/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/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:28:17,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:28:17,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:28:17,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:28:17,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:28:17,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:28:17,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:28:17,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:28:17,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:28:17,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:28:17,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:28:18,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:28:18,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:28:18,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:28:18,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:28:18,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:28:18,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:28:18,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:28:18,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:28:18,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:28:18,018 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 01:28:18,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:28:18,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:28:18,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:28:18,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:28:18,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:28:18,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:28:18,038 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:28:18,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:28:18,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:28:18,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:28:18,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:28:18,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:28:18,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:28:18,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:28:18,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:28:18,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:28:18,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:28:18,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:28:18,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:28:18,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:28:18,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:28:18,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:28:18,269 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:28:18,270 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:28:18,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i [2023-01-28 01:28:19,425 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:28:19,661 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:28:19,661 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i [2023-01-28 01:28:19,670 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50a38291b/8a9b53f21f424856b047dc9b979d1d39/FLAG310261060 [2023-01-28 01:28:19,682 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50a38291b/8a9b53f21f424856b047dc9b979d1d39 [2023-01-28 01:28:19,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:28:19,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:28:19,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:28:19,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:28:19,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:28:19,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:28:19" (1/1) ... [2023-01-28 01:28:19,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f2a414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:19, skipping insertion in model container [2023-01-28 01:28:19,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:28:19" (1/1) ... [2023-01-28 01:28:19,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:28:19,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:28:19,845 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i[1095,1108] [2023-01-28 01:28:19,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:28:20,000 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:28:20,013 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_38-traces-ex-4-switch_true.i[1095,1108] [2023-01-28 01:28:20,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:28:20,084 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:28:20,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20 WrapperNode [2023-01-28 01:28:20,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:28:20,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:28:20,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:28:20,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:28:20,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,138 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-01-28 01:28:20,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:28:20,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:28:20,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:28:20,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:28:20,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:28:20,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:28:20,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:28:20,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:28:20,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (1/1) ... [2023-01-28 01:28:20,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:28:20,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:28:20,206 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 01:28:20,228 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 01:28:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:28:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:28:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:28:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:28:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:28:20,243 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:28:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:28:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:28:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:28:20,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:28:20,244 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 01:28:20,358 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:28:20,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:28:20,492 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:28:20,498 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:28:20,498 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 01:28:20,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:28:20 BoogieIcfgContainer [2023-01-28 01:28:20,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:28:20,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:28:20,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:28:20,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:28:20,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:28:19" (1/3) ... [2023-01-28 01:28:20,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb7cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:28:20, skipping insertion in model container [2023-01-28 01:28:20,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:20" (2/3) ... [2023-01-28 01:28:20,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb7cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:28:20, skipping insertion in model container [2023-01-28 01:28:20,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:28:20" (3/3) ... [2023-01-28 01:28:20,509 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_38-traces-ex-4-switch_true.i [2023-01-28 01:28:20,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:28:20,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:28:20,524 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:28:20,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:28:20,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 135 flow [2023-01-28 01:28:20,665 INFO L130 PetriNetUnfolder]: 1/64 cut-off events. [2023-01-28 01:28:20,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:20,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 1/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-01-28 01:28:20,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 135 flow [2023-01-28 01:28:20,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 111 flow [2023-01-28 01:28:20,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:28:20,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 54 transitions, 111 flow [2023-01-28 01:28:20,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 54 transitions, 111 flow [2023-01-28 01:28:20,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 54 transitions, 111 flow [2023-01-28 01:28:20,700 INFO L130 PetriNetUnfolder]: 0/54 cut-off events. [2023-01-28 01:28:20,700 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:20,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 0/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-01-28 01:28:20,702 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-01-28 01:28:22,668 INFO L134 LiptonReduction]: Checked pairs total: 763 [2023-01-28 01:28:22,668 INFO L136 LiptonReduction]: Total number of compositions: 41 [2023-01-28 01:28:22,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 01:28:22,686 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;@3bccfec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:28:22,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:28:22,689 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-01-28 01:28:22,689 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:22,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:28:22,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 01:28:22,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:28:22,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:28:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 209666579, now seen corresponding path program 1 times [2023-01-28 01:28:22,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:28:22,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837963133] [2023-01-28 01:28:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:28:22,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:28:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:28:23,001 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 01:28:23,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:28:23,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837963133] [2023-01-28 01:28:23,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837963133] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:28:23,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:28:23,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 01:28:23,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381015763] [2023-01-28 01:28:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:28:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:28:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:28:23,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:28:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:28:23,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 106 [2023-01-28 01:28:23,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:28:23,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 106 [2023-01-28 01:28:23,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:28:23,108 INFO L130 PetriNetUnfolder]: 13/46 cut-off events. [2023-01-28 01:28:23,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 46 events. 13/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 9 based on Foata normal form. 5/51 useless extension candidates. Maximal degree in co-relation 81. Up to 26 conditions per place. [2023-01-28 01:28:23,112 INFO L137 encePairwiseOnDemand]: 102/106 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-01-28 01:28:23,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 59 flow [2023-01-28 01:28:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:28:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:28:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-01-28 01:28:23,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911949685534591 [2023-01-28 01:28:23,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-01-28 01:28:23,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-01-28 01:28:23,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:28:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-01-28 01:28:23,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,138 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 29 flow. Second operand 3 states and 188 transitions. [2023-01-28 01:28:23,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 59 flow [2023-01-28 01:28:23,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:28:23,141 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 39 flow [2023-01-28 01:28:23,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-01-28 01:28:23,150 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2023-01-28 01:28:23,150 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 39 flow [2023-01-28 01:28:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:28:23,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:28:23,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:28:23,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:28:23,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:28:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1292186529, now seen corresponding path program 1 times [2023-01-28 01:28:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:28:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696035153] [2023-01-28 01:28:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:28:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:28:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:28:23,226 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 01:28:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:28:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696035153] [2023-01-28 01:28:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696035153] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:28:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:28:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:28:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633703582] [2023-01-28 01:28:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:28:23,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:28:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:28:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:28:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:28:23,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 106 [2023-01-28 01:28:23,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:28:23,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 106 [2023-01-28 01:28:23,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:28:23,278 INFO L130 PetriNetUnfolder]: 9/40 cut-off events. [2023-01-28 01:28:23,279 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:28:23,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 40 events. 9/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 4 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 80. Up to 21 conditions per place. [2023-01-28 01:28:23,279 INFO L137 encePairwiseOnDemand]: 101/106 looper letters, 9 selfloop transitions, 4 changer transitions 2/17 dead transitions. [2023-01-28 01:28:23,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 77 flow [2023-01-28 01:28:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:28:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:28:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-01-28 01:28:23,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742138364779874 [2023-01-28 01:28:23,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-01-28 01:28:23,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-01-28 01:28:23,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:28:23,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-01-28 01:28:23,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,296 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 39 flow. Second operand 3 states and 155 transitions. [2023-01-28 01:28:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 77 flow [2023-01-28 01:28:23,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 01:28:23,297 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 47 flow [2023-01-28 01:28:23,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-01-28 01:28:23,298 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-01-28 01:28:23,298 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 47 flow [2023-01-28 01:28:23,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:28:23,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:28:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:28:23,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:28:23,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:28:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1413146466, now seen corresponding path program 1 times [2023-01-28 01:28:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:28:23,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549238834] [2023-01-28 01:28:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:28:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:28:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:28:23,535 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 01:28:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:28:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549238834] [2023-01-28 01:28:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549238834] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:28:23,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:28:23,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:28:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214359404] [2023-01-28 01:28:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:28:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 01:28:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:28:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 01:28:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 01:28:23,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 106 [2023-01-28 01:28:23,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:28:23,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 106 [2023-01-28 01:28:23,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:28:23,558 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-01-28 01:28:23,559 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 01:28:23,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 15 events. 1/15 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 6/21 useless extension candidates. Maximal degree in co-relation 32. Up to 9 conditions per place. [2023-01-28 01:28:23,561 INFO L137 encePairwiseOnDemand]: 101/106 looper letters, 4 selfloop transitions, 4 changer transitions 3/12 dead transitions. [2023-01-28 01:28:23,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 63 flow [2023-01-28 01:28:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 01:28:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 01:28:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2023-01-28 01:28:23,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080188679245283 [2023-01-28 01:28:23,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 173 transitions. [2023-01-28 01:28:23,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 173 transitions. [2023-01-28 01:28:23,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:28:23,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 173 transitions. [2023-01-28 01:28:23,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,568 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,568 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 47 flow. Second operand 4 states and 173 transitions. [2023-01-28 01:28:23,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 63 flow [2023-01-28 01:28:23,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 01:28:23,569 INFO L231 Difference]: Finished difference. Result has 19 places, 9 transitions, 35 flow [2023-01-28 01:28:23,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=35, PETRI_PLACES=19, PETRI_TRANSITIONS=9} [2023-01-28 01:28:23,569 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2023-01-28 01:28:23,570 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 9 transitions, 35 flow [2023-01-28 01:28:23,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:28:23,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:28:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:28:23,570 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:28:23,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:28:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1307544156, now seen corresponding path program 2 times [2023-01-28 01:28:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:28:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525105875] [2023-01-28 01:28:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:28:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:28:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:28:23,749 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 01:28:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:28:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525105875] [2023-01-28 01:28:23,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525105875] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:28:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:28:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 01:28:23,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422370012] [2023-01-28 01:28:23,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:28:23,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 01:28:23,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:28:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 01:28:23,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 01:28:23,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 106 [2023-01-28 01:28:23,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 9 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:28:23,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 106 [2023-01-28 01:28:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:28:23,776 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-01-28 01:28:23,777 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:28:23,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 11 events. 1/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 24. Up to 7 conditions per place. [2023-01-28 01:28:23,777 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-01-28 01:28:23,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 51 flow [2023-01-28 01:28:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 01:28:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 01:28:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2023-01-28 01:28:23,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39858490566037735 [2023-01-28 01:28:23,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2023-01-28 01:28:23,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2023-01-28 01:28:23,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:28:23,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2023-01-28 01:28:23,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,788 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,789 INFO L175 Difference]: Start difference. First operand has 19 places, 9 transitions, 35 flow. Second operand 4 states and 169 transitions. [2023-01-28 01:28:23,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 51 flow [2023-01-28 01:28:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 01:28:23,792 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-01-28 01:28:23,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-01-28 01:28:23,798 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-01-28 01:28:23,799 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-01-28 01:28:23,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:23,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 01:28:23,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:28:23,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:28:23,802 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-01-28 01:28:23,809 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 01:28:23,810 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 01:28:23,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 01:28:23 BasicIcfg [2023-01-28 01:28:23,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 01:28:23,818 INFO L158 Benchmark]: Toolchain (without parser) took 4132.29ms. Allocated memory was 333.4MB in the beginning and 400.6MB in the end (delta: 67.1MB). Free memory was 291.3MB in the beginning and 321.3MB in the end (delta: -29.9MB). Peak memory consumption was 38.6MB. Max. memory is 16.0GB. [2023-01-28 01:28:23,819 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 255.9MB. Free memory is still 214.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:28:23,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.96ms. Allocated memory is still 333.4MB. Free memory was 291.0MB in the beginning and 272.3MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 01:28:23,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.01ms. Allocated memory is still 333.4MB. Free memory was 272.3MB in the beginning and 270.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:28:23,820 INFO L158 Benchmark]: Boogie Preprocessor took 31.06ms. Allocated memory is still 333.4MB. Free memory was 270.2MB in the beginning and 269.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:28:23,823 INFO L158 Benchmark]: RCFGBuilder took 329.68ms. Allocated memory is still 333.4MB. Free memory was 269.1MB in the beginning and 256.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 01:28:23,825 INFO L158 Benchmark]: TraceAbstraction took 3314.73ms. Allocated memory was 333.4MB in the beginning and 400.6MB in the end (delta: 67.1MB). Free memory was 255.5MB in the beginning and 321.3MB in the end (delta: -65.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.0GB. [2023-01-28 01:28:23,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 255.9MB. Free memory is still 214.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 399.96ms. Allocated memory is still 333.4MB. Free memory was 291.0MB in the beginning and 272.3MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.01ms. Allocated memory is still 333.4MB. Free memory was 272.3MB in the beginning and 270.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.06ms. Allocated memory is still 333.4MB. Free memory was 270.2MB in the beginning and 269.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 329.68ms. Allocated memory is still 333.4MB. Free memory was 269.1MB in the beginning and 256.2MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3314.73ms. Allocated memory was 333.4MB in the beginning and 400.6MB in the end (delta: 67.1MB). Free memory was 255.5MB in the beginning and 321.3MB in the end (delta: -65.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 58 PlacesBefore, 17 PlacesAfterwards, 54 TransitionsBefore, 13 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 763 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 350, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 166, independent: 143, independent conditional: 0, independent unconditional: 143, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 350, independent: 91, independent conditional: 0, independent unconditional: 91, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 166, unknown conditional: 0, unknown unconditional: 166] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: 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 3 procedures, 81 locations, 2 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: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 3 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 01:28:23,853 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...