./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-015.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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-015.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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 eba00f0070304f786aff86b6063ed55357e3f08cec960cb2b5a3d59a4f88aca7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:52:53,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:52:53,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:52:53,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:52:53,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:52:53,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:52:53,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:52:53,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:52:53,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:52:53,890 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:52:53,890 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:52:53,891 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:52:53,891 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:52:53,891 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:52:53,891 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:52:53,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:52:53,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:52:53,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:52:53,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:52:53,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:52:53,893 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:52:53,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:52:53,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:52:53,894 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:52:53,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:52:53,894 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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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 -> eba00f0070304f786aff86b6063ed55357e3f08cec960cb2b5a3d59a4f88aca7 [2024-11-14 03:52:54,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:52:54,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:52:54,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:52:54,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:52:54,221 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:52:54,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/xcsp/Dubois-015.c Unable to find full path for "g++" [2024-11-14 03:52:56,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:52:56,638 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:52:56,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/sv-benchmarks/c/xcsp/Dubois-015.c [2024-11-14 03:52:56,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data/004214ef6/ea97d3d6216c4231866509d9f276af81/FLAGb656763bb [2024-11-14 03:52:56,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data/004214ef6/ea97d3d6216c4231866509d9f276af81 [2024-11-14 03:52:56,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:52:56,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:52:56,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:52:56,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:52:56,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:52:56,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:52:56" (1/1) ... [2024-11-14 03:52:56,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f92b58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:56, skipping insertion in model container [2024-11-14 03:52:56,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:52:56" (1/1) ... [2024-11-14 03:52:56,941 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:52:57,251 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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/sv-benchmarks/c/xcsp/Dubois-015.c[10980,10993] [2024-11-14 03:52:57,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:52:57,290 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:52:57,407 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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/sv-benchmarks/c/xcsp/Dubois-015.c[10980,10993] [2024-11-14 03:52:57,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:52:57,443 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:52:57,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57 WrapperNode [2024-11-14 03:52:57,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:52:57,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:52:57,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:52:57,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:52:57,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,710 INFO L138 Inliner]: procedures = 13, calls = 127, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3001 [2024-11-14 03:52:57,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:52:57,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:52:57,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:52:57,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:52:57,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,984 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:57,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:58,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:52:58,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:52:58,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:52:58,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:52:58,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (1/1) ... [2024-11-14 03:52:58,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:52:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:58,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:52:58,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:52:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:52:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:52:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:52:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:52:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-14 03:52:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-14 03:52:58,376 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:52:58,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:53:02,516 INFO L? ?]: Removed 1040 outVars from TransFormulas that were not future-live. [2024-11-14 03:53:02,517 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:53:07,024 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:53:07,024 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 03:53:07,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:53:07 BoogieIcfgContainer [2024-11-14 03:53:07,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:53:07,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:53:07,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:53:07,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:53:07,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:52:56" (1/3) ... [2024-11-14 03:53:07,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df33477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:53:07, skipping insertion in model container [2024-11-14 03:53:07,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:57" (2/3) ... [2024-11-14 03:53:07,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df33477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:53:07, skipping insertion in model container [2024-11-14 03:53:07,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:53:07" (3/3) ... [2024-11-14 03:53:07,036 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-015.c [2024-11-14 03:53:07,055 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:53:07,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-015.c that has 2 procedures, 201 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 03:53:07,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:53:07,155 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;@53e35221, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:53:07,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:53:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 79 states have internal predecessors, (79), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-14 03:53:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-14 03:53:07,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:53:07,194 INFO L215 NwaCegarLoop]: trace histogram [120, 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, 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, 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, 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, 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 03:53:07,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:53:07,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:53:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1231656706, now seen corresponding path program 1 times [2024-11-14 03:53:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:53:07,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246649857] [2024-11-14 03:53:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:53:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:53:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:41,529 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 296 DAG size of output: 295 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:59:10,030 WARN L286 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 293 DAG size of output: 294 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:08,820 WARN L286 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 389 DAG size of output: 383 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:51,494 WARN L286 SmtUtils]: Spent 9.16s on a formula simplification. DAG size of input: 312 DAG size of output: 311 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:01:34,836 WARN L286 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 320 DAG size of output: 319 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:02:15,622 WARN L286 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 308 DAG size of output: 307 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:03:13,355 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 04:03:13,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 04:03:13,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:03:13,357 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:449) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:392) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:225) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 58 more [2024-11-14 04:03:13,368 INFO L158 Benchmark]: Toolchain (without parser) took 616480.03ms. Allocated memory was 117.4MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 92.3MB in the beginning and 757.2MB in the end (delta: -664.9MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-14 04:03:13,368 INFO L158 Benchmark]: CDTParser took 1.15ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:03:13,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.47ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 64.9MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:03:13,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 265.99ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 72.9MB in the end (delta: -8.0MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2024-11-14 04:03:13,369 INFO L158 Benchmark]: Boogie Preprocessor took 327.77ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 59.0MB in the end (delta: 14.0MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2024-11-14 04:03:13,370 INFO L158 Benchmark]: RCFGBuilder took 8984.57ms. Allocated memory was 117.4MB in the beginning and 637.5MB in the end (delta: 520.1MB). Free memory was 59.0MB in the beginning and 400.9MB in the end (delta: -341.9MB). Peak memory consumption was 412.8MB. Max. memory is 16.1GB. [2024-11-14 04:03:13,370 INFO L158 Benchmark]: TraceAbstraction took 606339.48ms. Allocated memory was 637.5MB in the beginning and 2.1GB in the end (delta: 1.5GB). Free memory was 400.9MB in the beginning and 757.2MB in the end (delta: -356.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-14 04:03:13,374 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.47ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 64.9MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 265.99ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 72.9MB in the end (delta: -8.0MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 327.77ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 59.0MB in the end (delta: 14.0MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * RCFGBuilder took 8984.57ms. Allocated memory was 117.4MB in the beginning and 637.5MB in the end (delta: 520.1MB). Free memory was 59.0MB in the beginning and 400.9MB in the end (delta: -341.9MB). Peak memory consumption was 412.8MB. Max. memory is 16.1GB. * TraceAbstraction took 606339.48ms. Allocated memory was 637.5MB in the beginning and 2.1GB in the end (delta: 1.5GB). Free memory was 400.9MB in the beginning and 757.2MB in the end (delta: -356.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-015.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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 eba00f0070304f786aff86b6063ed55357e3f08cec960cb2b5a3d59a4f88aca7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:03:16,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:03:16,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 04:03:16,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:03:16,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:03:16,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:03:16,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:03:16,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:03:16,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:03:16,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:03:16,321 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:03:16,321 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:03:16,321 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:03:16,321 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:03:16,321 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:03:16,322 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:03:16,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:03:16,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:03:16,322 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:03:16,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:03:16,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:03:16,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:03:16,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:03:16,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:03:16,323 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:03:16,327 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:03:16,327 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:03:16,327 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:03:16,327 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:03:16,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:03:16,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:03:16,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:03:16,329 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:03:16,329 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:03:16,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:03:16,329 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:03:16,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/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 -> eba00f0070304f786aff86b6063ed55357e3f08cec960cb2b5a3d59a4f88aca7 [2024-11-14 04:03:16,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:03:16,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:03:16,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:03:16,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:03:16,716 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:03:16,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/xcsp/Dubois-015.c Unable to find full path for "g++" [2024-11-14 04:03:18,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:03:19,162 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:03:19,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/sv-benchmarks/c/xcsp/Dubois-015.c [2024-11-14 04:03:19,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data/e53b56210/1cc070c4513e4be3ad76a61f661b499f/FLAG42d10a65e [2024-11-14 04:03:19,222 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/data/e53b56210/1cc070c4513e4be3ad76a61f661b499f [2024-11-14 04:03:19,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:03:19,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:03:19,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:03:19,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:03:19,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:03:19,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de05e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19, skipping insertion in model container [2024-11-14 04:03:19,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:03:19,672 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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/sv-benchmarks/c/xcsp/Dubois-015.c[10980,10993] [2024-11-14 04:03:19,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:03:19,700 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:03:19,775 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_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/sv-benchmarks/c/xcsp/Dubois-015.c[10980,10993] [2024-11-14 04:03:19,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:03:19,806 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:03:19,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19 WrapperNode [2024-11-14 04:03:19,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:03:19,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:03:19,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:03:19,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:03:19,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,885 INFO L138 Inliner]: procedures = 13, calls = 127, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 316 [2024-11-14 04:03:19,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:03:19,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:03:19,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:03:19,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:03:19,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:03:19,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:03:19,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:03:19,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:03:19,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (1/1) ... [2024-11-14 04:03:19,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:03:19,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:19,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:03:19,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:03:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:03:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:03:20,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:03:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:03:20,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-14 04:03:20,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-14 04:03:20,171 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:03:20,173 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:03:20,863 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-14 04:03:20,864 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:03:20,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:03:20,881 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:03:20,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:03:20 BoogieIcfgContainer [2024-11-14 04:03:20,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:03:20,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:03:20,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:03:20,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:03:20,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:03:19" (1/3) ... [2024-11-14 04:03:20,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5405656d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:03:20, skipping insertion in model container [2024-11-14 04:03:20,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:03:19" (2/3) ... [2024-11-14 04:03:20,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5405656d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:03:20, skipping insertion in model container [2024-11-14 04:03:20,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:03:20" (3/3) ... [2024-11-14 04:03:20,893 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-015.c [2024-11-14 04:03:20,913 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:03:20,915 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-015.c that has 2 procedures, 176 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 04:03:20,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:03:20,997 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;@2f6b2453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:03:20,997 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:03:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-14 04:03:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2024-11-14 04:03:21,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:21,049 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 120, 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, 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, 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, 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, 1, 1, 1, 1] [2024-11-14 04:03:21,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:03:21,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -742393268, now seen corresponding path program 1 times [2024-11-14 04:03:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:03:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031472826] [2024-11-14 04:03:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:03:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:03:21,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:03:21,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 04:03:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:21,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 04:03:21,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 1174 proven. 0 refuted. 0 times theorem prover too weak. 27386 trivial. 0 not checked. [2024-11-14 04:03:21,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:03:21,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:03:21,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031472826] [2024-11-14 04:03:21,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031472826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:03:21,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:03:21,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:03:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268434339] [2024-11-14 04:03:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:03:21,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:03:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:03:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:03:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:03:22,002 INFO L87 Difference]: Start difference. First operand has 176 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2024-11-14 04:03:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:22,070 INFO L93 Difference]: Finished difference Result 346 states and 704 transitions. [2024-11-14 04:03:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:03:22,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 648 [2024-11-14 04:03:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:22,082 INFO L225 Difference]: With dead ends: 346 [2024-11-14 04:03:22,082 INFO L226 Difference]: Without dead ends: 173 [2024-11-14 04:03:22,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:03:22,091 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:22,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:03:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-14 04:03:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-14 04:03:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 51 states have (on average 1.0) internal successors, (51), 51 states have internal predecessors, (51), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-14 04:03:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 291 transitions. [2024-11-14 04:03:22,225 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 291 transitions. Word has length 648 [2024-11-14 04:03:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:22,226 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 291 transitions. [2024-11-14 04:03:22,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2024-11-14 04:03:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 291 transitions. [2024-11-14 04:03:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2024-11-14 04:03:22,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:22,258 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 120, 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, 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, 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, 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, 1, 1, 1, 1] [2024-11-14 04:03:22,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 04:03:22,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:03:22,459 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:03:22,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash 818839756, now seen corresponding path program 1 times [2024-11-14 04:03:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:03:22,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068500948] [2024-11-14 04:03:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:22,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:03:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:03:22,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 04:03:22,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5680add4-eab8-4ace-aae2-c2e7b08ef6aa/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 04:03:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:29,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-11-14 04:03:29,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:57,214 WARN L286 SmtUtils]: Spent 12.15s on a formula simplification that was a NOOP. DAG size: 188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)