./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/just_assert.i --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_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/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_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/just_assert.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/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_df0fa483-edfc-4598-ad7e-4a9afb129ce0/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 f4856af8a72b91c6e7b44602086b8ba797f9db842602427d6c7c781dd8a0eda2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:25:06,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:25:06,604 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:25:06,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:25:06,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:25:06,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:25:06,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:25:06,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:25:06,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:25:06,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:25:06,657 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:25:06,658 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:25:06,658 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:25:06,658 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:25:06,658 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:25:06,658 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:25:06,658 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:25:06,659 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:25:06,659 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:25:06,659 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:25:06,659 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:25:06,659 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:25:06,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:25:06,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:25:06,659 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:25:06,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:25:06,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:25:06,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:25:06,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:25:06,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:25:06,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:25:06,662 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:25:06,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:25:06,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:25:06,663 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:25:06,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:25:06,663 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_df0fa483-edfc-4598-ad7e-4a9afb129ce0/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 -> f4856af8a72b91c6e7b44602086b8ba797f9db842602427d6c7c781dd8a0eda2 [2024-11-14 03:25:06,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:25:07,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:25:07,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:25:07,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:25:07,008 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:25:07,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-regression/just_assert.i Unable to find full path for "g++" [2024-11-14 03:25:08,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:25:09,105 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:25:09,109 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/sv-benchmarks/c/ldv-regression/just_assert.i [2024-11-14 03:25:09,116 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/data/b6e1df464/0ec2ee60bb004a1abc759f76c098ed07/FLAGe34d156b0 [2024-11-14 03:25:09,465 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/data/b6e1df464/0ec2ee60bb004a1abc759f76c098ed07 [2024-11-14 03:25:09,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:25:09,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:25:09,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:25:09,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:25:09,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:25:09,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cbb5cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09, skipping insertion in model container [2024-11-14 03:25:09,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:25:09,733 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_df0fa483-edfc-4598-ad7e-4a9afb129ce0/sv-benchmarks/c/ldv-regression/just_assert.i[300,313] [2024-11-14 03:25:09,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:25:09,753 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:25:09,766 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_df0fa483-edfc-4598-ad7e-4a9afb129ce0/sv-benchmarks/c/ldv-regression/just_assert.i[300,313] [2024-11-14 03:25:09,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:25:09,781 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:25:09,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09 WrapperNode [2024-11-14 03:25:09,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:25:09,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:25:09,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:25:09,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:25:09,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,810 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2024-11-14 03:25:09,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:25:09,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:25:09,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:25:09,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:25:09,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:25:09,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:25:09,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:25:09,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:25:09,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (1/1) ... [2024-11-14 03:25:09,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:25:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:25:09,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:25:09,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:25:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:25:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:25:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:25:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:25:09,973 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:25:09,976 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:25:10,050 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2024-11-14 03:25:10,050 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:25:10,077 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:25:10,077 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 03:25:10,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:25:10 BoogieIcfgContainer [2024-11-14 03:25:10,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:25:10,080 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:25:10,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:25:10,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:25:10,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:25:09" (1/3) ... [2024-11-14 03:25:10,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f08071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:25:10, skipping insertion in model container [2024-11-14 03:25:10,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:25:09" (2/3) ... [2024-11-14 03:25:10,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f08071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:25:10, skipping insertion in model container [2024-11-14 03:25:10,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:25:10" (3/3) ... [2024-11-14 03:25:10,087 INFO L112 eAbstractionObserver]: Analyzing ICFG just_assert.i [2024-11-14 03:25:10,102 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:25:10,104 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG just_assert.i that has 1 procedures, 6 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 03:25:10,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:25:10,168 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;@20f78c12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:25:10,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:25:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 03:25:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 03:25:10,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:25:10,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 03:25:10,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:25:10,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:25:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash 45329, now seen corresponding path program 1 times [2024-11-14 03:25:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:25:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441058551] [2024-11-14 03:25:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:25:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:25:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:25:10,305 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 03:25:10,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:25:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441058551] [2024-11-14 03:25:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441058551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:25:10,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:25:10,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:25:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521463008] [2024-11-14 03:25:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:25:10,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:25:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:25:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:25:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:25:10,335 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 03:25:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:25:10,351 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2024-11-14 03:25:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:25:10,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-11-14 03:25:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:25:10,359 INFO L225 Difference]: With dead ends: 8 [2024-11-14 03:25:10,359 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:25:10,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 03:25:10,365 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:25:10,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:25:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:25:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:25:10,386 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 03:25:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:25:10,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2024-11-14 03:25:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:25:10,390 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:25:10,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 03:25:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:25:10,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:25:10,394 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:25:10,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:25:10,398 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 03:25:10,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 03:25:10,407 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:25:10,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:25:10 BoogieIcfgContainer [2024-11-14 03:25:10,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:25:10,418 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:25:10,418 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:25:10,418 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:25:10,419 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:25:10" (3/4) ... [2024-11-14 03:25:10,421 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 03:25:10,427 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-14 03:25:10,427 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 03:25:10,427 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-14 03:25:10,427 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:25:10,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:25:10,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 03:25:10,501 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:25:10,502 INFO L158 Benchmark]: Toolchain (without parser) took 1029.46ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 50.8MB in the end (delta: 41.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-14 03:25:10,503 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:25:10,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.39ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 81.9MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:25:10,503 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.10ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:25:10,504 INFO L158 Benchmark]: Boogie Preprocessor took 14.71ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 80.4MB in the end (delta: 486.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:25:10,504 INFO L158 Benchmark]: RCFGBuilder took 251.81ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 71.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:25:10,505 INFO L158 Benchmark]: TraceAbstraction took 336.96ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 55.2MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:25:10,505 INFO L158 Benchmark]: Witness Printer took 83.53ms. Allocated memory is still 117.4MB. Free memory was 54.8MB in the beginning and 50.8MB in the end (delta: 3.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:25:10,507 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.39ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 81.9MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.10ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.71ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 80.4MB in the end (delta: 486.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 251.81ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 71.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 336.96ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 55.2MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 83.53ms. Allocated memory is still 117.4MB. Free memory was 54.8MB in the beginning and 50.8MB in the end (delta: 3.9MB). 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: 10]: 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, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-14 03:25:10,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0fa483-edfc-4598-ad7e-4a9afb129ce0/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