/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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:47:33,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:47:33,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:47:33,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:47:33,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:47:33,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:47:33,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:47:33,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:47:33,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:47:33,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:47:33,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:47:33,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:47:33,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:47:33,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:47:33,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:47:33,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:47:33,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:47:33,195 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 00:47:33,221 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:47:33,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:47:33,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:47:33,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:47:33,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:47:33,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:47:33,223 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:47:33,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:47:33,224 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:47:33,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:47:33,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:47:33,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:47:33,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:47:33,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:47:33,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:47:33,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:47:33,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:47:33,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:47:33,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:47:33,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:47:33,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:47:33,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:47:33,483 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:47:33,483 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:47:33,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:47:34,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:47:34,838 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:47:34,839 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:47:34,856 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417965a0c/1139588e3efe419daf2cddc43058a93f/FLAG8c3f10685 [2023-01-28 00:47:35,135 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417965a0c/1139588e3efe419daf2cddc43058a93f [2023-01-28 00:47:35,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:47:35,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:47:35,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:47:35,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:47:35,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:47:35,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c876f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35, skipping insertion in model container [2023-01-28 00:47:35,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:47:35,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:47:35,335 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:47:35,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:47:35,533 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:47:35,544 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 00:47:35,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:47:35,620 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:47:35,621 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:47:35,627 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:47:35,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35 WrapperNode [2023-01-28 00:47:35,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:47:35,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:47:35,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:47:35,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:47:35,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,685 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-01-28 00:47:35,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:47:35,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:47:35,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:47:35,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:47:35,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:47:35,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:47:35,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:47:35,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:47:35,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (1/1) ... [2023-01-28 00:47:35,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:47:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:47:35,788 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 00:47:35,810 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 00:47:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:47:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:47:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:47:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:47:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:47:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:47:35,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:47:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:47:35,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:47:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:47:35,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:47:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-01-28 00:47:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-01-28 00:47:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:47:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:47:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:47:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:47:35,827 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 00:47:35,951 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:47:35,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:47:36,114 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:47:36,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:47:36,120 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:47:36,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:47:36 BoogieIcfgContainer [2023-01-28 00:47:36,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:47:36,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:47:36,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:47:36,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:47:36,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:47:35" (1/3) ... [2023-01-28 00:47:36,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41720374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:47:36, skipping insertion in model container [2023-01-28 00:47:36,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:35" (2/3) ... [2023-01-28 00:47:36,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41720374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:47:36, skipping insertion in model container [2023-01-28 00:47:36,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:47:36" (3/3) ... [2023-01-28 00:47:36,133 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 00:47:36,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:47:36,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:47:36,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:47:36,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:47:36,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2023-01-28 00:47:36,361 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2023-01-28 00:47:36,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:36,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-01-28 00:47:36,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 98 transitions, 216 flow [2023-01-28 00:47:36,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 80 transitions, 172 flow [2023-01-28 00:47:36,372 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:47:36,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 80 transitions, 172 flow [2023-01-28 00:47:36,382 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 80 transitions, 172 flow [2023-01-28 00:47:36,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 80 transitions, 172 flow [2023-01-28 00:47:36,408 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2023-01-28 00:47:36,408 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:36,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 43 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-01-28 00:47:36,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-01-28 00:47:38,433 INFO L134 LiptonReduction]: Checked pairs total: 2424 [2023-01-28 00:47:38,433 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-01-28 00:47:38,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:47:38,461 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;@61a63dce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:47:38,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 00:47:38,473 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-01-28 00:47:38,473 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:38,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:38,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:38,476 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 2 more)] === [2023-01-28 00:47:38,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1184454526, now seen corresponding path program 1 times [2023-01-28 00:47:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:38,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662028386] [2023-01-28 00:47:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:39,057 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 00:47:39,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:39,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662028386] [2023-01-28 00:47:39,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662028386] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:39,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:39,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:47:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592642679] [2023-01-28 00:47:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:47:39,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:39,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:47:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:47:39,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:39,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:39,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:39,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:39,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:39,461 INFO L130 PetriNetUnfolder]: 2019/2943 cut-off events. [2023-01-28 00:47:39,461 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-01-28 00:47:39,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13535 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2023-01-28 00:47:39,484 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-01-28 00:47:39,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-01-28 00:47:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:47:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:47:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-01-28 00:47:39,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720164609053497 [2023-01-28 00:47:39,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-01-28 00:47:39,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-01-28 00:47:39,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:39,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-01-28 00:47:39,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:39,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:39,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:39,518 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 278 transitions. [2023-01-28 00:47:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-01-28 00:47:39,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:47:39,524 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-01-28 00:47:39,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-01-28 00:47:39,531 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-01-28 00:47:39,531 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-01-28 00:47:39,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:39,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:47:39,533 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 2 more)] === [2023-01-28 00:47:39,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616182, now seen corresponding path program 1 times [2023-01-28 00:47:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79646403] [2023-01-28 00:47:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:39,767 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 00:47:39,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79646403] [2023-01-28 00:47:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79646403] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:39,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:39,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:39,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719999237] [2023-01-28 00:47:39,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:39,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:39,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:39,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:39,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:39,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:40,051 INFO L130 PetriNetUnfolder]: 1886/2759 cut-off events. [2023-01-28 00:47:40,051 INFO L131 PetriNetUnfolder]: For 1170/1170 co-relation queries the response was YES. [2023-01-28 00:47:40,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12651 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2023-01-28 00:47:40,068 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-01-28 00:47:40,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-01-28 00:47:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2023-01-28 00:47:40,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2023-01-28 00:47:40,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2023-01-28 00:47:40,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2023-01-28 00:47:40,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:40,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2023-01-28 00:47:40,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,076 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 363 transitions. [2023-01-28 00:47:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-01-28 00:47:40,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:47:40,086 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-01-28 00:47:40,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-01-28 00:47:40,087 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-01-28 00:47:40,087 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-01-28 00:47:40,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:40,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:40,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:47:40,088 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 2 more)] === [2023-01-28 00:47:40,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616027, now seen corresponding path program 1 times [2023-01-28 00:47:40,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:40,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835132640] [2023-01-28 00:47:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:40,252 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 00:47:40,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835132640] [2023-01-28 00:47:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835132640] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:40,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491308600] [2023-01-28 00:47:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:40,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:40,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:40,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:40,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:40,493 INFO L130 PetriNetUnfolder]: 1806/2649 cut-off events. [2023-01-28 00:47:40,493 INFO L131 PetriNetUnfolder]: For 2734/2734 co-relation queries the response was YES. [2023-01-28 00:47:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2649 events. 1806/2649 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11781 event pairs, 251 based on Foata normal form. 12/2661 useless extension candidates. Maximal degree in co-relation 8036. Up to 1306 conditions per place. [2023-01-28 00:47:40,510 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 40 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2023-01-28 00:47:40,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 358 flow [2023-01-28 00:47:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-01-28 00:47:40,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632716049382716 [2023-01-28 00:47:40,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-01-28 00:47:40,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-01-28 00:47:40,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:40,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-01-28 00:47:40,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,516 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 365 transitions. [2023-01-28 00:47:40,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 358 flow [2023-01-28 00:47:40,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:47:40,524 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 274 flow [2023-01-28 00:47:40,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-01-28 00:47:40,525 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-01-28 00:47:40,526 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 274 flow [2023-01-28 00:47:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:40,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:40,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:47:40,527 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 2 more)] === [2023-01-28 00:47:40,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash -481665748, now seen corresponding path program 1 times [2023-01-28 00:47:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:40,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944131996] [2023-01-28 00:47:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:40,647 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 00:47:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944131996] [2023-01-28 00:47:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944131996] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:40,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:47:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870033286] [2023-01-28 00:47:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:40,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:47:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:47:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:47:40,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 162 [2023-01-28 00:47:40,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:40,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 162 [2023-01-28 00:47:40,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:40,864 INFO L130 PetriNetUnfolder]: 1401/2161 cut-off events. [2023-01-28 00:47:40,864 INFO L131 PetriNetUnfolder]: For 4541/4592 co-relation queries the response was YES. [2023-01-28 00:47:40,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 2161 events. 1401/2161 cut-off events. For 4541/4592 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10627 event pairs, 665 based on Foata normal form. 61/2153 useless extension candidates. Maximal degree in co-relation 7498. Up to 1660 conditions per place. [2023-01-28 00:47:40,883 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 45 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-01-28 00:47:40,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 474 flow [2023-01-28 00:47:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:47:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:47:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-28 00:47:40,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090534979423868 [2023-01-28 00:47:40,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-28 00:47:40,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-28 00:47:40,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:40,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-28 00:47:40,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,892 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 274 flow. Second operand 3 states and 296 transitions. [2023-01-28 00:47:40,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 474 flow [2023-01-28 00:47:40,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:47:40,958 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 288 flow [2023-01-28 00:47:40,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-28 00:47:40,958 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-01-28 00:47:40,959 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 288 flow [2023-01-28 00:47:40,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:40,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:40,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:40,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:47:40,959 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 2 more)] === [2023-01-28 00:47:40,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1367333638, now seen corresponding path program 1 times [2023-01-28 00:47:40,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:40,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888429931] [2023-01-28 00:47:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:40,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:41,138 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 00:47:41,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888429931] [2023-01-28 00:47:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888429931] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:41,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:41,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984596136] [2023-01-28 00:47:41,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:41,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:41,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:41,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:41,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:41,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:41,401 INFO L130 PetriNetUnfolder]: 1673/2462 cut-off events. [2023-01-28 00:47:41,401 INFO L131 PetriNetUnfolder]: For 5691/5691 co-relation queries the response was YES. [2023-01-28 00:47:41,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2462 events. 1673/2462 cut-off events. For 5691/5691 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11107 event pairs, 269 based on Foata normal form. 8/2470 useless extension candidates. Maximal degree in co-relation 8998. Up to 1319 conditions per place. [2023-01-28 00:47:41,419 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 50 selfloop transitions, 25 changer transitions 0/75 dead transitions. [2023-01-28 00:47:41,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 650 flow [2023-01-28 00:47:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-01-28 00:47:41,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725308641975309 [2023-01-28 00:47:41,421 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-01-28 00:47:41,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-01-28 00:47:41,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:41,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-01-28 00:47:41,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,424 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 288 flow. Second operand 4 states and 371 transitions. [2023-01-28 00:47:41,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 650 flow [2023-01-28 00:47:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:47:41,435 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 534 flow [2023-01-28 00:47:41,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=534, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-01-28 00:47:41,436 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-01-28 00:47:41,436 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 534 flow [2023-01-28 00:47:41,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:41,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:41,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:47:41,437 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 2 more)] === [2023-01-28 00:47:41,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1279001014, now seen corresponding path program 1 times [2023-01-28 00:47:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:41,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841400984] [2023-01-28 00:47:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:41,565 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 00:47:41,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841400984] [2023-01-28 00:47:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841400984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:41,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:41,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:41,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61618170] [2023-01-28 00:47:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:41,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:41,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:41,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:41,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:41,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:41,847 INFO L130 PetriNetUnfolder]: 1913/2858 cut-off events. [2023-01-28 00:47:41,847 INFO L131 PetriNetUnfolder]: For 10953/10953 co-relation queries the response was YES. [2023-01-28 00:47:41,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 2858 events. 1913/2858 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13572 event pairs, 446 based on Foata normal form. 36/2894 useless extension candidates. Maximal degree in co-relation 11212. Up to 1248 conditions per place. [2023-01-28 00:47:41,874 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 51 selfloop transitions, 26 changer transitions 3/80 dead transitions. [2023-01-28 00:47:41,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 813 flow [2023-01-28 00:47:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-01-28 00:47:41,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2023-01-28 00:47:41,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-01-28 00:47:41,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-01-28 00:47:41,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:41,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-01-28 00:47:41,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,879 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,879 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 534 flow. Second operand 4 states and 372 transitions. [2023-01-28 00:47:41,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 813 flow [2023-01-28 00:47:41,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 813 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:47:41,909 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 654 flow [2023-01-28 00:47:41,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=654, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-01-28 00:47:41,912 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-01-28 00:47:41,912 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 654 flow [2023-01-28 00:47:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:41,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:41,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:41,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:47:41,913 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 2 more)] === [2023-01-28 00:47:41,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash 561540036, now seen corresponding path program 1 times [2023-01-28 00:47:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160271344] [2023-01-28 00:47:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:42,079 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 00:47:42,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160271344] [2023-01-28 00:47:42,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160271344] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:42,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:42,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:42,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413650496] [2023-01-28 00:47:42,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:42,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:42,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:42,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-01-28 00:47:42,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:42,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-01-28 00:47:42,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:42,400 INFO L130 PetriNetUnfolder]: 2183/3389 cut-off events. [2023-01-28 00:47:42,400 INFO L131 PetriNetUnfolder]: For 17520/17575 co-relation queries the response was YES. [2023-01-28 00:47:42,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 3389 events. 2183/3389 cut-off events. For 17520/17575 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 18058 event pairs, 565 based on Foata normal form. 84/3427 useless extension candidates. Maximal degree in co-relation 13776. Up to 1548 conditions per place. [2023-01-28 00:47:42,420 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 48 selfloop transitions, 8 changer transitions 21/82 dead transitions. [2023-01-28 00:47:42,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 1046 flow [2023-01-28 00:47:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-01-28 00:47:42,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2023-01-28 00:47:42,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-01-28 00:47:42,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-01-28 00:47:42,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:42,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-01-28 00:47:42,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,424 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 654 flow. Second operand 4 states and 381 transitions. [2023-01-28 00:47:42,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 1046 flow [2023-01-28 00:47:42,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 1036 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-28 00:47:42,446 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 525 flow [2023-01-28 00:47:42,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-01-28 00:47:42,447 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-01-28 00:47:42,447 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 525 flow [2023-01-28 00:47:42,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:42,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:42,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:47:42,448 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 2 more)] === [2023-01-28 00:47:42,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1176329720, now seen corresponding path program 1 times [2023-01-28 00:47:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727211332] [2023-01-28 00:47:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:42,567 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 00:47:42,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:42,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727211332] [2023-01-28 00:47:42,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727211332] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:42,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:42,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:42,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43833949] [2023-01-28 00:47:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:42,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:42,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:42,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:42,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:42,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:42,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:42,792 INFO L130 PetriNetUnfolder]: 1459/2232 cut-off events. [2023-01-28 00:47:42,793 INFO L131 PetriNetUnfolder]: For 11216/11216 co-relation queries the response was YES. [2023-01-28 00:47:42,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9127 conditions, 2232 events. 1459/2232 cut-off events. For 11216/11216 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10739 event pairs, 356 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 9094. Up to 1124 conditions per place. [2023-01-28 00:47:42,806 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 42 selfloop transitions, 18 changer transitions 4/64 dead transitions. [2023-01-28 00:47:42,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 767 flow [2023-01-28 00:47:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-01-28 00:47:42,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632716049382716 [2023-01-28 00:47:42,808 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-01-28 00:47:42,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-01-28 00:47:42,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:42,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-01-28 00:47:42,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,810 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,810 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 525 flow. Second operand 4 states and 365 transitions. [2023-01-28 00:47:42,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 767 flow [2023-01-28 00:47:42,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 701 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-01-28 00:47:42,824 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 540 flow [2023-01-28 00:47:42,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-01-28 00:47:42,825 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-01-28 00:47:42,825 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 540 flow [2023-01-28 00:47:42,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:42,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:42,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:47:42,826 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 2 more)] === [2023-01-28 00:47:42,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash 542011896, now seen corresponding path program 2 times [2023-01-28 00:47:42,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:42,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917914701] [2023-01-28 00:47:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:42,940 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 00:47:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917914701] [2023-01-28 00:47:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917914701] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:42,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:47:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010367534] [2023-01-28 00:47:42,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:42,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:47:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:47:42,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:47:42,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 00:47:42,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:42,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:42,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 00:47:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:43,140 INFO L130 PetriNetUnfolder]: 1127/1853 cut-off events. [2023-01-28 00:47:43,140 INFO L131 PetriNetUnfolder]: For 11094/11200 co-relation queries the response was YES. [2023-01-28 00:47:43,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1853 events. 1127/1853 cut-off events. For 11094/11200 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10230 event pairs, 335 based on Foata normal form. 111/1930 useless extension candidates. Maximal degree in co-relation 7223. Up to 1213 conditions per place. [2023-01-28 00:47:43,150 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 66 selfloop transitions, 9 changer transitions 26/110 dead transitions. [2023-01-28 00:47:43,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 1562 flow [2023-01-28 00:47:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:47:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:47:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2023-01-28 00:47:43,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728395061728395 [2023-01-28 00:47:43,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2023-01-28 00:47:43,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2023-01-28 00:47:43,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:43,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2023-01-28 00:47:43,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,156 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,156 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 540 flow. Second operand 5 states and 464 transitions. [2023-01-28 00:47:43,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 1562 flow [2023-01-28 00:47:43,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 110 transitions, 1502 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 00:47:43,167 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 585 flow [2023-01-28 00:47:43,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-01-28 00:47:43,168 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2023-01-28 00:47:43,168 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 585 flow [2023-01-28 00:47:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:43,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:47:43,169 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 2 more)] === [2023-01-28 00:47:43,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 68625228, now seen corresponding path program 1 times [2023-01-28 00:47:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071456077] [2023-01-28 00:47:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:43,315 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 00:47:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071456077] [2023-01-28 00:47:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071456077] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:43,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689400813] [2023-01-28 00:47:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:47:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:47:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:47:43,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 00:47:43,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:43,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 00:47:43,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:43,548 INFO L130 PetriNetUnfolder]: 1076/1835 cut-off events. [2023-01-28 00:47:43,548 INFO L131 PetriNetUnfolder]: For 10006/10344 co-relation queries the response was YES. [2023-01-28 00:47:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9297 conditions, 1835 events. 1076/1835 cut-off events. For 10006/10344 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10774 event pairs, 83 based on Foata normal form. 166/1971 useless extension candidates. Maximal degree in co-relation 9260. Up to 1148 conditions per place. [2023-01-28 00:47:43,558 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 82 selfloop transitions, 17 changer transitions 36/144 dead transitions. [2023-01-28 00:47:43,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 144 transitions, 2035 flow [2023-01-28 00:47:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:47:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:47:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2023-01-28 00:47:43,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-01-28 00:47:43,560 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2023-01-28 00:47:43,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2023-01-28 00:47:43,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:43,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2023-01-28 00:47:43,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,564 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 585 flow. Second operand 7 states and 648 transitions. [2023-01-28 00:47:43,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 144 transitions, 2035 flow [2023-01-28 00:47:43,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 144 transitions, 1962 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:47:43,575 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 680 flow [2023-01-28 00:47:43,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-01-28 00:47:43,576 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2023-01-28 00:47:43,576 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 680 flow [2023-01-28 00:47:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:43,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:43,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:47:43,577 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 2 more)] === [2023-01-28 00:47:43,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1838314156, now seen corresponding path program 1 times [2023-01-28 00:47:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11729184] [2023-01-28 00:47:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:43,702 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 00:47:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11729184] [2023-01-28 00:47:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11729184] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:47:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851034058] [2023-01-28 00:47:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:43,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:47:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:47:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:47:43,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 00:47:43,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:43,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 00:47:43,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:43,957 INFO L130 PetriNetUnfolder]: 943/1669 cut-off events. [2023-01-28 00:47:43,957 INFO L131 PetriNetUnfolder]: For 9413/9990 co-relation queries the response was YES. [2023-01-28 00:47:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 1669 events. 943/1669 cut-off events. For 9413/9990 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10087 event pairs, 24 based on Foata normal form. 192/1833 useless extension candidates. Maximal degree in co-relation 10169. Up to 1021 conditions per place. [2023-01-28 00:47:43,967 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 72 selfloop transitions, 13 changer transitions 75/168 dead transitions. [2023-01-28 00:47:43,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 168 transitions, 2351 flow [2023-01-28 00:47:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 00:47:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 00:47:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 832 transitions. [2023-01-28 00:47:43,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706447187928669 [2023-01-28 00:47:43,970 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 832 transitions. [2023-01-28 00:47:43,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 832 transitions. [2023-01-28 00:47:43,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:43,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 832 transitions. [2023-01-28 00:47:43,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.44444444444444) internal successors, (832), 9 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,975 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:43,975 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 680 flow. Second operand 9 states and 832 transitions. [2023-01-28 00:47:43,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 168 transitions, 2351 flow [2023-01-28 00:47:44,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 168 transitions, 2306 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-01-28 00:47:44,012 INFO L231 Difference]: Finished difference. Result has 80 places, 53 transitions, 669 flow [2023-01-28 00:47:44,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2023-01-28 00:47:44,013 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2023-01-28 00:47:44,013 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 669 flow [2023-01-28 00:47:44,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:44,014 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 00:47:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:47:44,014 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 2 more)] === [2023-01-28 00:47:44,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1510454651, now seen corresponding path program 1 times [2023-01-28 00:47:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:44,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291049658] [2023-01-28 00:47:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:44,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:44,169 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 00:47:44,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:44,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291049658] [2023-01-28 00:47:44,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291049658] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:44,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:44,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:47:44,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677119910] [2023-01-28 00:47:44,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:44,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:47:44,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:47:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:47:44,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:44,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 669 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:44,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:44,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:44,325 INFO L130 PetriNetUnfolder]: 569/1004 cut-off events. [2023-01-28 00:47:44,326 INFO L131 PetriNetUnfolder]: For 8555/8555 co-relation queries the response was YES. [2023-01-28 00:47:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6299 conditions, 1004 events. 569/1004 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4798 event pairs, 63 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 6256. Up to 468 conditions per place. [2023-01-28 00:47:44,332 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 53 selfloop transitions, 16 changer transitions 65/134 dead transitions. [2023-01-28 00:47:44,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 1723 flow [2023-01-28 00:47:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:47:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:47:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-01-28 00:47:44,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565843621399177 [2023-01-28 00:47:44,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-01-28 00:47:44,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-01-28 00:47:44,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:44,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-01-28 00:47:44,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,337 INFO L175 Difference]: Start difference. First operand has 80 places, 53 transitions, 669 flow. Second operand 6 states and 541 transitions. [2023-01-28 00:47:44,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 1723 flow [2023-01-28 00:47:44,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 1395 flow, removed 118 selfloop flow, removed 9 redundant places. [2023-01-28 00:47:44,366 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 532 flow [2023-01-28 00:47:44,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-01-28 00:47:44,368 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-01-28 00:47:44,368 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 532 flow [2023-01-28 00:47:44,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:44,368 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 00:47:44,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 00:47:44,369 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 2 more)] === [2023-01-28 00:47:44,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash 625563137, now seen corresponding path program 2 times [2023-01-28 00:47:44,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:44,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918485037] [2023-01-28 00:47:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:44,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:44,548 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 00:47:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918485037] [2023-01-28 00:47:44,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918485037] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:44,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:44,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:47:44,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367169539] [2023-01-28 00:47:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:44,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:47:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:47:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:47:44,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 00:47:44,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:44,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 00:47:44,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:44,659 INFO L130 PetriNetUnfolder]: 225/431 cut-off events. [2023-01-28 00:47:44,659 INFO L131 PetriNetUnfolder]: For 2535/2640 co-relation queries the response was YES. [2023-01-28 00:47:44,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 431 events. 225/431 cut-off events. For 2535/2640 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1871 event pairs, 12 based on Foata normal form. 55/476 useless extension candidates. Maximal degree in co-relation 2217. Up to 140 conditions per place. [2023-01-28 00:47:44,661 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 21 selfloop transitions, 17 changer transitions 45/85 dead transitions. [2023-01-28 00:47:44,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 1116 flow [2023-01-28 00:47:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 00:47:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 00:47:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 721 transitions. [2023-01-28 00:47:44,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563271604938271 [2023-01-28 00:47:44,664 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 721 transitions. [2023-01-28 00:47:44,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 721 transitions. [2023-01-28 00:47:44,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:44,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 721 transitions. [2023-01-28 00:47:44,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.125) internal successors, (721), 8 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,668 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,668 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 532 flow. Second operand 8 states and 721 transitions. [2023-01-28 00:47:44,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 1116 flow [2023-01-28 00:47:44,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 971 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 00:47:44,677 INFO L231 Difference]: Finished difference. Result has 70 places, 32 transitions, 296 flow [2023-01-28 00:47:44,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=70, PETRI_TRANSITIONS=32} [2023-01-28 00:47:44,677 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-01-28 00:47:44,677 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 32 transitions, 296 flow [2023-01-28 00:47:44,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:44,678 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 00:47:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 00:47:44,678 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 2 more)] === [2023-01-28 00:47:44,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash 406969096, now seen corresponding path program 1 times [2023-01-28 00:47:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547809347] [2023-01-28 00:47:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:44,801 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 00:47:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547809347] [2023-01-28 00:47:44,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547809347] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:44,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:44,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:47:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348099778] [2023-01-28 00:47:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:47:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:47:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:47:44,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 00:47:44,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 32 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:44,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 00:47:44,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:44,834 INFO L130 PetriNetUnfolder]: 44/94 cut-off events. [2023-01-28 00:47:44,834 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-01-28 00:47:44,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 94 events. 44/94 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 542. Up to 57 conditions per place. [2023-01-28 00:47:44,835 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-01-28 00:47:44,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 35 transitions, 380 flow [2023-01-28 00:47:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:47:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:47:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-01-28 00:47:44,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-01-28 00:47:44,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-01-28 00:47:44,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-01-28 00:47:44,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:44,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-01-28 00:47:44,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,839 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,839 INFO L175 Difference]: Start difference. First operand has 70 places, 32 transitions, 296 flow. Second operand 4 states and 342 transitions. [2023-01-28 00:47:44,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 35 transitions, 380 flow [2023-01-28 00:47:44,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 240 flow, removed 17 selfloop flow, removed 26 redundant places. [2023-01-28 00:47:44,841 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-28 00:47:44,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-28 00:47:44,841 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-01-28 00:47:44,841 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-28 00:47:44,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:47:44,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 00:47:44,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 00:47:44,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 00:47:44,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 00:47:44,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 00:47:44,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 00:47:44,845 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:47:44,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:47:44,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:47:44,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:47:44 BasicIcfg [2023-01-28 00:47:44,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:47:44,850 INFO L158 Benchmark]: Toolchain (without parser) took 9711.14ms. Allocated memory was 373.3MB in the beginning and 729.8MB in the end (delta: 356.5MB). Free memory was 311.2MB in the beginning and 556.4MB in the end (delta: -245.2MB). Peak memory consumption was 113.4MB. Max. memory is 16.0GB. [2023-01-28 00:47:44,850 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory was 321.9MB in the beginning and 321.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:47:44,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.62ms. Allocated memory is still 373.3MB. Free memory was 310.9MB in the beginning and 290.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:47:44,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.42ms. Allocated memory is still 373.3MB. Free memory was 290.5MB in the beginning and 288.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:47:44,851 INFO L158 Benchmark]: Boogie Preprocessor took 60.42ms. Allocated memory was 373.3MB in the beginning and 595.6MB in the end (delta: 222.3MB). Free memory was 288.4MB in the beginning and 561.1MB in the end (delta: -272.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.0GB. [2023-01-28 00:47:44,851 INFO L158 Benchmark]: RCFGBuilder took 375.11ms. Allocated memory is still 595.6MB. Free memory was 561.1MB in the beginning and 546.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 00:47:44,851 INFO L158 Benchmark]: TraceAbstraction took 8725.42ms. Allocated memory was 595.6MB in the beginning and 729.8MB in the end (delta: 134.2MB). Free memory was 545.6MB in the beginning and 556.4MB in the end (delta: -10.8MB). Peak memory consumption was 122.2MB. Max. memory is 16.0GB. [2023-01-28 00:47:44,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 373.3MB. Free memory was 321.9MB in the beginning and 321.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 486.62ms. Allocated memory is still 373.3MB. Free memory was 310.9MB in the beginning and 290.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.42ms. Allocated memory is still 373.3MB. Free memory was 290.5MB in the beginning and 288.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.42ms. Allocated memory was 373.3MB in the beginning and 595.6MB in the end (delta: 222.3MB). Free memory was 288.4MB in the beginning and 561.1MB in the end (delta: -272.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.0GB. * RCFGBuilder took 375.11ms. Allocated memory is still 595.6MB. Free memory was 561.1MB in the beginning and 546.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8725.42ms. Allocated memory was 595.6MB in the beginning and 729.8MB in the end (delta: 134.2MB). Free memory was 545.6MB in the beginning and 556.4MB in the end (delta: -10.8MB). Peak memory consumption was 122.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 92 PlacesBefore, 33 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2424 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1169, independent conditional: 0, independent unconditional: 1169, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 797, independent: 773, independent conditional: 0, independent unconditional: 773, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 127 locations, 5 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: 8.6s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 314 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 868 IncrementalHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 24 mSDtfsCounter, 868 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=680occurred in iteration=10, InterpolantAutomatonStates: 69, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 00:47:44,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...