./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/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_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:05:59,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:05:59,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-14 04:05:59,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:05:59,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:05:59,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:05:59,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:05:59,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:05:59,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:05:59,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:05:59,903 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:05:59,903 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:05:59,903 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:05:59,903 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:05:59,903 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:05:59,904 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:05:59,904 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:05:59,904 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:05:59,904 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:05:59,905 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:05:59,905 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:05:59,905 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:05:59,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:05:59,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:05:59,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:05:59,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:05:59,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:05:59,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:05:59,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:05:59,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:05:59,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:05:59,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:05:59,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:05:59,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:05:59,910 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_260ed7f4-f3c1-424f-910a-981141098d21/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2024-11-14 04:06:00,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:06:00,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:06:00,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:06:00,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:06:00,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:06:00,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c Unable to find full path for "g++" [2024-11-14 04:06:02,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:06:02,689 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:06:02,690 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2024-11-14 04:06:02,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/data/f3bf746b1/c42a2f5aaf2742939b3c6b601d7ff8d2/FLAG50c0cec9e [2024-11-14 04:06:02,732 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/data/f3bf746b1/c42a2f5aaf2742939b3c6b601d7ff8d2 [2024-11-14 04:06:02,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:06:02,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:06:02,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:06:02,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:06:02,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:06:02,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:02,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3675a975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02, skipping insertion in model container [2024-11-14 04:06:02,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:02,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:06:02,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:06:02,943 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:06:02,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:06:02,977 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:06:02,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02 WrapperNode [2024-11-14 04:06:02,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:06:02,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:06:02,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:06:02,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:06:02,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:02,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,010 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2024-11-14 04:06:03,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:06:03,013 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:06:03,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:06:03,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:06:03,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:06:03,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:06:03,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:06:03,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:06:03,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (1/1) ... [2024-11-14 04:06:03,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:06:03,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:03,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:06:03,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:06:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure unlock [2024-11-14 04:06:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock [2024-11-14 04:06:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure lock [2024-11-14 04:06:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure lock [2024-11-14 04:06:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:06:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:06:03,190 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:06:03,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:06:03,376 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-14 04:06:03,377 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:06:03,410 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:06:03,410 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:06:03,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:06:03 BoogieIcfgContainer [2024-11-14 04:06:03,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:06:03,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:06:03,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:06:03,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:06:03,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:06:02" (1/3) ... [2024-11-14 04:06:03,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127590c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:06:03, skipping insertion in model container [2024-11-14 04:06:03,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:02" (2/3) ... [2024-11-14 04:06:03,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127590c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:06:03, skipping insertion in model container [2024-11-14 04:06:03,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:06:03" (3/3) ... [2024-11-14 04:06:03,422 INFO L112 eAbstractionObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2024-11-14 04:06:03,440 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:06:03,441 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2024-11-14 04:06:03,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:06:03,527 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;@3928c66c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:06:03,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 04:06:03,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:06:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 04:06:03,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:03,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:03,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:03,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1589653680, now seen corresponding path program 1 times [2024-11-14 04:06:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239524552] [2024-11-14 04:06:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:03,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239524552] [2024-11-14 04:06:03,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239524552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:03,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:03,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293919572] [2024-11-14 04:06:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:03,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:06:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:03,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:06:03,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:03,815 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:06:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:03,882 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-11-14 04:06:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:06:03,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 04:06:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:03,888 INFO L225 Difference]: With dead ends: 48 [2024-11-14 04:06:03,888 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 04:06:03,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:03,894 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:03,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 04:06:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-14 04:06:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:06:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-14 04:06:03,928 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 9 [2024-11-14 04:06:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:03,929 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-14 04:06:03,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:06:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-14 04:06:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 04:06:03,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:03,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:03,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:06:03,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:03,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2034623762, now seen corresponding path program 1 times [2024-11-14 04:06:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:03,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875294908] [2024-11-14 04:06:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:03,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:03,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875294908] [2024-11-14 04:06:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875294908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606199865] [2024-11-14 04:06:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:03,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:06:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:06:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:03,995 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:06:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:04,039 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2024-11-14 04:06:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:06:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-14 04:06:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:04,041 INFO L225 Difference]: With dead ends: 28 [2024-11-14 04:06:04,041 INFO L226 Difference]: Without dead ends: 27 [2024-11-14 04:06:04,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:04,042 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:04,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-14 04:06:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-14 04:06:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:06:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-14 04:06:04,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2024-11-14 04:06:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:04,055 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-14 04:06:04,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:06:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-14 04:06:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 04:06:04,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:04,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:04,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:06:04,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:04,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -555318825, now seen corresponding path program 1 times [2024-11-14 04:06:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952815618] [2024-11-14 04:06:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:04,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:04,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952815618] [2024-11-14 04:06:04,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952815618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:04,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:04,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:04,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324370386] [2024-11-14 04:06:04,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:04,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:06:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:06:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:04,143 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:04,188 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2024-11-14 04:06:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:06:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2024-11-14 04:06:04,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:04,190 INFO L225 Difference]: With dead ends: 26 [2024-11-14 04:06:04,190 INFO L226 Difference]: Without dead ends: 25 [2024-11-14 04:06:04,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:04,191 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:04,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-14 04:06:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-14 04:06:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:06:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-14 04:06:04,200 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 12 [2024-11-14 04:06:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:04,201 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-14 04:06:04,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:04,203 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-14 04:06:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:06:04,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:04,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:04,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:06:04,204 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:04,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash -35014294, now seen corresponding path program 1 times [2024-11-14 04:06:04,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084870074] [2024-11-14 04:06:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:04,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:04,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084870074] [2024-11-14 04:06:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084870074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:04,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049039698] [2024-11-14 04:06:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:04,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:06:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:06:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:04,320 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:04,364 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2024-11-14 04:06:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:06:04,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-11-14 04:06:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:04,365 INFO L225 Difference]: With dead ends: 34 [2024-11-14 04:06:04,365 INFO L226 Difference]: Without dead ends: 33 [2024-11-14 04:06:04,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:04,366 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:04,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 56 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-14 04:06:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-14 04:06:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:06:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-14 04:06:04,375 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 13 [2024-11-14 04:06:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:04,375 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-14 04:06:04,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-14 04:06:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:06:04,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:04,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:06:04,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:06:04,377 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:04,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash 194030849, now seen corresponding path program 1 times [2024-11-14 04:06:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727278210] [2024-11-14 04:06:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:06:04,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:04,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727278210] [2024-11-14 04:06:04,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727278210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:04,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339446090] [2024-11-14 04:06:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:04,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:04,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:04,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:04,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:06:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:04,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:06:04,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:06:04,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:06:04,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339446090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1065306120] [2024-11-14 04:06:04,927 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:06:04,928 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:04,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:04,937 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:04,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:06,050 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:06:06,065 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:06:06,074 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:07,099 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '537#(and (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_19| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_19| 2147483648)) (<= |v_ULTIMATE.start_main_#t~nondet4#1_19| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet4#1_19| 0)))) (<= 0 |ULTIMATE.start_main_~old~0#1|) (not (= ~LOCK~0 1)))' at error location [2024-11-14 04:06:07,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:07,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:07,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-14 04:06:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126442931] [2024-11-14 04:06:07,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:07,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:06:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:06:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:06:07,107 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 04:06:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:07,240 INFO L93 Difference]: Finished difference Result 58 states and 79 transitions. [2024-11-14 04:06:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:06:07,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 25 [2024-11-14 04:06:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:07,242 INFO L225 Difference]: With dead ends: 58 [2024-11-14 04:06:07,242 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 04:06:07,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2024-11-14 04:06:07,244 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:07,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:06:07,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 04:06:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-14 04:06:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 04:06:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2024-11-14 04:06:07,254 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 25 [2024-11-14 04:06:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:07,255 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2024-11-14 04:06:07,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 04:06:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2024-11-14 04:06:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 04:06:07,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:07,257 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2024-11-14 04:06:07,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:07,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:07,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:07,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1145997510, now seen corresponding path program 2 times [2024-11-14 04:06:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826509012] [2024-11-14 04:06:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:06:07,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826509012] [2024-11-14 04:06:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826509012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783430495] [2024-11-14 04:06:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:06:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:07,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:07,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:06:07,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 04:06:07,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:06:07,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:06:07,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:06:08,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:06:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783430495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [666226236] [2024-11-14 04:06:08,503 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:06:08,503 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:08,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:08,504 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:08,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:09,221 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:06:09,232 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:06:09,236 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:10,117 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1081#(and (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_28| Int)) (and (not (= |v_ULTIMATE.start_main_#t~nondet4#1_28| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_28| 2147483648)) (<= |v_ULTIMATE.start_main_#t~nondet4#1_28| 2147483647))) (<= 0 |ULTIMATE.start_main_~old~0#1|) (not (= ~LOCK~0 1)))' at error location [2024-11-14 04:06:10,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:10,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:10,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-14 04:06:10,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863737787] [2024-11-14 04:06:10,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:10,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 04:06:10,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:10,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 04:06:10,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 04:06:10,121 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-14 04:06:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:10,337 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-14 04:06:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:06:10,338 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 61 [2024-11-14 04:06:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:10,340 INFO L225 Difference]: With dead ends: 106 [2024-11-14 04:06:10,340 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 04:06:10,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 04:06:10,342 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 45 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:10,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 107 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:06:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 04:06:10,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-14 04:06:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-14 04:06:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 142 transitions. [2024-11-14 04:06:10,370 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 142 transitions. Word has length 61 [2024-11-14 04:06:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:10,370 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 142 transitions. [2024-11-14 04:06:10,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-14 04:06:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 142 transitions. [2024-11-14 04:06:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-14 04:06:10,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:10,377 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1] [2024-11-14 04:06:10,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:06:10,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 04:06:10,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:10,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1931756752, now seen corresponding path program 3 times [2024-11-14 04:06:10,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:10,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919785203] [2024-11-14 04:06:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:10,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 04:06:11,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:11,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919785203] [2024-11-14 04:06:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919785203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:11,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087142400] [2024-11-14 04:06:11,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:06:11,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:11,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:11,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:11,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:06:11,835 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:06:11,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:06:11,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:06:11,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 04:06:12,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 430 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 04:06:13,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087142400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:13,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798236451] [2024-11-14 04:06:13,164 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:06:13,164 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:13,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:13,164 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:13,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:13,588 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:06:13,598 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:06:13,602 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:14,505 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2201#(and (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_43| Int)) (and (not (= |v_ULTIMATE.start_main_#t~nondet4#1_43| 0)) (<= |v_ULTIMATE.start_main_#t~nondet4#1_43| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_43| 2147483648)))) (<= 0 |ULTIMATE.start_main_~old~0#1|) (not (= ~LOCK~0 1)))' at error location [2024-11-14 04:06:14,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:14,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:14,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-14 04:06:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416614506] [2024-11-14 04:06:14,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:14,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-14 04:06:14,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-14 04:06:14,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=2812, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 04:06:14,513 INFO L87 Difference]: Start difference. First operand 105 states and 142 transitions. Second operand has 46 states, 45 states have (on average 3.022222222222222) internal successors, (136), 46 states have internal predecessors, (136), 22 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 22 states have call predecessors, (44), 22 states have call successors, (44) [2024-11-14 04:06:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:14,916 INFO L93 Difference]: Finished difference Result 202 states and 286 transitions. [2024-11-14 04:06:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-14 04:06:14,917 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.022222222222222) internal successors, (136), 46 states have internal predecessors, (136), 22 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 22 states have call predecessors, (44), 22 states have call successors, (44) Word has length 133 [2024-11-14 04:06:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:14,919 INFO L225 Difference]: With dead ends: 202 [2024-11-14 04:06:14,919 INFO L226 Difference]: Without dead ends: 201 [2024-11-14 04:06:14,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=610, Invalid=2812, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 04:06:14,921 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 119 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:14,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 172 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:06:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-14 04:06:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-14 04:06:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 151 states have internal predecessors, (178), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-14 04:06:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 274 transitions. [2024-11-14 04:06:14,939 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 274 transitions. Word has length 133 [2024-11-14 04:06:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:14,940 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 274 transitions. [2024-11-14 04:06:14,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.022222222222222) internal successors, (136), 46 states have internal predecessors, (136), 22 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 22 states have call predecessors, (44), 22 states have call successors, (44) [2024-11-14 04:06:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 274 transitions. [2024-11-14 04:06:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-14 04:06:14,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:14,951 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1] [2024-11-14 04:06:14,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:15,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:15,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:15,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:15,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1702179100, now seen corresponding path program 4 times [2024-11-14 04:06:15,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:15,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487185874] [2024-11-14 04:06:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-14 04:06:18,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487185874] [2024-11-14 04:06:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487185874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762062737] [2024-11-14 04:06:18,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:06:18,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:18,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:18,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:06:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:18,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 04:06:18,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-14 04:06:18,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3014 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-14 04:06:21,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762062737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [469279670] [2024-11-14 04:06:21,195 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:06:21,196 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:21,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:21,197 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:21,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:21,530 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:06:21,538 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:06:21,541 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:22,588 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4473#(and (<= 0 |ULTIMATE.start_main_~old~0#1|) (not (= ~LOCK~0 1)) (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_70| Int)) (and (not (= |v_ULTIMATE.start_main_#t~nondet4#1_70| 0)) (<= |v_ULTIMATE.start_main_#t~nondet4#1_70| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_70| 2147483648)))))' at error location [2024-11-14 04:06:22,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:22,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2024-11-14 04:06:22,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451549129] [2024-11-14 04:06:22,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:22,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-14 04:06:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-14 04:06:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2338, Invalid=9004, Unknown=0, NotChecked=0, Total=11342 [2024-11-14 04:06:22,600 INFO L87 Difference]: Start difference. First operand 201 states and 274 transitions. Second operand has 94 states, 93 states have (on average 3.010752688172043) internal successors, (280), 94 states have internal predecessors, (280), 46 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 46 states have call predecessors, (92), 46 states have call successors, (92) [2024-11-14 04:06:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:23,477 INFO L93 Difference]: Finished difference Result 394 states and 562 transitions. [2024-11-14 04:06:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-14 04:06:23,478 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.010752688172043) internal successors, (280), 94 states have internal predecessors, (280), 46 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 46 states have call predecessors, (92), 46 states have call successors, (92) Word has length 277 [2024-11-14 04:06:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:23,483 INFO L225 Difference]: With dead ends: 394 [2024-11-14 04:06:23,484 INFO L226 Difference]: Without dead ends: 393 [2024-11-14 04:06:23,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4307 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2338, Invalid=9004, Unknown=0, NotChecked=0, Total=11342 [2024-11-14 04:06:23,489 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 225 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:23,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 296 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:06:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-14 04:06:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2024-11-14 04:06:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 294 states have (on average 1.1768707482993197) internal successors, (346), 295 states have internal predecessors, (346), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-14 04:06:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 538 transitions. [2024-11-14 04:06:23,534 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 538 transitions. Word has length 277 [2024-11-14 04:06:23,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:23,535 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 538 transitions. [2024-11-14 04:06:23,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.010752688172043) internal successors, (280), 94 states have internal predecessors, (280), 46 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 46 states have call predecessors, (92), 46 states have call successors, (92) [2024-11-14 04:06:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 538 transitions. [2024-11-14 04:06:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2024-11-14 04:06:23,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:23,548 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 46, 46, 1, 1, 1] [2024-11-14 04:06:23,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:23,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:23,753 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:23,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1109644532, now seen corresponding path program 5 times [2024-11-14 04:06:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201194405] [2024-11-14 04:06:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:23,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12926 backedges. 0 proven. 8602 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-14 04:06:33,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201194405] [2024-11-14 04:06:33,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201194405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041880522] [2024-11-14 04:06:33,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:06:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:33,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:33,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:33,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:06:38,166 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-14 04:06:38,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:06:38,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-14 04:06:38,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12926 backedges. 0 proven. 8602 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-14 04:06:38,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12926 backedges. 0 proven. 8602 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-14 04:06:48,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041880522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1230725004] [2024-11-14 04:06:48,053 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:06:48,053 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:48,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:48,053 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:48,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:48,405 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:06:48,411 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:06:48,413 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:49,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9049#(and (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_121| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet4#1_121| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet4#1_121| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_121| 2147483648)))) (<= 0 |ULTIMATE.start_main_~old~0#1|) (not (= ~LOCK~0 1)))' at error location [2024-11-14 04:06:49,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:49,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2024-11-14 04:06:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067309951] [2024-11-14 04:06:49,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:49,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2024-11-14 04:06:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:49,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2024-11-14 04:06:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9250, Invalid=31756, Unknown=0, NotChecked=0, Total=41006 [2024-11-14 04:06:49,860 INFO L87 Difference]: Start difference. First operand 393 states and 538 transitions. Second operand has 190 states, 189 states have (on average 3.005291005291005) internal successors, (568), 190 states have internal predecessors, (568), 94 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 94 states have call predecessors, (188), 94 states have call successors, (188) [2024-11-14 04:06:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:52,068 INFO L93 Difference]: Finished difference Result 778 states and 1114 transitions. [2024-11-14 04:06:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-11-14 04:06:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 3.005291005291005) internal successors, (568), 190 states have internal predecessors, (568), 94 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 94 states have call predecessors, (188), 94 states have call successors, (188) Word has length 565 [2024-11-14 04:06:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:52,076 INFO L225 Difference]: With dead ends: 778 [2024-11-14 04:06:52,076 INFO L226 Difference]: Without dead ends: 777 [2024-11-14 04:06:52,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1587 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14459 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=9250, Invalid=31756, Unknown=0, NotChecked=0, Total=41006 [2024-11-14 04:06:52,083 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 431 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:52,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 354 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:06:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-14 04:06:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2024-11-14 04:06:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 582 states have (on average 1.1718213058419245) internal successors, (682), 583 states have internal predecessors, (682), 192 states have call successors, (192), 2 states have call predecessors, (192), 2 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-14 04:06:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1066 transitions. [2024-11-14 04:06:52,163 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1066 transitions. Word has length 565 [2024-11-14 04:06:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:52,165 INFO L471 AbstractCegarLoop]: Abstraction has 777 states and 1066 transitions. [2024-11-14 04:06:52,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 3.005291005291005) internal successors, (568), 190 states have internal predecessors, (568), 94 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 94 states have call predecessors, (188), 94 states have call successors, (188) [2024-11-14 04:06:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1066 transitions. [2024-11-14 04:06:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2024-11-14 04:06:52,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:52,219 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 95, 95, 95, 95, 95, 94, 94, 1, 1, 1] [2024-11-14 04:06:52,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:06:52,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:52,420 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:06:52,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1934623580, now seen corresponding path program 6 times [2024-11-14 04:06:52,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:52,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610326352] [2024-11-14 04:06:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 53486 backedges. 0 proven. 35626 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2024-11-14 04:07:29,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610326352] [2024-11-14 04:07:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610326352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:07:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801030092] [2024-11-14 04:07:29,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:07:29,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:07:29,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:07:29,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:07:29,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:10:30,767 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:10:30,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:10:30,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-11-14 04:10:30,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 53486 backedges. 0 proven. 35626 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2024-11-14 04:10:31,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 53486 backedges. 0 proven. 35626 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2024-11-14 04:11:02,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801030092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:02,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [952535572] [2024-11-14 04:11:02,714 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:11:02,714 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:02,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:02,715 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:02,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:02,982 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:11:02,988 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:11:02,991 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:05,149 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18233#(and (<= 0 |ULTIMATE.start_main_~old~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_220| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_220| 2147483648)) (<= |v_ULTIMATE.start_main_#t~nondet4#1_220| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet4#1_220| 0)))) (not (= ~LOCK~0 1)))' at error location [2024-11-14 04:11:05,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:05,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:05,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2024-11-14 04:11:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385521445] [2024-11-14 04:11:05,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:05,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2024-11-14 04:11:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2024-11-14 04:11:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36898, Invalid=118732, Unknown=0, NotChecked=0, Total=155630 [2024-11-14 04:11:05,180 INFO L87 Difference]: Start difference. First operand 777 states and 1066 transitions. Second operand has 382 states, 381 states have (on average 3.0026246719160103) internal successors, (1144), 382 states have internal predecessors, (1144), 190 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 190 states have call predecessors, (380), 190 states have call successors, (380) [2024-11-14 04:11:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:17,325 INFO L93 Difference]: Finished difference Result 1546 states and 2218 transitions. [2024-11-14 04:11:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2024-11-14 04:11:17,326 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 3.0026246719160103) internal successors, (1144), 382 states have internal predecessors, (1144), 190 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 190 states have call predecessors, (380), 190 states have call successors, (380) Word has length 1141 [2024-11-14 04:11:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:17,337 INFO L225 Difference]: With dead ends: 1546 [2024-11-14 04:11:17,337 INFO L226 Difference]: Without dead ends: 1545 [2024-11-14 04:11:17,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3612 GetRequests, 3219 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52043 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=36898, Invalid=118732, Unknown=0, NotChecked=0, Total=155630 [2024-11-14 04:11:17,349 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 815 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:17,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 604 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 04:11:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2024-11-14 04:11:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2024-11-14 04:11:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1158 states have (on average 1.1692573402417963) internal successors, (1354), 1159 states have internal predecessors, (1354), 384 states have call successors, (384), 2 states have call predecessors, (384), 2 states have return successors, (384), 384 states have call predecessors, (384), 384 states have call successors, (384) [2024-11-14 04:11:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2122 transitions. [2024-11-14 04:11:17,423 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2122 transitions. Word has length 1141 [2024-11-14 04:11:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:17,426 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 2122 transitions. [2024-11-14 04:11:17,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 3.0026246719160103) internal successors, (1144), 382 states have internal predecessors, (1144), 190 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 190 states have call predecessors, (380), 190 states have call successors, (380) [2024-11-14 04:11:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2122 transitions. [2024-11-14 04:11:17,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2294 [2024-11-14 04:11:17,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:17,484 INFO L215 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 190, 190, 1, 1, 1] [2024-11-14 04:11:17,684 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2024-11-14 04:11:17,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:17,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:17,766 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:11:17,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2138846204, now seen corresponding path program 7 times [2024-11-14 04:11:17,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:17,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841743561] [2024-11-14 04:11:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:17,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 217550 backedges. 0 proven. 144970 refuted. 0 times theorem prover too weak. 72580 trivial. 0 not checked. [2024-11-14 04:14:32,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841743561] [2024-11-14 04:14:32,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841743561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:14:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917367517] [2024-11-14 04:14:32,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:14:32,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:14:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:14:32,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:14:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:14:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:33,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 4973 conjuncts, 383 conjuncts are in the unsatisfiable core [2024-11-14 04:14:33,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 217550 backedges. 0 proven. 144970 refuted. 0 times theorem prover too weak. 72580 trivial. 0 not checked. [2024-11-14 04:14:35,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:16:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 217550 backedges. 0 proven. 144970 refuted. 0 times theorem prover too weak. 72580 trivial. 0 not checked. [2024-11-14 04:16:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917367517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:16:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [863319892] [2024-11-14 04:16:39,704 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:16:39,705 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:16:39,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:16:39,705 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:16:39,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:16:39,912 INFO L197 IcfgInterpreter]: Interpreting procedure lock with input of size 30 for LOIs [2024-11-14 04:16:39,917 INFO L197 IcfgInterpreter]: Interpreting procedure unlock with input of size 15 for LOIs [2024-11-14 04:16:39,919 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:16:44,123 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36633#(and (<= 0 |ULTIMATE.start_main_~old~0#1|) (exists ((|v_ULTIMATE.start_main_#t~nondet4#1_415| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet4#1_415| 2147483648)) (not (= |v_ULTIMATE.start_main_#t~nondet4#1_415| 0)) (<= |v_ULTIMATE.start_main_#t~nondet4#1_415| 2147483647))) (not (= ~LOCK~0 1)))' at error location [2024-11-14 04:16:44,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:16:44,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:16:44,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 765 [2024-11-14 04:16:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350899080] [2024-11-14 04:16:44,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:16:44,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2024-11-14 04:16:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:16:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2024-11-14 04:16:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147490, Invalid=458572, Unknown=0, NotChecked=0, Total=606062 [2024-11-14 04:16:44,206 INFO L87 Difference]: Start difference. First operand 1545 states and 2122 transitions. Second operand has 766 states, 765 states have (on average 3.0013071895424837) internal successors, (2296), 766 states have internal predecessors, (2296), 382 states have call successors, (764), 1 states have call predecessors, (764), 1 states have return successors, (764), 382 states have call predecessors, (764), 382 states have call successors, (764) [2024-11-14 04:19:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:19:51,328 INFO L93 Difference]: Finished difference Result 3082 states and 4426 transitions. [2024-11-14 04:19:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 766 states. [2024-11-14 04:19:51,331 INFO L78 Accepts]: Start accepts. Automaton has has 766 states, 765 states have (on average 3.0013071895424837) internal successors, (2296), 766 states have internal predecessors, (2296), 382 states have call successors, (764), 1 states have call predecessors, (764), 1 states have return successors, (764), 382 states have call predecessors, (764), 382 states have call successors, (764) Word has length 2293 [2024-11-14 04:19:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:19:51,354 INFO L225 Difference]: With dead ends: 3082 [2024-11-14 04:19:51,354 INFO L226 Difference]: Without dead ends: 3081 [2024-11-14 04:19:51,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7260 GetRequests, 6483 SyntacticMatches, 0 SemanticMatches, 777 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196331 ImplicationChecksByTransitivity, 169.5s TimeCoverageRelationStatistics Valid=147490, Invalid=458572, Unknown=0, NotChecked=0, Total=606062 [2024-11-14 04:19:51,400 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 2018 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:19:51,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 971 Invalid, 2754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-14 04:19:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2024-11-14 04:19:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3081. [2024-11-14 04:19:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 2310 states have (on average 1.1679653679653679) internal successors, (2698), 2311 states have internal predecessors, (2698), 768 states have call successors, (768), 2 states have call predecessors, (768), 2 states have return successors, (768), 768 states have call predecessors, (768), 768 states have call successors, (768) [2024-11-14 04:19:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4234 transitions. [2024-11-14 04:19:51,560 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4234 transitions. Word has length 2293 [2024-11-14 04:19:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:19:51,566 INFO L471 AbstractCegarLoop]: Abstraction has 3081 states and 4234 transitions. [2024-11-14 04:19:51,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 766 states, 765 states have (on average 3.0013071895424837) internal successors, (2296), 766 states have internal predecessors, (2296), 382 states have call successors, (764), 1 states have call predecessors, (764), 1 states have return successors, (764), 382 states have call predecessors, (764), 382 states have call successors, (764) [2024-11-14 04:19:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4234 transitions. [2024-11-14 04:19:51,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4598 [2024-11-14 04:19:51,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:19:51,747 INFO L215 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 383, 383, 383, 383, 383, 383, 382, 382, 1, 1, 1] [2024-11-14 04:19:51,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:19:51,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_260ed7f4-f3c1-424f-910a-981141098d21/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:19:51,948 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-14 04:19:51,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:19:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1290179900, now seen corresponding path program 8 times [2024-11-14 04:19:51,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:19:51,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216282839] [2024-11-14 04:19:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:19:51,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:19:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat