./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46307615818d6371ae296fa4995def50a9373bd159748713204d6c22dd4af97e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 09:34:36,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 09:34:36,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 09:34:36,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 09:34:36,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 09:34:36,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 09:34:36,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 09:34:36,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 09:34:36,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 09:34:36,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 09:34:36,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 09:34:36,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 09:34:36,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 09:34:36,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 09:34:36,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 09:34:36,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 09:34:36,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 09:34:36,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 09:34:36,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 09:34:36,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 09:34:36,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 09:34:36,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 09:34:36,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 09:34:36,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 09:34:36,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 09:34:36,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 09:34:36,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 09:34:36,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 09:34:36,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 09:34:36,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 09:34:36,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 09:34:36,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 09:34:36,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 09:34:36,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 09:34:36,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 09:34:36,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 09:34:36,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 09:34:36,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 09:34:36,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 09:34:36,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 09:34:36,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 09:34:36,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 09:34:36,653 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 09:34:36,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 09:34:36,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 09:34:36,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 09:34:36,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 09:34:36,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 09:34:36,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 09:34:36,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 09:34:36,655 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 09:34:36,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 09:34:36,656 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 09:34:36,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 09:34:36,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 09:34:36,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 09:34:36,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 09:34:36,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 09:34:36,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 09:34:36,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 09:34:36,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 09:34:36,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 09:34:36,659 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 09:34:36,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 09:34:36,659 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 09:34:36,659 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46307615818d6371ae296fa4995def50a9373bd159748713204d6c22dd4af97e [2023-02-14 09:34:36,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 09:34:36,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 09:34:36,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 09:34:36,904 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 09:34:36,904 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 09:34:36,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy7_ground-1.i [2023-02-14 09:34:37,918 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 09:34:38,099 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 09:34:38,100 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i [2023-02-14 09:34:38,105 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22203525c/62170d2effd540c89f326db12cbbeb5a/FLAG3de34410a [2023-02-14 09:34:38,520 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22203525c/62170d2effd540c89f326db12cbbeb5a [2023-02-14 09:34:38,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 09:34:38,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 09:34:38,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 09:34:38,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 09:34:38,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 09:34:38,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bef5408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38, skipping insertion in model container [2023-02-14 09:34:38,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 09:34:38,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 09:34:38,633 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i[816,829] [2023-02-14 09:34:38,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 09:34:38,653 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 09:34:38,661 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy7_ground-1.i[816,829] [2023-02-14 09:34:38,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 09:34:38,679 INFO L208 MainTranslator]: Completed translation [2023-02-14 09:34:38,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38 WrapperNode [2023-02-14 09:34:38,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 09:34:38,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 09:34:38,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 09:34:38,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 09:34:38,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,706 INFO L138 Inliner]: procedures = 16, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 163 [2023-02-14 09:34:38,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 09:34:38,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 09:34:38,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 09:34:38,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 09:34:38,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 09:34:38,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 09:34:38,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 09:34:38,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 09:34:38,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (1/1) ... [2023-02-14 09:34:38,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 09:34:38,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:38,790 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) [2023-02-14 09:34:38,830 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 [2023-02-14 09:34:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 09:34:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 09:34:38,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 09:34:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 09:34:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 09:34:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 09:34:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 09:34:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 09:34:38,936 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 09:34:38,940 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 09:34:39,136 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 09:34:39,140 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 09:34:39,140 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2023-02-14 09:34:39,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:34:39 BoogieIcfgContainer [2023-02-14 09:34:39,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 09:34:39,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 09:34:39,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 09:34:39,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 09:34:39,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:34:38" (1/3) ... [2023-02-14 09:34:39,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daed0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:34:39, skipping insertion in model container [2023-02-14 09:34:39,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:34:38" (2/3) ... [2023-02-14 09:34:39,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@daed0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:34:39, skipping insertion in model container [2023-02-14 09:34:39,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:34:39" (3/3) ... [2023-02-14 09:34:39,148 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-1.i [2023-02-14 09:34:39,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 09:34:39,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 09:34:39,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 09:34:39,212 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=true, 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;@f4ab508, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 09:34:39,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 09:34:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 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) [2023-02-14 09:34:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 09:34:39,221 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:39,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:39,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1647230389, now seen corresponding path program 1 times [2023-02-14 09:34:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:39,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272185508] [2023-02-14 09:34:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 09:34:39,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:39,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272185508] [2023-02-14 09:34:39,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272185508] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:34:39,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 09:34:39,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 09:34:39,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598867909] [2023-02-14 09:34:39,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:34:39,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 09:34:39,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:34:39,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 09:34:39,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 09:34:39,546 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 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) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-02-14 09:34:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:34:39,583 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2023-02-14 09:34:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 09:34:39,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) Word has length 21 [2023-02-14 09:34:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:34:39,590 INFO L225 Difference]: With dead ends: 70 [2023-02-14 09:34:39,590 INFO L226 Difference]: Without dead ends: 34 [2023-02-14 09:34:39,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 09:34:39,594 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:34:39,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 82 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:34:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-14 09:34:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-02-14 09:34:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2023-02-14 09:34:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-02-14 09:34:39,617 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21 [2023-02-14 09:34:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:34:39,618 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-02-14 09:34:39,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-02-14 09:34:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-02-14 09:34:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 09:34:39,631 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:39,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:39,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 09:34:39,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash -212862985, now seen corresponding path program 1 times [2023-02-14 09:34:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:39,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419003891] [2023-02-14 09:34:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:39,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 09:34:39,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:39,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419003891] [2023-02-14 09:34:39,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419003891] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:34:39,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321577644] [2023-02-14 09:34:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:39,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:39,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 09:34:39,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 09:34:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:39,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 09:34:39,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:34:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 09:34:40,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 09:34:40,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321577644] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 09:34:40,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 09:34:40,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-14 09:34:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202571688] [2023-02-14 09:34:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 09:34:40,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 09:34:40,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:34:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 09:34:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 09:34:40,019 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-02-14 09:34:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:34:40,083 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2023-02-14 09:34:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 09:34:40,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) Word has length 23 [2023-02-14 09:34:40,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:34:40,087 INFO L225 Difference]: With dead ends: 72 [2023-02-14 09:34:40,087 INFO L226 Difference]: Without dead ends: 47 [2023-02-14 09:34:40,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 09:34:40,090 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:34:40,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 37 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:34:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-14 09:34:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2023-02-14 09:34:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2023-02-14 09:34:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2023-02-14 09:34:40,104 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 23 [2023-02-14 09:34:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:34:40,105 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2023-02-14 09:34:40,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-02-14 09:34:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2023-02-14 09:34:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 09:34:40,106 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:40,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:40,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 09:34:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:40,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1047765161, now seen corresponding path program 1 times [2023-02-14 09:34:40,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:40,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341155303] [2023-02-14 09:34:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 09:34:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341155303] [2023-02-14 09:34:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341155303] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:34:40,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981992279] [2023-02-14 09:34:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:40,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:40,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:40,418 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) [2023-02-14 09:34:40,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 09:34:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:40,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 09:34:40,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:34:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 09:34:40,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:34:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 09:34:40,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981992279] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:34:40,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:34:40,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-14 09:34:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887775380] [2023-02-14 09:34:40,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:34:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 09:34:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:34:40,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 09:34:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-14 09:34:40,587 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-02-14 09:34:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:34:40,622 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2023-02-14 09:34:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 09:34:40,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) Word has length 37 [2023-02-14 09:34:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:34:40,625 INFO L225 Difference]: With dead ends: 81 [2023-02-14 09:34:40,626 INFO L226 Difference]: Without dead ends: 46 [2023-02-14 09:34:40,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-14 09:34:40,627 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:34:40,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:34:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-14 09:34:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-02-14 09:34:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 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) [2023-02-14 09:34:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2023-02-14 09:34:40,636 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 37 [2023-02-14 09:34:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:34:40,636 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2023-02-14 09:34:40,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2023-02-14 09:34:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2023-02-14 09:34:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 09:34:40,639 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:40,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:40,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 09:34:40,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-14 09:34:40,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash -76527901, now seen corresponding path program 2 times [2023-02-14 09:34:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:40,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69957866] [2023-02-14 09:34:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:40,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-14 09:34:40,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:40,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69957866] [2023-02-14 09:34:40,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69957866] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:34:40,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926653828] [2023-02-14 09:34:40,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 09:34:40,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:40,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:40,938 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) [2023-02-14 09:34:40,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 09:34:41,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 09:34:41,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:34:41,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 09:34:41,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:34:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-14 09:34:41,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:34:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-14 09:34:41,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926653828] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:34:41,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:34:41,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-14 09:34:41,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951041858] [2023-02-14 09:34:41,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:34:41,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 09:34:41,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:34:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 09:34:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-14 09:34:41,154 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2023-02-14 09:34:41,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:34:41,266 INFO L93 Difference]: Finished difference Result 119 states and 154 transitions. [2023-02-14 09:34:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 09:34:41,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) Word has length 43 [2023-02-14 09:34:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:34:41,268 INFO L225 Difference]: With dead ends: 119 [2023-02-14 09:34:41,269 INFO L226 Difference]: Without dead ends: 88 [2023-02-14 09:34:41,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-14 09:34:41,271 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 09:34:41,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 59 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 09:34:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-14 09:34:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-14 09:34:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 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) [2023-02-14 09:34:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-02-14 09:34:41,291 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 43 [2023-02-14 09:34:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:34:41,291 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-02-14 09:34:41,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2023-02-14 09:34:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-02-14 09:34:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-02-14 09:34:41,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:41,294 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:41,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-14 09:34:41,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:41,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash 932289401, now seen corresponding path program 3 times [2023-02-14 09:34:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:41,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074780194] [2023-02-14 09:34:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:41,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-14 09:34:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:41,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074780194] [2023-02-14 09:34:41,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074780194] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:34:41,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460660129] [2023-02-14 09:34:41,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 09:34:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:41,825 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) [2023-02-14 09:34:41,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 09:34:42,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-14 09:34:42,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:34:42,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 09:34:42,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:34:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-14 09:34:42,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:34:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-14 09:34:42,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460660129] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:34:42,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:34:42,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-02-14 09:34:42,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733869839] [2023-02-14 09:34:42,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:34:42,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 09:34:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:34:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 09:34:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-02-14 09:34:42,796 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 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) [2023-02-14 09:34:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:34:43,076 INFO L93 Difference]: Finished difference Result 252 states and 310 transitions. [2023-02-14 09:34:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 09:34:43,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 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) Word has length 85 [2023-02-14 09:34:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:34:43,078 INFO L225 Difference]: With dead ends: 252 [2023-02-14 09:34:43,078 INFO L226 Difference]: Without dead ends: 175 [2023-02-14 09:34:43,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-02-14 09:34:43,079 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 135 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 09:34:43,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 170 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 09:34:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-14 09:34:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2023-02-14 09:34:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0520231213872833) internal successors, (182), 173 states have internal predecessors, (182), 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) [2023-02-14 09:34:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 182 transitions. [2023-02-14 09:34:43,088 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 182 transitions. Word has length 85 [2023-02-14 09:34:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:34:43,088 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 182 transitions. [2023-02-14 09:34:43,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 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) [2023-02-14 09:34:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 182 transitions. [2023-02-14 09:34:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-02-14 09:34:43,090 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:43,091 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:43,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 09:34:43,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:43,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1857988451, now seen corresponding path program 4 times [2023-02-14 09:34:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607926422] [2023-02-14 09:34:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-02-14 09:34:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:43,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607926422] [2023-02-14 09:34:43,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607926422] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:34:43,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735680903] [2023-02-14 09:34:43,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 09:34:43,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:43,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:43,591 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) [2023-02-14 09:34:43,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 09:34:43,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 09:34:43,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 09:34:43,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 09:34:43,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 09:34:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-02-14 09:34:43,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 09:34:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-02-14 09:34:43,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735680903] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 09:34:43,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 09:34:43,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-14 09:34:43,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955811656] [2023-02-14 09:34:43,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 09:34:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 09:34:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 09:34:43,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 09:34:43,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-02-14 09:34:43,922 INFO L87 Difference]: Start difference. First operand 174 states and 182 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) [2023-02-14 09:34:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 09:34:43,949 INFO L93 Difference]: Finished difference Result 349 states and 371 transitions. [2023-02-14 09:34:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 09:34:43,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) Word has length 171 [2023-02-14 09:34:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 09:34:43,951 INFO L225 Difference]: With dead ends: 349 [2023-02-14 09:34:43,952 INFO L226 Difference]: Without dead ends: 188 [2023-02-14 09:34:43,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-02-14 09:34:43,955 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 09:34:43,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 09:34:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-14 09:34:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-02-14 09:34:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0481283422459893) internal successors, (196), 187 states have internal predecessors, (196), 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) [2023-02-14 09:34:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 196 transitions. [2023-02-14 09:34:43,975 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 196 transitions. Word has length 171 [2023-02-14 09:34:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 09:34:43,975 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 196 transitions. [2023-02-14 09:34:43,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) [2023-02-14 09:34:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 196 transitions. [2023-02-14 09:34:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-02-14 09:34:43,980 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 09:34:43,981 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 09:34:43,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 09:34:44,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:44,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 09:34:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 09:34:44,188 INFO L85 PathProgramCache]: Analyzing trace with hash 727181845, now seen corresponding path program 5 times [2023-02-14 09:34:44,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 09:34:44,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898809163] [2023-02-14 09:34:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 09:34:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 09:34:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 09:34:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-02-14 09:34:44,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 09:34:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898809163] [2023-02-14 09:34:44,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898809163] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 09:34:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657374749] [2023-02-14 09:34:44,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 09:34:44,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 09:34:44,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 09:34:44,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 09:34:44,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process