/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:02:47,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:02:47,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:02:47,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:02:47,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:02:47,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:02:47,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:02:47,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:02:47,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:02:47,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:02:47,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:02:47,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:02:47,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:02:47,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:02:47,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:02:47,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:02:47,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:02:47,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:02:47,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:02:47,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:02:47,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:02:47,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:02:47,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:02:47,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:02:47,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:02:47,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:02:47,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:02:47,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:02:47,223 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 [2023-01-27 19:02:47,255 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:02:47,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:02:47,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:02:47,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:02:47,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:02:47,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:02:47,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:02:47,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:02:47,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:02:47,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:02:47,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:02:47,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:02:47,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:02:47,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:02:47,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:02:47,473 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:02:47,474 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:02:47,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2023-01-27 19:02:48,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:02:48,784 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:02:48,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2023-01-27 19:02:48,800 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe2cc4e2/1b1cd7e78c254dbcbf1be76f3b8ac1a1/FLAG1dc14197e [2023-01-27 19:02:48,810 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe2cc4e2/1b1cd7e78c254dbcbf1be76f3b8ac1a1 [2023-01-27 19:02:48,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:02:48,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:02:48,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:02:48,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:02:48,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:02:48,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:02:48" (1/1) ... [2023-01-27 19:02:48,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f4f01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:48, skipping insertion in model container [2023-01-27 19:02:48,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:02:48" (1/1) ... [2023-01-27 19:02:48,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:02:48,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:02:48,985 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_30-traces-oplus-vs-meet_true.i[1097,1110] [2023-01-27 19:02:49,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:02:49,113 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:02:49,125 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_30-traces-oplus-vs-meet_true.i[1097,1110] [2023-01-27 19:02:49,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:02:49,210 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:02:49,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49 WrapperNode [2023-01-27 19:02:49,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:02:49,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:02:49,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:02:49,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:02:49,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,251 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-01-27 19:02:49,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:02:49,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:02:49,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:02:49,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:02:49,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,286 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:02:49,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:02:49,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:02:49,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:02:49,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (1/1) ... [2023-01-27 19:02:49,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:02:49,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:02:49,322 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) [2023-01-27 19:02:49,324 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 [2023-01-27 19:02:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:02:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:02:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:02:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:02:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:02:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-27 19:02:49,355 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-27 19:02:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:02:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:02:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:02:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:02:49,358 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:02:49,520 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:02:49,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:02:49,707 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:02:49,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:02:49,730 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 19:02:49,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:02:49 BoogieIcfgContainer [2023-01-27 19:02:49,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:02:49,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:02:49,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:02:49,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:02:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:02:48" (1/3) ... [2023-01-27 19:02:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d907916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:02:49, skipping insertion in model container [2023-01-27 19:02:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:49" (2/3) ... [2023-01-27 19:02:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d907916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:02:49, skipping insertion in model container [2023-01-27 19:02:49,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:02:49" (3/3) ... [2023-01-27 19:02:49,741 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_30-traces-oplus-vs-meet_true.i [2023-01-27 19:02:49,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:02:49,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 19:02:49,756 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:02:49,827 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-27 19:02:49,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 160 flow [2023-01-27 19:02:49,920 INFO L130 PetriNetUnfolder]: 2/75 cut-off events. [2023-01-27 19:02:49,920 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 19:02:49,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 2/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-01-27 19:02:49,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 76 transitions, 160 flow [2023-01-27 19:02:49,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 62 transitions, 127 flow [2023-01-27 19:02:49,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:02:49,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 62 transitions, 127 flow [2023-01-27 19:02:49,946 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 62 transitions, 127 flow [2023-01-27 19:02:49,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 127 flow [2023-01-27 19:02:49,960 INFO L130 PetriNetUnfolder]: 1/62 cut-off events. [2023-01-27 19:02:49,964 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:49,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-01-27 19:02:49,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-01-27 19:02:52,338 INFO L134 LiptonReduction]: Checked pairs total: 757 [2023-01-27 19:02:52,339 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-01-27 19:02:52,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:02:52,355 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;@420841eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:02:52,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 19:02:52,356 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 19:02:52,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:52,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:52,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 19:02:52,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:02:52,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash 265, now seen corresponding path program 1 times [2023-01-27 19:02:52,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728023520] [2023-01-27 19:02:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:02:52,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728023520] [2023-01-27 19:02:52,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728023520] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:52,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:52,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 19:02:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129838879] [2023-01-27 19:02:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:52,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 19:02:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:52,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 19:02:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 19:02:52,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 133 [2023-01-27 19:02:52,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:52,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 133 [2023-01-27 19:02:52,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:52,542 INFO L130 PetriNetUnfolder]: 12/41 cut-off events. [2023-01-27 19:02:52,542 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:52,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 41 events. 12/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 12 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 70. Up to 34 conditions per place. [2023-01-27 19:02:52,543 INFO L137 encePairwiseOnDemand]: 132/133 looper letters, 9 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-01-27 19:02:52,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 47 flow [2023-01-27 19:02:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 19:02:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 19:02:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2023-01-27 19:02:52,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639097744360902 [2023-01-27 19:02:52,555 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 150 transitions. [2023-01-27 19:02:52,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 150 transitions. [2023-01-27 19:02:52,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:52,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 150 transitions. [2023-01-27 19:02:52,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,564 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,565 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 31 flow. Second operand 2 states and 150 transitions. [2023-01-27 19:02:52,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 47 flow [2023-01-27 19:02:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:02:52,568 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 28 flow [2023-01-27 19:02:52,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-01-27 19:02:52,573 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-27 19:02:52,573 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 28 flow [2023-01-27 19:02:52,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:52,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-27 19:02:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:02:52,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:02:52,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 251140274, now seen corresponding path program 1 times [2023-01-27 19:02:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203565421] [2023-01-27 19:02:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:02:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:52,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203565421] [2023-01-27 19:02:52,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203565421] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:52,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:52,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:02:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023882875] [2023-01-27 19:02:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:52,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:02:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:02:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:02:52,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2023-01-27 19:02:52,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:52,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2023-01-27 19:02:52,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:52,821 INFO L130 PetriNetUnfolder]: 13/46 cut-off events. [2023-01-27 19:02:52,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:52,822 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 88 event pairs, 9 based on Foata normal form. 5/51 useless extension candidates. Maximal degree in co-relation 87. Up to 26 conditions per place. [2023-01-27 19:02:52,822 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-01-27 19:02:52,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 58 flow [2023-01-27 19:02:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:02:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:02:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-01-27 19:02:52,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-01-27 19:02:52,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-01-27 19:02:52,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-01-27 19:02:52,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:52,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-01-27 19:02:52,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,829 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 28 flow. Second operand 3 states and 209 transitions. [2023-01-27 19:02:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 58 flow [2023-01-27 19:02:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:02:52,830 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 39 flow [2023-01-27 19:02:52,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, 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=20, PETRI_TRANSITIONS=13} [2023-01-27 19:02:52,831 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-01-27 19:02:52,831 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 39 flow [2023-01-27 19:02:52,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:52,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:52,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:52,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:02:52,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:02:52,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -746865442, now seen corresponding path program 1 times [2023-01-27 19:02:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103392816] [2023-01-27 19:02:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:02:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103392816] [2023-01-27 19:02:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103392816] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:02:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987670166] [2023-01-27 19:02:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:52,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:02:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:02:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:02:52,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 133 [2023-01-27 19:02:52,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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) [2023-01-27 19:02:52,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:52,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 133 [2023-01-27 19:02:52,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:53,008 INFO L130 PetriNetUnfolder]: 3/26 cut-off events. [2023-01-27 19:02:53,008 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 19:02:53,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 26 events. 3/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 7/33 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2023-01-27 19:02:53,009 INFO L137 encePairwiseOnDemand]: 127/133 looper letters, 5 selfloop transitions, 3 changer transitions 7/16 dead transitions. [2023-01-27 19:02:53,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 73 flow [2023-01-27 19:02:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:02:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:02:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2023-01-27 19:02:53,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44862155388471175 [2023-01-27 19:02:53,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2023-01-27 19:02:53,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2023-01-27 19:02:53,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:53,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2023-01-27 19:02:53,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-01-27 19:02:53,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,017 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 39 flow. Second operand 3 states and 179 transitions. [2023-01-27 19:02:53,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 73 flow [2023-01-27 19:02:53,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:02:53,018 INFO L231 Difference]: Finished difference. Result has 20 places, 9 transitions, 30 flow [2023-01-27 19:02:53,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=30, PETRI_PLACES=20, PETRI_TRANSITIONS=9} [2023-01-27 19:02:53,019 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-01-27 19:02:53,019 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 9 transitions, 30 flow [2023-01-27 19:02:53,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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) [2023-01-27 19:02:53,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:53,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:53,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:02:53,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:02:53,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:53,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1831789634, now seen corresponding path program 1 times [2023-01-27 19:02:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060613676] [2023-01-27 19:02:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:02:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060613676] [2023-01-27 19:02:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060613676] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:02:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044909962] [2023-01-27 19:02:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:02:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:02:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:02:53,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 133 [2023-01-27 19:02:53,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 9 transitions, 30 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:53,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 133 [2023-01-27 19:02:53,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:53,261 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-01-27 19:02:53,261 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 19:02:53,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 11 events. 1/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 3/14 useless extension candidates. Maximal degree in co-relation 29. Up to 7 conditions per place. [2023-01-27 19:02:53,262 INFO L137 encePairwiseOnDemand]: 130/133 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-01-27 19:02:53,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 46 flow [2023-01-27 19:02:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:02:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:02:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2023-01-27 19:02:53,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37969924812030076 [2023-01-27 19:02:53,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 202 transitions. [2023-01-27 19:02:53,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 202 transitions. [2023-01-27 19:02:53,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:53,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 202 transitions. [2023-01-27 19:02:53,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,269 INFO L175 Difference]: Start difference. First operand has 20 places, 9 transitions, 30 flow. Second operand 4 states and 202 transitions. [2023-01-27 19:02:53,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 46 flow [2023-01-27 19:02:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:02:53,269 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-01-27 19:02:53,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=21, 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} [2023-01-27 19:02:53,270 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-01-27 19:02:53,270 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-01-27 19:02:53,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:02:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 19:02:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-01-27 19:02:53,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 19:02:53,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 19:02:53,273 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-01-27 19:02:53,276 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:02:53,276 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:02:53,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:02:53 BasicIcfg [2023-01-27 19:02:53,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:02:53,280 INFO L158 Benchmark]: Toolchain (without parser) took 4466.52ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 312.5MB in the beginning and 327.6MB in the end (delta: -15.1MB). Peak memory consumption was 58.1MB. Max. memory is 16.0GB. [2023-01-27 19:02:53,280 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:02:53,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.99ms. Allocated memory is still 354.4MB. Free memory was 312.5MB in the beginning and 293.5MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 19:02:53,285 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.23ms. Allocated memory is still 354.4MB. Free memory was 293.5MB in the beginning and 291.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:02:53,288 INFO L158 Benchmark]: Boogie Preprocessor took 36.17ms. Allocated memory is still 354.4MB. Free memory was 291.7MB in the beginning and 290.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:02:53,290 INFO L158 Benchmark]: RCFGBuilder took 443.45ms. Allocated memory is still 354.4MB. Free memory was 290.3MB in the beginning and 277.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 19:02:53,293 INFO L158 Benchmark]: TraceAbstraction took 3544.09ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 276.3MB in the beginning and 327.6MB in the end (delta: -51.3MB). Peak memory consumption was 20.4MB. Max. memory is 16.0GB. [2023-01-27 19:02:53,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 397.99ms. Allocated memory is still 354.4MB. Free memory was 312.5MB in the beginning and 293.5MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.23ms. Allocated memory is still 354.4MB. Free memory was 293.5MB in the beginning and 291.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.17ms. Allocated memory is still 354.4MB. Free memory was 291.7MB in the beginning and 290.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 443.45ms. Allocated memory is still 354.4MB. Free memory was 290.3MB in the beginning and 277.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3544.09ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 276.3MB in the beginning and 327.6MB in the end (delta: -51.3MB). Peak memory consumption was 20.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 65 PlacesBefore, 18 PlacesAfterwards, 62 TransitionsBefore, 14 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 757 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 354, independent: 239, independent conditional: 0, independent unconditional: 239, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 164, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 354, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 164, unknown conditional: 0, unknown unconditional: 164] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, 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 - 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, 91 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 2 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 115 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 19:02:53,318 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...