/usr/bin/java -Xmx8000000000 -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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 10:06:20,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 10:06:20,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 10:06:20,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 10:06:20,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 10:06:20,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 10:06:20,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 10:06:20,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 10:06:20,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 10:06:20,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 10:06:20,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 10:06:20,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 10:06:20,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 10:06:20,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 10:06:20,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 10:06:20,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 10:06:20,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 10:06:20,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 10:06:20,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 10:06:20,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 10:06:20,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 10:06:20,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 10:06:20,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 10:06:20,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 10:06:20,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-10 10:06:20,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-10 10:06:20,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-10 10:06:20,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-10 10:06:20,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-10 10:06:20,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-10 10:06:20,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-10 10:06:20,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-10 10:06:20,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-10 10:06:20,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-10 10:06:20,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-10 10:06:20,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-10 10:06:20,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-10 10:06:20,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-10 10:06:20,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 10:06:20,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 10:06:20,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 10:06:20,736 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-MCRwithoutDepranks-Lazy.epf [2022-02-10 10:06:20,760 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 10:06:20,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 10:06:20,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 10:06:20,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 10:06:20,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 10:06:20,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 10:06:20,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 10:06:20,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 10:06:20,761 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 10:06:20,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 10:06:20,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 10:06:20,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 10:06:20,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 10:06:20,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 10:06:20,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 10:06:20,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 10:06:20,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 10:06:20,763 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 10:06:20,770 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-10 10:06:20,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 10:06:20,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 10:06:20,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 10:06:20,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 10:06:20,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 10:06:20,977 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 10:06:20,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2022-02-10 10:06:21,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7ccd679/309cf64c2b484a9783eb85a86ab2e739/FLAG38d197324 [2022-02-10 10:06:21,469 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 10:06:21,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2022-02-10 10:06:21,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7ccd679/309cf64c2b484a9783eb85a86ab2e739/FLAG38d197324 [2022-02-10 10:06:21,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7ccd679/309cf64c2b484a9783eb85a86ab2e739 [2022-02-10 10:06:21,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 10:06:21,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 10:06:21,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 10:06:21,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 10:06:21,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 10:06:21,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:06:21" (1/1) ... [2022-02-10 10:06:21,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f0447a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:21, skipping insertion in model container [2022-02-10 10:06:21,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:06:21" (1/1) ... [2022-02-10 10:06:21,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 10:06:21,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 10:06:22,134 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30813,30826] [2022-02-10 10:06:22,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 10:06:22,143 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 10:06:22,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30813,30826] [2022-02-10 10:06:22,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 10:06:22,198 INFO L208 MainTranslator]: Completed translation [2022-02-10 10:06:22,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22 WrapperNode [2022-02-10 10:06:22,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 10:06:22,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 10:06:22,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 10:06:22,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 10:06:22,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,242 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-02-10 10:06:22,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 10:06:22,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 10:06:22,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 10:06:22,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 10:06:22,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 10:06:22,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 10:06:22,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 10:06:22,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 10:06:22,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (1/1) ... [2022-02-10 10:06:22,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 10:06:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 10:06:22,292 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) [2022-02-10 10:06:22,332 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 [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-02-10 10:06:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-02-10 10:06:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 10:06:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 10:06:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 10:06:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 10:06:22,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 10:06:22,353 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 10:06:22,447 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 10:06:22,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 10:06:22,576 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 10:06:22,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 10:06:22,581 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 10:06:22,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:06:22 BoogieIcfgContainer [2022-02-10 10:06:22,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 10:06:22,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 10:06:22,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 10:06:22,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 10:06:22,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:06:21" (1/3) ... [2022-02-10 10:06:22,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7d62e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:06:22, skipping insertion in model container [2022-02-10 10:06:22,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:06:22" (2/3) ... [2022-02-10 10:06:22,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7d62e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:06:22, skipping insertion in model container [2022-02-10 10:06:22,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:06:22" (3/3) ... [2022-02-10 10:06:22,588 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-02-10 10:06:22,592 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 10:06:22,592 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 10:06:22,592 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 10:06:22,592 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 10:06:22,623 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,624 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,624 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,624 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,624 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,624 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,625 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,625 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,625 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,625 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,625 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,627 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,627 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,627 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,627 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,631 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,631 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,631 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,631 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,633 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,633 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,633 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,633 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,633 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,636 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,636 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,636 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,636 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,636 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,638 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,639 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,639 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,639 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,639 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 10:06:22,639 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 10:06:22,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 10:06:22,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 10:06:22,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-10 10:06:22,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-10 10:06:22,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 10:06:22,731 INFO L339 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 10:06:22,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 10:06:22,905 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-02-10 10:06:22,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 10:06:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 10:06:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-02-10 10:06:22,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 10:06:22,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566672249] [2022-02-10 10:06:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:22,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 10:06:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:23,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 10:06:23,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566672249] [2022-02-10 10:06:23,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566672249] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 10:06:23,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 10:06:23,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 10:06:23,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99957139] [2022-02-10 10:06:23,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 10:06:23,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 10:06:23,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 10:06:23,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 10:06:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 10:06:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,187 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 10:06:23,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 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) [2022-02-10 10:06:23,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,357 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 91 transitions and produced 92 states. [2022-02-10 10:06:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 10:06:23,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 10:06:23,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 10:06:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-02-10 10:06:23,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 10:06:23,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441255134] [2022-02-10 10:06:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:23,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 10:06:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:23,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 10:06:23,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441255134] [2022-02-10 10:06:23,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441255134] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 10:06:23,509 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 10:06:23,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 10:06:23,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458032057] [2022-02-10 10:06:23,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 10:06:23,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 10:06:23,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 10:06:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 10:06:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 10:06:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,512 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 10:06:23,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-02-10 10:06:23,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,641 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 114 transitions and produced 115 states. [2022-02-10 10:06:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:23,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 10:06:23,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 10:06:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 10:06:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-02-10 10:06:23,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 10:06:23,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387437162] [2022-02-10 10:06:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:23,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 10:06:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:23,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 10:06:23,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387437162] [2022-02-10 10:06:23,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387437162] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 10:06:23,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927447172] [2022-02-10 10:06:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:23,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:06:23,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 10:06:23,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 10:06:23,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 10:06:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:23,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-10 10:06:23,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 10:06:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:23,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 10:06:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:24,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927447172] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 10:06:24,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 10:06:24,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-10 10:06:24,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448946229] [2022-02-10 10:06:24,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 10:06:24,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 10:06:24,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 10:06:24,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 10:06:24,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-10 10:06:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:24,067 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 10:06:24,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2022-02-10 10:06:24,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:24,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:24,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:24,358 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 160 transitions and produced 159 states. [2022-02-10 10:06:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 10:06:24,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-10 10:06:24,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-10 10:06:24,573 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 10:06:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 10:06:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-02-10 10:06:24,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 10:06:24,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043353200] [2022-02-10 10:06:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:24,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 10:06:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:24,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 10:06:24,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043353200] [2022-02-10 10:06:24,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043353200] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 10:06:24,639 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558311585] [2022-02-10 10:06:24,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 10:06:24,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:06:24,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 10:06:24,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 10:06:24,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 10:06:24,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 10:06:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 10:06:24,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 10:06:24,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 10:06:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:24,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 10:06:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:25,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558311585] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 10:06:25,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 10:06:25,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-10 10:06:25,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385106248] [2022-02-10 10:06:25,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 10:06:25,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-10 10:06:25,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 10:06:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-10 10:06:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-02-10 10:06:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:25,004 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 10:06:25,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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) [2022-02-10 10:06:25,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:25,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:25,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-10 10:06:25,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:25,414 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 252 transitions and produced 244 states. [2022-02-10 10:06:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 10:06:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 10:06:25,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 10:06:25,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:06:25,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 10:06:25,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 10:06:25,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-02-10 10:06:25,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 10:06:25,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088833184] [2022-02-10 10:06:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:25,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 10:06:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:25,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 10:06:25,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088833184] [2022-02-10 10:06:25,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088833184] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 10:06:25,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321953712] [2022-02-10 10:06:25,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 10:06:25,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:06:25,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 10:06:25,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 10:06:25,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 10:06:25,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-10 10:06:25,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 10:06:25,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-10 10:06:25,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 10:06:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:26,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 10:06:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:26,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321953712] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 10:06:26,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 10:06:26,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2022-02-10 10:06:26,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752649358] [2022-02-10 10:06:26,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 10:06:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-10 10:06:26,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 10:06:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-10 10:06:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2022-02-10 10:06:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:26,289 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 10:06:26,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 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) [2022-02-10 10:06:26,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:26,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:26,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-10 10:06:26,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-10 10:06:26,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:27,092 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 413 transitions and produced 392 states. [2022-02-10 10:06:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:06:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:06:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 10:06:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 10:06:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-10 10:06:27,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 10:06:27,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:06:27,300 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 10:06:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 10:06:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2049692625, now seen corresponding path program 4 times [2022-02-10 10:06:27,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 10:06:27,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689560073] [2022-02-10 10:06:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 10:06:27,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 10:06:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 10:06:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:28,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 10:06:28,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689560073] [2022-02-10 10:06:28,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689560073] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 10:06:28,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242893638] [2022-02-10 10:06:28,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 10:06:28,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:06:28,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 10:06:28,692 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 10:06:28,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 10:06:28,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 10:06:28,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 10:06:28,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-10 10:06:28,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 10:06:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:06:31,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 10:13:46,202 WARN L228 SmtUtils]: Spent 9.96s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 10:16:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 649 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 10:16:00,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242893638] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 10:16:00,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 10:16:00,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 139 [2022-02-10 10:16:00,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676442211] [2022-02-10 10:16:00,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 10:16:00,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-02-10 10:16:00,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 10:16:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-02-10 10:16:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=17795, Unknown=147, NotChecked=0, Total=19182 [2022-02-10 10:16:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:16:00,010 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 10:16:00,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.050359712230216) internal successors, (424), 139 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 10:16:00,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:16:00,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 10:16:00,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-10 10:16:00,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-10 10:16:00,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2022-02-10 10:16:00,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 10:18:26,408 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-02-10 10:18:26,419 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 101 [2022-02-10 10:18:26,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 10:18:26,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 10:18:26,613 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.MaximalCausalityReduction.internalSuccessors(MaximalCausalityReduction.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.MaximalCausalityReduction.internalSuccessors(MaximalCausalityReduction.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.INwaOutgoingLetterAndTransitionProvider.lambda$0(INwaOutgoingLetterAndTransitionProvider.java:123) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIterator.nextLetter(NestedIterator.java:69) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIterator.next(NestedIterator.java:94) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEachOrdered(ReferencePipeline.java:502) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.visitState(DepthFirstTraversal.java:198) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.traverse(DepthFirstTraversal.java:127) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.(DepthFirstTraversal.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderReductionFacade.apply(PartialOrderReductionFacade.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:440) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 58 more [2022-02-10 10:18:26,619 INFO L158 Benchmark]: Toolchain (without parser) took 724766.99ms. Allocated memory was 217.1MB in the beginning and 471.9MB in the end (delta: 254.8MB). Free memory was 165.1MB in the beginning and 392.8MB in the end (delta: -227.6MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. [2022-02-10 10:18:26,620 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 217.1MB. Free memory is still 182.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 10:18:26,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.70ms. Allocated memory is still 217.1MB. Free memory was 164.9MB in the beginning and 183.9MB in the end (delta: -19.0MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-02-10 10:18:26,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.39ms. Allocated memory is still 217.1MB. Free memory was 183.9MB in the beginning and 182.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 10:18:26,621 INFO L158 Benchmark]: Boogie Preprocessor took 25.25ms. Allocated memory is still 217.1MB. Free memory was 182.3MB in the beginning and 180.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 10:18:26,621 INFO L158 Benchmark]: RCFGBuilder took 314.50ms. Allocated memory is still 217.1MB. Free memory was 180.8MB in the beginning and 167.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-10 10:18:26,621 INFO L158 Benchmark]: TraceAbstraction took 724035.46ms. Allocated memory was 217.1MB in the beginning and 471.9MB in the end (delta: 254.8MB). Free memory was 167.1MB in the beginning and 392.8MB in the end (delta: -225.7MB). Peak memory consumption was 30.8MB. Max. memory is 8.0GB. [2022-02-10 10:18:26,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 217.1MB. Free memory is still 182.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 333.70ms. Allocated memory is still 217.1MB. Free memory was 164.9MB in the beginning and 183.9MB in the end (delta: -19.0MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.39ms. Allocated memory is still 217.1MB. Free memory was 183.9MB in the beginning and 182.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.25ms. Allocated memory is still 217.1MB. Free memory was 182.3MB in the beginning and 180.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 314.50ms. Allocated memory is still 217.1MB. Free memory was 180.8MB in the beginning and 167.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 724035.46ms. Allocated memory was 217.1MB in the beginning and 471.9MB in the end (delta: 254.8MB). Free memory was 167.1MB in the beginning and 392.8MB in the end (delta: -225.7MB). Peak memory consumption was 30.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-10 10:18:26,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 Received shutdown request...