/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_46-refine-protected1_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:28:36,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:28:36,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:28:36,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:28:36,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:28:36,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:28:36,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:28:36,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:28:36,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:28:36,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:28:36,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:28:36,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:28:36,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:28:36,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:28:36,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:28:36,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:28:36,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:28:36,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:28:36,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:28:36,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:28:36,395 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 01:28:36,424 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:28:36,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:28:36,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:28:36,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:28:36,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:28:36,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:28:36,426 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:28:36,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:28:36,426 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:28:36,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:28:36,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:28:36,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:28:36,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:28:36,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:28:36,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:28:36,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:28:36,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:28:36,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:28:36,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:28:36,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:28:36,647 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:28:36,648 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:28:36,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_46-refine-protected1_true.i [2023-01-28 01:28:37,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:28:38,066 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:28:38,067 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_46-refine-protected1_true.i [2023-01-28 01:28:38,078 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc5555fd/ff37958a8c6c4df2bbafe52281017772/FLAGe04ae6086 [2023-01-28 01:28:38,088 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dc5555fd/ff37958a8c6c4df2bbafe52281017772 [2023-01-28 01:28:38,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:28:38,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:28:38,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:28:38,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:28:38,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:28:38,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723db37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38, skipping insertion in model container [2023-01-28 01:28:38,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:28:38,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:28:38,242 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_46-refine-protected1_true.i[1094,1107] [2023-01-28 01:28:38,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:28:38,356 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:28:38,366 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_46-refine-protected1_true.i[1094,1107] [2023-01-28 01:28:38,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:28:38,424 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:28:38,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38 WrapperNode [2023-01-28 01:28:38,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:28:38,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:28:38,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:28:38,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:28:38,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,469 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2023-01-28 01:28:38,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:28:38,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:28:38,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:28:38,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:28:38,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,501 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:28:38,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:28:38,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:28:38,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:28:38,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (1/1) ... [2023-01-28 01:28:38,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:28:38,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:28:38,534 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 01:28:38,549 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 01:28:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:28:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:28:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:28:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:28:38,579 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:28:38,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:28:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:28:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:28:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:28:38,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:28:38,581 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 01:28:38,704 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:28:38,706 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:28:38,846 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:28:38,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:28:38,852 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 01:28:38,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:28:38 BoogieIcfgContainer [2023-01-28 01:28:38,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:28:38,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:28:38,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:28:38,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:28:38,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:28:38" (1/3) ... [2023-01-28 01:28:38,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa20571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:28:38, skipping insertion in model container [2023-01-28 01:28:38,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:28:38" (2/3) ... [2023-01-28 01:28:38,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa20571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:28:38, skipping insertion in model container [2023-01-28 01:28:38,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:28:38" (3/3) ... [2023-01-28 01:28:38,860 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_46-refine-protected1_true.i [2023-01-28 01:28:38,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:28:38,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 01:28:38,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:28:38,909 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:28:38,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 60 transitions, 125 flow [2023-01-28 01:28:38,966 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2023-01-28 01:28:38,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:38,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-28 01:28:38,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 60 transitions, 125 flow [2023-01-28 01:28:38,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 41 transitions, 85 flow [2023-01-28 01:28:38,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:28:38,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 41 transitions, 85 flow [2023-01-28 01:28:38,986 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 41 transitions, 85 flow [2023-01-28 01:28:38,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 41 transitions, 85 flow [2023-01-28 01:28:38,998 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2023-01-28 01:28:38,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:38,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-01-28 01:28:38,999 INFO L119 LiptonReduction]: Number of co-enabled transitions 96 [2023-01-28 01:28:40,471 INFO L134 LiptonReduction]: Checked pairs total: 58 [2023-01-28 01:28:40,472 INFO L136 LiptonReduction]: Total number of compositions: 37 [2023-01-28 01:28:40,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 01:28:40,497 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;@5dfe8ac6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:28:40,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 01:28:40,499 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-01-28 01:28:40,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:40,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:28:40,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-01-28 01:28:40,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:28:40,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:28:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash 202417, now seen corresponding path program 1 times [2023-01-28 01:28:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:28:40,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996721981] [2023-01-28 01:28:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:28:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:28:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:28:40,692 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 01:28:40,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:28:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996721981] [2023-01-28 01:28:40,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996721981] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:28:40,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:28:40,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 01:28:40,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427825414] [2023-01-28 01:28:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:28:40,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 01:28:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:28:40,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 01:28:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 01:28:40,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 97 [2023-01-28 01:28:40,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 2 states, 2 states have (on average 56.5) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:40,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:28:40,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 97 [2023-01-28 01:28:40,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:28:40,748 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-01-28 01:28:40,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:28:40,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 2/5 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-01-28 01:28:40,749 INFO L137 encePairwiseOnDemand]: 95/97 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2023-01-28 01:28:40,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 3 transitions, 15 flow [2023-01-28 01:28:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 01:28:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 01:28:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 115 transitions. [2023-01-28 01:28:40,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5927835051546392 [2023-01-28 01:28:40,760 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 115 transitions. [2023-01-28 01:28:40,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 115 transitions. [2023-01-28 01:28:40,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:28:40,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 115 transitions. [2023-01-28 01:28:40,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:40,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:40,771 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:40,773 INFO L175 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 2 states and 115 transitions. [2023-01-28 01:28:40,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 3 transitions, 15 flow [2023-01-28 01:28:40,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 7 places, 3 transitions, 14 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:28:40,775 INFO L231 Difference]: Finished difference. Result has 7 places, 0 transitions, 0 flow [2023-01-28 01:28:40,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=7, PETRI_TRANSITIONS=0} [2023-01-28 01:28:40,780 INFO L281 CegarLoopForPetriNet]: 9 programPoint places, -2 predicate places. [2023-01-28 01:28:40,780 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 0 transitions, 0 flow [2023-01-28 01:28:40,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 56.5) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:28:40,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 01:28:40,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-01-28 01:28:40,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 01:28:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:28:40,783 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:28:40,800 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 01:28:40,800 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 01:28:40,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 01:28:40 BasicIcfg [2023-01-28 01:28:40,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 01:28:40,803 INFO L158 Benchmark]: Toolchain (without parser) took 2711.93ms. Allocated memory is still 348.1MB. Free memory was 305.2MB in the beginning and 304.7MB in the end (delta: 443.1kB). Peak memory consumption was 1.8MB. Max. memory is 16.0GB. [2023-01-28 01:28:40,804 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 212.9MB in the beginning and 212.7MB in the end (delta: 169.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:28:40,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.85ms. Allocated memory is still 348.1MB. Free memory was 304.9MB in the beginning and 286.3MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 01:28:40,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.56ms. Allocated memory is still 348.1MB. Free memory was 286.3MB in the beginning and 284.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:28:40,805 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 348.1MB. Free memory was 284.5MB in the beginning and 283.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:28:40,805 INFO L158 Benchmark]: RCFGBuilder took 348.91ms. Allocated memory is still 348.1MB. Free memory was 283.2MB in the beginning and 271.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 01:28:40,806 INFO L158 Benchmark]: TraceAbstraction took 1947.86ms. Allocated memory is still 348.1MB. Free memory was 270.4MB in the beginning and 304.7MB in the end (delta: -34.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:28:40,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 212.9MB in the beginning and 212.7MB in the end (delta: 169.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 332.85ms. Allocated memory is still 348.1MB. Free memory was 304.9MB in the beginning and 286.3MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.56ms. Allocated memory is still 348.1MB. Free memory was 286.3MB in the beginning and 284.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 348.1MB. Free memory was 284.5MB in the beginning and 283.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 348.91ms. Allocated memory is still 348.1MB. Free memory was 283.2MB in the beginning and 271.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1947.86ms. Allocated memory is still 348.1MB. Free memory was 270.4MB in the beginning and 304.7MB in the end (delta: -34.4MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 45 PlacesBefore, 9 PlacesAfterwards, 41 TransitionsBefore, 5 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 37 TotalNumberOfCompositions, 58 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 46, independent: 46, independent conditional: 0, independent unconditional: 46, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 58, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 46, unknown conditional: 0, unknown unconditional: 46] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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, 63 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: 1.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2023-01-28 01:28:40,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...