 52 changer transitions 8/290 dead transitions. [2023-01-28 05:04:40,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 290 transitions, 4225 flow [2023-01-28 05:04:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:04:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:04:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 552 transitions. [2023-01-28 05:04:40,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49909584086799275 [2023-01-28 05:04:40,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 552 transitions. [2023-01-28 05:04:40,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 552 transitions. [2023-01-28 05:04:40,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:40,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 552 transitions. [2023-01-28 05:04:40,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:40,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:40,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:40,843 INFO L175 Difference]: Start difference. First operand has 80 places, 152 transitions, 2083 flow. Second operand 7 states and 552 transitions. [2023-01-28 05:04:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 290 transitions, 4225 flow [2023-01-28 05:04:40,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 290 transitions, 4105 flow, removed 60 selfloop flow, removed 0 redundant places. [2023-01-28 05:04:40,926 INFO L231 Difference]: Finished difference. Result has 89 places, 176 transitions, 2604 flow [2023-01-28 05:04:40,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2604, PETRI_PLACES=89, PETRI_TRANSITIONS=176} [2023-01-28 05:04:40,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-01-28 05:04:40,927 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 176 transitions, 2604 flow [2023-01-28 05:04:40,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.45454545454545) internal successors, (775), 11 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:40,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:40,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:40,947 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 05:04:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:41,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:41,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1951789929, now seen corresponding path program 2 times [2023-01-28 05:04:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:41,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84025194] [2023-01-28 05:04:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:41,303 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 05:04:41,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:41,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84025194] [2023-01-28 05:04:41,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84025194] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:04:41,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:04:41,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:04:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668478823] [2023-01-28 05:04:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:04:41,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:04:41,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:04:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:04:41,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 158 [2023-01-28 05:04:41,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 176 transitions, 2604 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:41,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:41,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 158 [2023-01-28 05:04:41,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:41,830 INFO L130 PetriNetUnfolder]: 2921/4690 cut-off events. [2023-01-28 05:04:41,830 INFO L131 PetriNetUnfolder]: For 49187/49187 co-relation queries the response was YES. [2023-01-28 05:04:41,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29534 conditions, 4690 events. 2921/4690 cut-off events. For 49187/49187 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26913 event pairs, 747 based on Foata normal form. 72/4762 useless extension candidates. Maximal degree in co-relation 26028. Up to 2341 conditions per place. [2023-01-28 05:04:41,859 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 150 selfloop transitions, 102 changer transitions 6/258 dead transitions. [2023-01-28 05:04:41,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 258 transitions, 4063 flow [2023-01-28 05:04:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:04:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:04:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2023-01-28 05:04:41,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265822784810127 [2023-01-28 05:04:41,861 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 416 transitions. [2023-01-28 05:04:41,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 416 transitions. [2023-01-28 05:04:41,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:41,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 416 transitions. [2023-01-28 05:04:41,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.2) internal successors, (416), 5 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 05:04:41,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:41,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:41,864 INFO L175 Difference]: Start difference. First operand has 89 places, 176 transitions, 2604 flow. Second operand 5 states and 416 transitions. [2023-01-28 05:04:41,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 258 transitions, 4063 flow [2023-01-28 05:04:41,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 258 transitions, 3960 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-01-28 05:04:41,968 INFO L231 Difference]: Finished difference. Result has 94 places, 191 transitions, 3162 flow [2023-01-28 05:04:41,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3162, PETRI_PLACES=94, PETRI_TRANSITIONS=191} [2023-01-28 05:04:41,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-01-28 05:04:41,971 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 191 transitions, 3162 flow [2023-01-28 05:04:41,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:41,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:41,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:41,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:04:41,971 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:41,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1119355907, now seen corresponding path program 3 times [2023-01-28 05:04:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:41,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072214365] [2023-01-28 05:04:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:41,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:42,105 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 05:04:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072214365] [2023-01-28 05:04:42,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072214365] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440155379] [2023-01-28 05:04:42,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:04:42,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:42,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:42,122 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 05:04:42,123 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 05:04:42,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:04:42,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:04:42,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 05:04:42,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:42,253 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 05:04:42,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:42,417 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 05:04:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440155379] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:04:42,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:04:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2023-01-28 05:04:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217935875] [2023-01-28 05:04:42,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:04:42,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 05:04:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 05:04:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 05:04:42,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 158 [2023-01-28 05:04:42,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 191 transitions, 3162 flow. Second operand has 11 states, 11 states have (on average 68.45454545454545) internal successors, (753), 11 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:42,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:42,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 158 [2023-01-28 05:04:42,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:43,766 INFO L130 PetriNetUnfolder]: 4751/7627 cut-off events. [2023-01-28 05:04:43,766 INFO L131 PetriNetUnfolder]: For 89665/89665 co-relation queries the response was YES. [2023-01-28 05:04:43,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51300 conditions, 7627 events. 4751/7627 cut-off events. For 89665/89665 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 47565 event pairs, 316 based on Foata normal form. 167/7794 useless extension candidates. Maximal degree in co-relation 44325. Up to 2138 conditions per place. [2023-01-28 05:04:43,814 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 270 selfloop transitions, 229 changer transitions 89/588 dead transitions. [2023-01-28 05:04:43,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 588 transitions, 8960 flow [2023-01-28 05:04:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 05:04:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 05:04:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1589 transitions. [2023-01-28 05:04:43,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-01-28 05:04:43,817 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1589 transitions. [2023-01-28 05:04:43,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1589 transitions. [2023-01-28 05:04:43,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:43,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1589 transitions. [2023-01-28 05:04:43,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 75.66666666666667) internal successors, (1589), 21 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:43,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 158.0) internal successors, (3476), 22 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:43,824 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 158.0) internal successors, (3476), 22 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:43,824 INFO L175 Difference]: Start difference. First operand has 94 places, 191 transitions, 3162 flow. Second operand 21 states and 1589 transitions. [2023-01-28 05:04:43,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 588 transitions, 8960 flow [2023-01-28 05:04:44,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 588 transitions, 8673 flow, removed 66 selfloop flow, removed 2 redundant places. [2023-01-28 05:04:44,193 INFO L231 Difference]: Finished difference. Result has 126 places, 308 transitions, 5948 flow [2023-01-28 05:04:44,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5948, PETRI_PLACES=126, PETRI_TRANSITIONS=308} [2023-01-28 05:04:44,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2023-01-28 05:04:44,194 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 308 transitions, 5948 flow [2023-01-28 05:04:44,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.45454545454545) internal successors, (753), 11 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:44,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:44,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:44,201 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 05:04:44,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:44,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:44,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash 693870644, now seen corresponding path program 1 times [2023-01-28 05:04:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:44,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354184457] [2023-01-28 05:04:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:44,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:44,658 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 05:04:44,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354184457] [2023-01-28 05:04:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354184457] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789900304] [2023-01-28 05:04:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:44,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:44,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:44,674 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 05:04:44,676 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 05:04:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:44,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 05:04:44,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:44,918 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 05:04:44,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:45,095 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 05:04:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789900304] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:04:45,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:04:45,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-01-28 05:04:45,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598110218] [2023-01-28 05:04:45,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:04:45,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:04:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:45,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:04:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:04:45,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 158 [2023-01-28 05:04:45,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 308 transitions, 5948 flow. Second operand has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:45,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:45,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 158 [2023-01-28 05:04:45,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:46,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 05:04:48,074 INFO L130 PetriNetUnfolder]: 5704/9262 cut-off events. [2023-01-28 05:04:48,074 INFO L131 PetriNetUnfolder]: For 153472/153472 co-relation queries the response was YES. [2023-01-28 05:04:48,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70154 conditions, 9262 events. 5704/9262 cut-off events. For 153472/153472 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60424 event pairs, 404 based on Foata normal form. 8/9270 useless extension candidates. Maximal degree in co-relation 65121. Up to 5358 conditions per place. [2023-01-28 05:04:48,158 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 376 selfloop transitions, 193 changer transitions 5/574 dead transitions. [2023-01-28 05:04:48,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 574 transitions, 11440 flow [2023-01-28 05:04:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 05:04:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 05:04:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 682 transitions. [2023-01-28 05:04:48,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47960618846694797 [2023-01-28 05:04:48,160 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 682 transitions. [2023-01-28 05:04:48,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 682 transitions. [2023-01-28 05:04:48,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:48,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 682 transitions. [2023-01-28 05:04:48,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:48,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:48,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:48,164 INFO L175 Difference]: Start difference. First operand has 126 places, 308 transitions, 5948 flow. Second operand 9 states and 682 transitions. [2023-01-28 05:04:48,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 574 transitions, 11440 flow [2023-01-28 05:04:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 574 transitions, 10527 flow, removed 398 selfloop flow, removed 12 redundant places. [2023-01-28 05:04:48,816 INFO L231 Difference]: Finished difference. Result has 122 places, 419 transitions, 8443 flow [2023-01-28 05:04:48,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=5409, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8443, PETRI_PLACES=122, PETRI_TRANSITIONS=419} [2023-01-28 05:04:48,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2023-01-28 05:04:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 419 transitions, 8443 flow [2023-01-28 05:04:48,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:48,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:48,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:48,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 05:04:49,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 05:04:49,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:49,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1627485648, now seen corresponding path program 2 times [2023-01-28 05:04:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:49,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343989572] [2023-01-28 05:04:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:49,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:49,247 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 05:04:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343989572] [2023-01-28 05:04:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343989572] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644034284] [2023-01-28 05:04:49,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:04:49,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:49,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:04:49,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:04:49,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:04:49,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:04:49,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 05:04:49,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:49,382 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 05:04:49,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:49,619 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 05:04:49,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644034284] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:04:49,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:04:49,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2023-01-28 05:04:49,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756285448] [2023-01-28 05:04:49,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:04:49,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:04:49,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:49,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:04:49,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:04:49,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 158 [2023-01-28 05:04:49,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 419 transitions, 8443 flow. Second operand has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:49,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:49,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 158 [2023-01-28 05:04:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:04:51,555 INFO L130 PetriNetUnfolder]: 6242/10094 cut-off events. [2023-01-28 05:04:51,556 INFO L131 PetriNetUnfolder]: For 164692/164692 co-relation queries the response was YES. [2023-01-28 05:04:51,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76186 conditions, 10094 events. 6242/10094 cut-off events. For 164692/164692 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 66614 event pairs, 604 based on Foata normal form. 8/10102 useless extension candidates. Maximal degree in co-relation 72345. Up to 7372 conditions per place. [2023-01-28 05:04:51,637 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 402 selfloop transitions, 196 changer transitions 6/604 dead transitions. [2023-01-28 05:04:51,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 604 transitions, 12526 flow [2023-01-28 05:04:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:04:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:04:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 803 transitions. [2023-01-28 05:04:51,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4620253164556962 [2023-01-28 05:04:51,639 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 803 transitions. [2023-01-28 05:04:51,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 803 transitions. [2023-01-28 05:04:51,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:04:51,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 803 transitions. [2023-01-28 05:04:51,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:51,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:51,643 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:51,643 INFO L175 Difference]: Start difference. First operand has 122 places, 419 transitions, 8443 flow. Second operand 11 states and 803 transitions. [2023-01-28 05:04:51,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 604 transitions, 12526 flow [2023-01-28 05:04:52,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 604 transitions, 11943 flow, removed 282 selfloop flow, removed 2 redundant places. [2023-01-28 05:04:52,439 INFO L231 Difference]: Finished difference. Result has 135 places, 501 transitions, 10290 flow [2023-01-28 05:04:52,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10290, PETRI_PLACES=135, PETRI_TRANSITIONS=501} [2023-01-28 05:04:52,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2023-01-28 05:04:52,440 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 501 transitions, 10290 flow [2023-01-28 05:04:52,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.25) internal successors, (819), 12 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:52,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:04:52,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:04:52,451 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 05:04:52,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:52,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:04:52,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:04:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash -994462518, now seen corresponding path program 1 times [2023-01-28 05:04:52,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:04:52,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700175817] [2023-01-28 05:04:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:04:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:52,836 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 05:04:52,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:04:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700175817] [2023-01-28 05:04:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700175817] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:04:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571480956] [2023-01-28 05:04:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:04:52,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:04:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:04:52,850 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 05:04:52,851 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 05:04:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:04:52,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 05:04:52,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:04:53,138 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 05:04:53,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:04:53,460 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 05:04:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571480956] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:04:53,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:04:53,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2023-01-28 05:04:53,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168154489] [2023-01-28 05:04:53,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:04:53,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 05:04:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:04:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 05:04:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-01-28 05:04:53,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 05:04:53,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 501 transitions, 10290 flow. Second operand has 21 states, 21 states have (on average 68.33333333333333) internal successors, (1435), 21 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:04:53,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:04:53,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 05:04:53,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:05:01,014 INFO L130 PetriNetUnfolder]: 12930/20430 cut-off events. [2023-01-28 05:05:01,015 INFO L131 PetriNetUnfolder]: For 409575/409575 co-relation queries the response was YES. [2023-01-28 05:05:01,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157300 conditions, 20430 events. 12930/20430 cut-off events. For 409575/409575 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 144735 event pairs, 186 based on Foata normal form. 1516/21946 useless extension candidates. Maximal degree in co-relation 157244. Up to 5213 conditions per place. [2023-01-28 05:05:01,211 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 681 selfloop transitions, 1648 changer transitions 0/2329 dead transitions. [2023-01-28 05:05:01,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 2329 transitions, 41837 flow [2023-01-28 05:05:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-01-28 05:05:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-01-28 05:05:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 6659 transitions. [2023-01-28 05:05:01,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844318347155536 [2023-01-28 05:05:01,220 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 6659 transitions. [2023-01-28 05:05:01,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 6659 transitions. [2023-01-28 05:05:01,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:05:01,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 6659 transitions. [2023-01-28 05:05:01,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 76.54022988505747) internal successors, (6659), 87 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:01,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 158.0) internal successors, (13904), 88 states have internal predecessors, (13904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:01,242 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 158.0) internal successors, (13904), 88 states have internal predecessors, (13904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:01,242 INFO L175 Difference]: Start difference. First operand has 135 places, 501 transitions, 10290 flow. Second operand 87 states and 6659 transitions. [2023-01-28 05:05:01,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 2329 transitions, 41837 flow [2023-01-28 05:05:03,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 2329 transitions, 40668 flow, removed 574 selfloop flow, removed 6 redundant places. [2023-01-28 05:05:03,420 INFO L231 Difference]: Finished difference. Result has 253 places, 1781 transitions, 39288 flow [2023-01-28 05:05:03,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=8141, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=39288, PETRI_PLACES=253, PETRI_TRANSITIONS=1781} [2023-01-28 05:05:03,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2023-01-28 05:05:03,422 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 1781 transitions, 39288 flow [2023-01-28 05:05:03,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 68.33333333333333) internal successors, (1435), 21 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:03,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:05:03,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:05:03,432 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 05:05:03,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:05:03,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:05:03,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:05:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1240215054, now seen corresponding path program 2 times [2023-01-28 05:05:03,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:05:03,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634562235] [2023-01-28 05:05:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:05:03,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:05:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:05:03,792 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 05:05:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:05:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634562235] [2023-01-28 05:05:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634562235] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:05:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272446228] [2023-01-28 05:05:03,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:05:03,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:05:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:05:03,794 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 05:05:03,796 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 05:05:03,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:05:03,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:05:03,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 05:05:03,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:05:04,119 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 05:05:04,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:05:04,416 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 05:05:04,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272446228] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:05:04,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:05:04,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-01-28 05:05:04,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70427308] [2023-01-28 05:05:04,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:05:04,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:05:04,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:05:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:05:04,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:05:04,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 05:05:04,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 1781 transitions, 39288 flow. Second operand has 20 states, 20 states have (on average 68.45) internal successors, (1369), 20 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:04,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:05:04,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 05:05:04,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:05:21,765 INFO L130 PetriNetUnfolder]: 23279/37437 cut-off events. [2023-01-28 05:05:21,765 INFO L131 PetriNetUnfolder]: For 1101888/1101888 co-relation queries the response was YES. [2023-01-28 05:05:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350006 conditions, 37437 events. 23279/37437 cut-off events. For 1101888/1101888 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 296933 event pairs, 417 based on Foata normal form. 936/38373 useless extension candidates. Maximal degree in co-relation 349910. Up to 9517 conditions per place. [2023-01-28 05:05:22,361 INFO L137 encePairwiseOnDemand]: 146/158 looper letters, 1623 selfloop transitions, 2895 changer transitions 0/4518 dead transitions. [2023-01-28 05:05:22,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 4518 transitions, 103062 flow [2023-01-28 05:05:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-01-28 05:05:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-01-28 05:05:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 5363 transitions. [2023-01-28 05:05:22,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849005424954792 [2023-01-28 05:05:22,371 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 5363 transitions. [2023-01-28 05:05:22,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 5363 transitions. [2023-01-28 05:05:22,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:05:22,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 5363 transitions. [2023-01-28 05:05:22,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 76.61428571428571) internal successors, (5363), 70 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:22,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 158.0) internal successors, (11218), 71 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:22,386 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 158.0) internal successors, (11218), 71 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:22,386 INFO L175 Difference]: Start difference. First operand has 253 places, 1781 transitions, 39288 flow. Second operand 70 states and 5363 transitions. [2023-01-28 05:05:22,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 4518 transitions, 103062 flow [2023-01-28 05:05:49,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 4518 transitions, 90703 flow, removed 5786 selfloop flow, removed 7 redundant places. [2023-01-28 05:05:49,497 INFO L231 Difference]: Finished difference. Result has 359 places, 3832 transitions, 84741 flow [2023-01-28 05:05:49,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=33061, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=84741, PETRI_PLACES=359, PETRI_TRANSITIONS=3832} [2023-01-28 05:05:49,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2023-01-28 05:05:49,498 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 3832 transitions, 84741 flow [2023-01-28 05:05:49,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 68.45) internal successors, (1369), 20 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:49,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:05:49,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:05:49,510 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 05:05:49,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 05:05:49,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:05:49,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:05:49,704 INFO L85 PathProgramCache]: Analyzing trace with hash 913127508, now seen corresponding path program 3 times [2023-01-28 05:05:49,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:05:49,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041181939] [2023-01-28 05:05:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:05:49,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:05:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:05:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:05:49,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:05:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041181939] [2023-01-28 05:05:49,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041181939] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:05:49,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678426932] [2023-01-28 05:05:49,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:05:49,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:05:49,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:05:49,829 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 05:05:49,830 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 05:05:49,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:05:49,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:05:49,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 05:05:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:05:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:05:49,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:05:50,224 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 05:05:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678426932] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:05:50,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:05:50,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 16 [2023-01-28 05:05:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007856825] [2023-01-28 05:05:50,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:05:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 05:05:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:05:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 05:05:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-01-28 05:05:50,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 05:05:50,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 3832 transitions, 84741 flow. Second operand has 17 states, 17 states have (on average 68.3529411764706) internal successors, (1162), 17 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:05:50,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:05:50,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 05:05:50,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:06:40,803 INFO L130 PetriNetUnfolder]: 37843/62479 cut-off events. [2023-01-28 05:06:40,803 INFO L131 PetriNetUnfolder]: For 2244488/2244488 co-relation queries the response was YES. [2023-01-28 05:06:42,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601162 conditions, 62479 events. 37843/62479 cut-off events. For 2244488/2244488 co-relation queries the response was YES. Maximal size of possible extension queue 3428. Compared 553153 event pairs, 528 based on Foata normal form. 1046/63525 useless extension candidates. Maximal degree in co-relation 601027. Up to 12149 conditions per place. [2023-01-28 05:06:42,306 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 1534 selfloop transitions, 6374 changer transitions 0/7908 dead transitions. [2023-01-28 05:06:42,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 7908 transitions, 192235 flow [2023-01-28 05:06:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-28 05:06:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-28 05:06:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5632 transitions. [2023-01-28 05:06:42,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527426160337555 [2023-01-28 05:06:42,310 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 5632 transitions. [2023-01-28 05:06:42,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 5632 transitions. [2023-01-28 05:06:42,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:06:42,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 5632 transitions. [2023-01-28 05:06:42,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 75.09333333333333) internal successors, (5632), 75 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:06:42,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 158.0) internal successors, (12008), 76 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:06:42,328 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 158.0) internal successors, (12008), 76 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:06:42,329 INFO L175 Difference]: Start difference. First operand has 359 places, 3832 transitions, 84741 flow. Second operand 75 states and 5632 transitions. [2023-01-28 05:06:42,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 7908 transitions, 192235 flow [2023-01-28 05:08:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 7908 transitions, 182024 flow, removed 5065 selfloop flow, removed 2 redundant places. [2023-01-28 05:08:58,690 INFO L231 Difference]: Finished difference. Result has 488 places, 7228 transitions, 181774 flow [2023-01-28 05:08:58,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=80279, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=181774, PETRI_PLACES=488, PETRI_TRANSITIONS=7228} [2023-01-28 05:08:58,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-01-28 05:08:58,694 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 7228 transitions, 181774 flow [2023-01-28 05:08:58,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 68.3529411764706) internal successors, (1162), 17 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:08:58,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:08:58,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:08:58,715 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 05:08:58,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 05:08:58,899 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:08:58,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:08:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash 283146836, now seen corresponding path program 4 times [2023-01-28 05:08:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:08:58,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485675908] [2023-01-28 05:08:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:08:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:08:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:08:59,030 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 05:08:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:08:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485675908] [2023-01-28 05:08:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485675908] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:08:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192972269] [2023-01-28 05:08:59,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:08:59,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:08:59,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:08:59,045 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 05:08:59,086 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 05:08:59,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:08:59,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:08:59,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 05:08:59,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:08:59,346 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 05:08:59,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:08:59,620 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 05:08:59,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192972269] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:08:59,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:08:59,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-01-28 05:08:59,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471868452] [2023-01-28 05:08:59,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:08:59,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:08:59,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:08:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:08:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:08:59,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2023-01-28 05:08:59,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 7228 transitions, 181774 flow. Second operand has 20 states, 20 states have (on average 68.45) internal successors, (1369), 20 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:08:59,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:08:59,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2023-01-28 05:08:59,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:12:29,253 INFO L130 PetriNetUnfolder]: 67859/115312 cut-off events. [2023-01-28 05:12:29,254 INFO L131 PetriNetUnfolder]: For 5438769/5438769 co-relation queries the response was YES. [2023-01-28 05:12:32,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222760 conditions, 115312 events. 67859/115312 cut-off events. For 5438769/5438769 co-relation queries the response was YES. Maximal size of possible extension queue 6145. Compared 1139650 event pairs, 1615 based on Foata normal form. 1960/117272 useless extension candidates. Maximal degree in co-relation 1222570. Up to 22433 conditions per place. [2023-01-28 05:12:33,589 INFO L137 encePairwiseOnDemand]: 147/158 looper letters, 4667 selfloop transitions, 10218 changer transitions 3/14888 dead transitions. [2023-01-28 05:12:33,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 14888 transitions, 401841 flow [2023-01-28 05:12:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-01-28 05:12:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-01-28 05:12:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 5892 transitions. [2023-01-28 05:12:33,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843005096169653 [2023-01-28 05:12:33,595 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 5892 transitions. [2023-01-28 05:12:33,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 5892 transitions. [2023-01-28 05:12:33,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:12:33,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 5892 transitions. [2023-01-28 05:12:33,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 76.51948051948052) internal successors, (5892), 77 states have internal predecessors, (5892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:12:33,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 158.0) internal successors, (12324), 78 states have internal predecessors, (12324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:12:33,610 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 158.0) internal successors, (12324), 78 states have internal predecessors, (12324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:12:33,610 INFO L175 Difference]: Start difference. First operand has 488 places, 7228 transitions, 181774 flow. Second operand 77 states and 5892 transitions. [2023-01-28 05:12:33,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 14888 transitions, 401841 flow Received shutdown request... [2023-01-28 05:18:42,860 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:18:42,860 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:18:43,548 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 05:18:43,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 05:18:43,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 05:18:43,749 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 05:18:43,750 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 05:18:43,751 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 05:18:43,751 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 05:18:43,751 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 1] [2023-01-28 05:18:43,754 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:18:43,754 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:18:43,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:18:43 BasicIcfg [2023-01-28 05:18:43,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:18:43,756 INFO L158 Benchmark]: Toolchain (without parser) took 850755.64ms. Allocated memory was 509.6MB in the beginning and 8.5GB in the end (delta: 8.0GB). Free memory was 475.7MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. [2023-01-28 05:18:43,756 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 350.2MB. Free memory is still 305.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:18:43,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.36ms. Allocated memory is still 509.6MB. Free memory was 475.2MB in the beginning and 464.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 05:18:43,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.75ms. Allocated memory is still 509.6MB. Free memory was 464.2MB in the beginning and 462.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:18:43,757 INFO L158 Benchmark]: Boogie Preprocessor took 30.16ms. Allocated memory is still 509.6MB. Free memory was 462.6MB in the beginning and 461.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:18:43,757 INFO L158 Benchmark]: RCFGBuilder took 466.39ms. Allocated memory is still 509.6MB. Free memory was 461.1MB in the beginning and 444.8MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 05:18:43,757 INFO L158 Benchmark]: TraceAbstraction took 850079.85ms. Allocated memory was 509.6MB in the beginning and 8.5GB in the end (delta: 8.0GB). Free memory was 444.3MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. [2023-01-28 05:18:43,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 350.2MB. Free memory is still 305.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 153.36ms. Allocated memory is still 509.6MB. Free memory was 475.2MB in the beginning and 464.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.75ms. Allocated memory is still 509.6MB. Free memory was 464.2MB in the beginning and 462.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.16ms. Allocated memory is still 509.6MB. Free memory was 462.6MB in the beginning and 461.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 466.39ms. Allocated memory is still 509.6MB. Free memory was 461.1MB in the beginning and 444.8MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 850079.85ms. Allocated memory was 509.6MB in the beginning and 8.5GB in the end (delta: 8.0GB). Free memory was 444.3MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 84 PlacesBefore, 30 PlacesAfterwards, 81 TransitionsBefore, 23 TransitionsAfterwards, 860 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 64 TotalNumberOfCompositions, 1280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1089, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 441, independent: 436, independent conditional: 0, independent unconditional: 436, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1089, independent: 627, independent conditional: 0, independent unconditional: 627, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 441, unknown conditional: 0, unknown unconditional: 441] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 110 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 850.0s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 838.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2689 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2689 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 7.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 491 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10045 IncrementalHoareTripleChecker+Invalid, 10536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 491 mSolverCounterUnsat, 42 mSDtfsCounter, 10045 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 322 SyntacticMatches, 7 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9911 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181774occurred in iteration=14, InterpolantAutomatonStates: 324, 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, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 676 ConstructedInterpolants, 0 QuantifiedInterpolants, 7658 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1611 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 8/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown