./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcc4bb7cd8f204722096b247511c17cd0d430fd3f99523a22a5bf87d5e044f6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:04:37,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:04:37,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:04:37,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:04:37,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:04:37,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:04:37,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:04:37,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:04:37,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:04:37,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:04:37,756 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:04:37,758 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:04:37,758 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:04:37,758 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:04:37,758 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:04:37,758 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:04:37,758 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:04:37,759 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:04:37,759 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:04:37,760 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:04:37,760 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:04:37,760 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:04:37,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:04:37,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:04:37,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:04:37,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:04:37,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:04:37,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:04:37,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:04:37,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:04:37,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:04:37,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:04:37,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:04:37,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:04:37,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:04:37,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:04:37,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:04:37,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:04:37,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:04:37,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:04:37,765 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> Taipan 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 -> 8fcc4bb7cd8f204722096b247511c17cd0d430fd3f99523a22a5bf87d5e044f6 [2024-11-14 04:04:38,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:04:38,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:04:38,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:04:38,121 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:04:38,121 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:04:38,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/eca-rers2012/Problem01_label18.c Unable to find full path for "g++" [2024-11-14 04:04:40,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:04:40,722 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:04:40,723 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/sv-benchmarks/c/eca-rers2012/Problem01_label18.c [2024-11-14 04:04:40,750 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/data/23f7c1da8/2359b70ef9854bbf8bd32faf7eb0532c/FLAG3b9daceac [2024-11-14 04:04:40,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/data/23f7c1da8/2359b70ef9854bbf8bd32faf7eb0532c [2024-11-14 04:04:40,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:04:40,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:04:40,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:04:40,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:04:40,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:04:40,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:04:40" (1/1) ... [2024-11-14 04:04:40,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4dc344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:40, skipping insertion in model container [2024-11-14 04:04:40,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:04:40" (1/1) ... [2024-11-14 04:04:40,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:04:41,311 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/sv-benchmarks/c/eca-rers2012/Problem01_label18.c[17985,17998] [2024-11-14 04:04:41,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:04:41,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:04:41,571 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/sv-benchmarks/c/eca-rers2012/Problem01_label18.c[17985,17998] [2024-11-14 04:04:41,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:04:41,620 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:04:41,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41 WrapperNode [2024-11-14 04:04:41,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:04:41,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:04:41,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:04:41,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:04:41,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,698 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-11-14 04:04:41,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:04:41,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:04:41,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:04:41,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:04:41,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:04:41,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:04:41,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:04:41,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:04:41,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (1/1) ... [2024-11-14 04:04:41,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:04:41,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:41,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:04:41,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:04:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:04:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:04:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:04:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:04:41,937 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:04:41,939 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:04:43,348 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-14 04:04:43,348 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:04:43,671 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:04:43,674 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:04:43,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:43 BoogieIcfgContainer [2024-11-14 04:04:43,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:04:43,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:04:43,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:04:43,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:04:43,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:04:40" (1/3) ... [2024-11-14 04:04:43,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7efc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:04:43, skipping insertion in model container [2024-11-14 04:04:43,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:04:41" (2/3) ... [2024-11-14 04:04:43,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7efc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:04:43, skipping insertion in model container [2024-11-14 04:04:43,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:43" (3/3) ... [2024-11-14 04:04:43,686 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label18.c [2024-11-14 04:04:43,703 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:04:43,706 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem01_label18.c that has 1 procedures, 76 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:04:43,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:04:43,788 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1f8244bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:04:43,788 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:04:43,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2024-11-14 04:04:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 04:04:43,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:43,805 INFO L215 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, 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] [2024-11-14 04:04:43,806 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:43,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -131203338, now seen corresponding path program 1 times [2024-11-14 04:04:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:43,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088561396] [2024-11-14 04:04:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:43,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:44,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088561396] [2024-11-14 04:04:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088561396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:44,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:04:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182744605] [2024-11-14 04:04:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:44,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:44,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:44,559 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2024-11-14 04:04:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:45,183 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2024-11-14 04:04:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:45,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2024-11-14 04:04:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:45,199 INFO L225 Difference]: With dead ends: 224 [2024-11-14 04:04:45,199 INFO L226 Difference]: Without dead ends: 145 [2024-11-14 04:04:45,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:45,209 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:45,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:04:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-14 04:04:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-14 04:04:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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) [2024-11-14 04:04:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2024-11-14 04:04:45,268 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2024-11-14 04:04:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:45,269 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2024-11-14 04:04:45,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2024-11-14 04:04:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2024-11-14 04:04:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 04:04:45,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:45,275 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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] [2024-11-14 04:04:45,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:04:45,276 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:45,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1128626711, now seen corresponding path program 1 times [2024-11-14 04:04:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:45,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108114747] [2024-11-14 04:04:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:45,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108114747] [2024-11-14 04:04:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108114747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:45,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:04:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647731706] [2024-11-14 04:04:45,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:45,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:45,448 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2024-11-14 04:04:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:46,009 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2024-11-14 04:04:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2024-11-14 04:04:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:46,012 INFO L225 Difference]: With dead ends: 431 [2024-11-14 04:04:46,012 INFO L226 Difference]: Without dead ends: 287 [2024-11-14 04:04:46,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:46,014 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:46,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 34 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:04:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-14 04:04:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-14 04:04:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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) [2024-11-14 04:04:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2024-11-14 04:04:46,032 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2024-11-14 04:04:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:46,037 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2024-11-14 04:04:46,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2024-11-14 04:04:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2024-11-14 04:04:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 04:04:46,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:46,040 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:46,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:04:46,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:46,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:46,041 INFO L85 PathProgramCache]: Analyzing trace with hash -904326524, now seen corresponding path program 1 times [2024-11-14 04:04:46,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:46,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186831194] [2024-11-14 04:04:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:46,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:04:46,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186831194] [2024-11-14 04:04:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186831194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:46,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:04:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785100905] [2024-11-14 04:04:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:46,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:46,281 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-14 04:04:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:46,779 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2024-11-14 04:04:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 105 [2024-11-14 04:04:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:46,783 INFO L225 Difference]: With dead ends: 715 [2024-11-14 04:04:46,783 INFO L226 Difference]: Without dead ends: 429 [2024-11-14 04:04:46,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:46,785 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:46,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:04:46,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-14 04:04:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2024-11-14 04:04:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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) [2024-11-14 04:04:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2024-11-14 04:04:46,819 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2024-11-14 04:04:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:46,819 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2024-11-14 04:04:46,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2024-11-14 04:04:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2024-11-14 04:04:46,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-14 04:04:46,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:46,826 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:46,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:04:46,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:46,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash -824550002, now seen corresponding path program 1 times [2024-11-14 04:04:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053007132] [2024-11-14 04:04:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:46,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 04:04:47,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:47,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053007132] [2024-11-14 04:04:47,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053007132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:47,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:04:47,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:04:47,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079938455] [2024-11-14 04:04:47,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:47,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:47,134 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-11-14 04:04:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:47,545 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2024-11-14 04:04:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 109 [2024-11-14 04:04:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:47,548 INFO L225 Difference]: With dead ends: 715 [2024-11-14 04:04:47,548 INFO L226 Difference]: Without dead ends: 358 [2024-11-14 04:04:47,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:04:47,550 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:47,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:04:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-14 04:04:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-11-14 04:04:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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) [2024-11-14 04:04:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2024-11-14 04:04:47,565 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2024-11-14 04:04:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:47,565 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2024-11-14 04:04:47,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-11-14 04:04:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2024-11-14 04:04:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-14 04:04:47,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:47,568 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:47,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:04:47,568 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:47,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1072689670, now seen corresponding path program 1 times [2024-11-14 04:04:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526540622] [2024-11-14 04:04:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 04:04:48,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526540622] [2024-11-14 04:04:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526540622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195904144] [2024-11-14 04:04:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:48,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:48,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:48,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:04:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:48,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:04:48,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:04:48,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195904144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:48,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:04:48,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 04:04:48,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477750129] [2024-11-14 04:04:48,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:48,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:48,379 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-14 04:04:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:48,805 INFO L93 Difference]: Finished difference Result 857 states and 1370 transitions. [2024-11-14 04:04:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 113 [2024-11-14 04:04:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:48,809 INFO L225 Difference]: With dead ends: 857 [2024-11-14 04:04:48,809 INFO L226 Difference]: Without dead ends: 429 [2024-11-14 04:04:48,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:48,813 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:48,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 126 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:04:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-14 04:04:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2024-11-14 04:04:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.2408963585434174) internal successors, (443), 357 states have internal predecessors, (443), 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) [2024-11-14 04:04:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 443 transitions. [2024-11-14 04:04:48,832 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 443 transitions. Word has length 113 [2024-11-14 04:04:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:48,833 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 443 transitions. [2024-11-14 04:04:48,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-14 04:04:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 443 transitions. [2024-11-14 04:04:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 04:04:48,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:48,840 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-14 04:04:48,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:04:49,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:49,041 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:49,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2016986792, now seen corresponding path program 1 times [2024-11-14 04:04:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025485517] [2024-11-14 04:04:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-14 04:04:49,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025485517] [2024-11-14 04:04:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025485517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988662673] [2024-11-14 04:04:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:49,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:49,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:49,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:49,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:04:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:49,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:04:49,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 04:04:49,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988662673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:49,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:04:49,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 04:04:49,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044361998] [2024-11-14 04:04:49,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:49,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:49,764 INFO L87 Difference]: Start difference. First operand 358 states and 443 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:50,125 INFO L93 Difference]: Finished difference Result 999 states and 1251 transitions. [2024-11-14 04:04:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-14 04:04:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:50,128 INFO L225 Difference]: With dead ends: 999 [2024-11-14 04:04:50,128 INFO L226 Difference]: Without dead ends: 642 [2024-11-14 04:04:50,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:04:50,130 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:50,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 121 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:04:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-14 04:04:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2024-11-14 04:04:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.2105263157894737) internal successors, (690), 570 states have internal predecessors, (690), 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) [2024-11-14 04:04:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 690 transitions. [2024-11-14 04:04:50,146 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 690 transitions. Word has length 125 [2024-11-14 04:04:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:50,146 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 690 transitions. [2024-11-14 04:04:50,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:04:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 690 transitions. [2024-11-14 04:04:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-14 04:04:50,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:50,149 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:50,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:04:50,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:50,349 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:04:50,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash -322022441, now seen corresponding path program 1 times [2024-11-14 04:04:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:50,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901462992] [2024-11-14 04:04:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:04:50,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901462992] [2024-11-14 04:04:50,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901462992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387674806] [2024-11-14 04:04:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:50,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:50,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:50,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:50,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:04:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:51,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:04:51,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:04:51,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:51,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387674806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:51,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:04:51,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-14 04:04:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673049094] [2024-11-14 04:04:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:51,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:04:51,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:04:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:51,258 INFO L87 Difference]: Start difference. First operand 571 states and 690 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-11-14 04:04:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:51,628 INFO L93 Difference]: Finished difference Result 1636 states and 1968 transitions. [2024-11-14 04:04:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:04:51,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 144 [2024-11-14 04:04:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:51,630 INFO L225 Difference]: With dead ends: 1636 [2024-11-14 04:04:51,630 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:04:51,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:04:51,632 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:51,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 118 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:04:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:04:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:04:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-14 04:04:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:04:51,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 144 [2024-11-14 04:04:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:51,633 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:04:51,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-11-14 04:04:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:04:51,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:04:51,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:04:51,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:04:51,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:51,846 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:04:51,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:04:51,972 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:04:51,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:04:51 BoogieIcfgContainer [2024-11-14 04:04:51,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:04:51,996 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:04:51,996 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:04:51,996 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:04:51,998 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:04:43" (3/4) ... [2024-11-14 04:04:52,000 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:04:52,026 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2024-11-14 04:04:52,027 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-14 04:04:52,027 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 04:04:52,029 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:04:52,220 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:04:52,220 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:04:52,220 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:04:52,222 INFO L158 Benchmark]: Toolchain (without parser) took 11440.72ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 88.9MB in the beginning and 47.9MB in the end (delta: 41.0MB). Peak memory consumption was 98.7MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,222 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:04:52,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 838.55ms. Allocated memory is still 117.4MB. Free memory was 88.3MB in the beginning and 61.8MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.02ms. Allocated memory is still 117.4MB. Free memory was 61.8MB in the beginning and 56.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,224 INFO L158 Benchmark]: Boogie Preprocessor took 72.44ms. Allocated memory is still 117.4MB. Free memory was 56.4MB in the beginning and 52.2MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,224 INFO L158 Benchmark]: RCFGBuilder took 1903.19ms. Allocated memory is still 117.4MB. Free memory was 52.2MB in the beginning and 71.5MB in the end (delta: -19.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,224 INFO L158 Benchmark]: TraceAbstraction took 8318.58ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 71.5MB in the beginning and 60.0MB in the end (delta: 11.5MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,225 INFO L158 Benchmark]: Witness Printer took 224.50ms. Allocated memory is still 176.2MB. Free memory was 58.2MB in the beginning and 47.9MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:04:52,228 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 83.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 838.55ms. Allocated memory is still 117.4MB. Free memory was 88.3MB in the beginning and 61.8MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.02ms. Allocated memory is still 117.4MB. Free memory was 61.8MB in the beginning and 56.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.44ms. Allocated memory is still 117.4MB. Free memory was 56.4MB in the beginning and 52.2MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1903.19ms. Allocated memory is still 117.4MB. Free memory was 52.2MB in the beginning and 71.5MB in the end (delta: -19.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8318.58ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 71.5MB in the beginning and 60.0MB in the end (delta: 11.5MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. * Witness Printer took 224.50ms. Allocated memory is still 176.2MB. Free memory was 58.2MB in the beginning and 47.9MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 486]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 281 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 281 mSDsluCounter, 512 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 371 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1439 IncrementalHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 371 mSolverCounterUnsat, 485 mSDtfsCounter, 1439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=6, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 213 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1126 NumberOfCodeBlocks, 1126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1116 ConstructedInterpolants, 0 QuantifiedInterpolants, 2629 SizeOfPredicates, 0 NumberOfNonLiveVariables, 911 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 488/497 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a8 < 14) || ((a21 == 1) && (15 <= a8))) || ((a21 == 1) && (a16 <= 4))) || ((a17 <= 0) && (a21 == 1))) || ((a21 == 1) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:04:52,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e8439a2-cbe6-45c5-b1b9-4a8943e3f269/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE