./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/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_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:43:40,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:43:40,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-14 02:43:40,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:43:40,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:43:40,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:43:40,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:43:40,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:43:40,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:43:40,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:43:40,676 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:43:40,676 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:43:40,676 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:43:40,676 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:43:40,676 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:43:40,677 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:43:40,677 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:43:40,677 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:43:40,677 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:43:40,677 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:43:40,677 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:43:40,677 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:43:40,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:43:40,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:43:40,678 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:43:40,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:43:40,679 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:43:40,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:43:40,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:43:40,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:43:40,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:43:40,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:43:40,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:43:40,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:43:40,680 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:43:40,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:43:40,680 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:43:40,680 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:43:40,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:43:40,680 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_4d17c825-8f35-421b-b967-93401dca593d/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 [2024-11-14 02:43:40,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:43:41,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:43:41,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:43:41,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:43:41,007 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:43:41,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i Unable to find full path for "g++" [2024-11-14 02:43:42,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:43:43,239 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:43:43,240 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/sv-benchmarks/c/memsafety-broom/sll-lst-shared.i [2024-11-14 02:43:43,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data/ee775f8b5/a8d415c3191c4fd0a0c0b4213bc9e09e/FLAGc9a55d5a9 [2024-11-14 02:43:43,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data/ee775f8b5/a8d415c3191c4fd0a0c0b4213bc9e09e [2024-11-14 02:43:43,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:43:43,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:43:43,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:43:43,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:43:43,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:43:43,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c339664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43, skipping insertion in model container [2024-11-14 02:43:43,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:43:43,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:43:43,737 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:43:43,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:43:43,838 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:43:43,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43 WrapperNode [2024-11-14 02:43:43,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:43:43,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:43:43,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:43:43,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:43:43,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,880 INFO L138 Inliner]: procedures = 121, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2024-11-14 02:43:43,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:43:43,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:43:43,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:43:43,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:43:43,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:43:43,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:43:43,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:43:43,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:43:43,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (1/1) ... [2024-11-14 02:43:43,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:43:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:43,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:43:43,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:43:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 02:43:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 02:43:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 02:43:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:43:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:43:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:43:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:43:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:43:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:43:44,113 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:43:44,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:43:44,460 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-14 02:43:44,460 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:43:44,522 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:43:44,522 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 02:43:44,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:43:44 BoogieIcfgContainer [2024-11-14 02:43:44,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:43:44,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:43:44,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:43:44,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:43:44,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:43:43" (1/3) ... [2024-11-14 02:43:44,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0e8bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:43:44, skipping insertion in model container [2024-11-14 02:43:44,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:43" (2/3) ... [2024-11-14 02:43:44,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0e8bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:43:44, skipping insertion in model container [2024-11-14 02:43:44,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:43:44" (3/3) ... [2024-11-14 02:43:44,534 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-shared.i [2024-11-14 02:43:44,550 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:43:44,551 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-lst-shared.i that has 2 procedures, 60 locations, 1 initial locations, 3 loop locations, and 29 error locations. [2024-11-14 02:43:44,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:43:44,616 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=None, 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;@2714132d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:43:44,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-14 02:43:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 27 states have (on average 2.259259259259259) internal successors, (61), 56 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:44,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:43:44,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:44,630 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:43:44,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:44,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash 4783860, now seen corresponding path program 1 times [2024-11-14 02:43:44,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830379122] [2024-11-14 02:43:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:44,899 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 02:43:44,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:44,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830379122] [2024-11-14 02:43:44,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830379122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:44,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:44,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915920738] [2024-11-14 02:43:44,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:44,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:44,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:44,939 INFO L87 Difference]: Start difference. First operand has 60 states, 27 states have (on average 2.259259259259259) internal successors, (61), 56 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:45,064 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2024-11-14 02:43:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:45,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 02:43:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:45,073 INFO L225 Difference]: With dead ends: 59 [2024-11-14 02:43:45,073 INFO L226 Difference]: Without dead ends: 58 [2024-11-14 02:43:45,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,079 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:45,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-14 02:43:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-14 02:43:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2024-11-14 02:43:45,121 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 4 [2024-11-14 02:43:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:45,124 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2024-11-14 02:43:45,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2024-11-14 02:43:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:43:45,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:45,125 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:43:45,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:43:45,125 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:45,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash 4783861, now seen corresponding path program 1 times [2024-11-14 02:43:45,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:45,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707891846] [2024-11-14 02:43:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:45,300 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 02:43:45,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707891846] [2024-11-14 02:43:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707891846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:45,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:45,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:45,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358036194] [2024-11-14 02:43:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:45,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:45,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,302 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:45,398 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2024-11-14 02:43:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 02:43:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:45,399 INFO L225 Difference]: With dead ends: 57 [2024-11-14 02:43:45,399 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 02:43:45,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,400 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:45,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 02:43:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-14 02:43:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 27 states have (on average 2.111111111111111) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-11-14 02:43:45,409 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 4 [2024-11-14 02:43:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:45,409 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-11-14 02:43:45,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-11-14 02:43:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 02:43:45,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:45,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:45,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:43:45,410 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:45,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash 785556620, now seen corresponding path program 1 times [2024-11-14 02:43:45,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:45,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169469410] [2024-11-14 02:43:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:45,549 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 02:43:45,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169469410] [2024-11-14 02:43:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169469410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:45,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:45,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621539854] [2024-11-14 02:43:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:45,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,553 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 02:43:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:45,661 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2024-11-14 02:43:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:45,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 7 [2024-11-14 02:43:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:45,664 INFO L225 Difference]: With dead ends: 60 [2024-11-14 02:43:45,664 INFO L226 Difference]: Without dead ends: 60 [2024-11-14 02:43:45,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,665 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:45,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 70 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-14 02:43:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2024-11-14 02:43:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 27 states have (on average 2.074074074074074) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-14 02:43:45,680 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 7 [2024-11-14 02:43:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:45,680 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-14 02:43:45,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 02:43:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-14 02:43:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 02:43:45,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:45,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:45,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:43:45,681 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:45,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 785556621, now seen corresponding path program 1 times [2024-11-14 02:43:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:45,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998898669] [2024-11-14 02:43:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:45,793 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 02:43:45,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:45,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998898669] [2024-11-14 02:43:45,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998898669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:45,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:45,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575308030] [2024-11-14 02:43:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:45,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,796 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 02:43:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:45,876 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2024-11-14 02:43:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:45,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 7 [2024-11-14 02:43:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:45,878 INFO L225 Difference]: With dead ends: 59 [2024-11-14 02:43:45,879 INFO L226 Difference]: Without dead ends: 59 [2024-11-14 02:43:45,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:45,879 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:45,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-14 02:43:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-14 02:43:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 27 states have (on average 2.037037037037037) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-14 02:43:45,891 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 7 [2024-11-14 02:43:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:45,891 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-14 02:43:45,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 02:43:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-14 02:43:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 02:43:45,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:45,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:45,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 02:43:45,892 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:45,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1417545037, now seen corresponding path program 1 times [2024-11-14 02:43:45,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580584249] [2024-11-14 02:43:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:46,103 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 02:43:46,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:46,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580584249] [2024-11-14 02:43:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580584249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:46,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:46,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:43:46,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639222373] [2024-11-14 02:43:46,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:46,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:43:46,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:43:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:46,105 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 02:43:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:46,251 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-11-14 02:43:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:43:46,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 8 [2024-11-14 02:43:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:46,253 INFO L225 Difference]: With dead ends: 56 [2024-11-14 02:43:46,254 INFO L226 Difference]: Without dead ends: 56 [2024-11-14 02:43:46,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:46,256 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:46,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-14 02:43:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2024-11-14 02:43:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-14 02:43:46,263 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 8 [2024-11-14 02:43:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:46,263 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-14 02:43:46,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 02:43:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-14 02:43:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 02:43:46,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:46,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:46,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 02:43:46,264 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:46,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1417545036, now seen corresponding path program 1 times [2024-11-14 02:43:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773179907] [2024-11-14 02:43:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:46,546 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 02:43:46,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:46,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773179907] [2024-11-14 02:43:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773179907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:46,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:46,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:43:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753631774] [2024-11-14 02:43:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:46,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:43:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:43:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:46,548 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 02:43:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:46,727 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-11-14 02:43:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:43:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 8 [2024-11-14 02:43:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:46,729 INFO L225 Difference]: With dead ends: 55 [2024-11-14 02:43:46,729 INFO L226 Difference]: Without dead ends: 55 [2024-11-14 02:43:46,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:46,733 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:46,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 139 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:43:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-14 02:43:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2024-11-14 02:43:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:46,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-14 02:43:46,738 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 8 [2024-11-14 02:43:46,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:46,738 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-14 02:43:46,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 02:43:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-14 02:43:46,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:43:46,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:46,742 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:46,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 02:43:46,743 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:46,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash 698192777, now seen corresponding path program 1 times [2024-11-14 02:43:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152134128] [2024-11-14 02:43:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:46,860 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 02:43:46,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152134128] [2024-11-14 02:43:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152134128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:46,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:46,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110646614] [2024-11-14 02:43:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:46,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:43:46,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:43:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:46,862 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 02:43:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:47,007 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-11-14 02:43:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:43:47,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2024-11-14 02:43:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:47,009 INFO L225 Difference]: With dead ends: 68 [2024-11-14 02:43:47,009 INFO L226 Difference]: Without dead ends: 68 [2024-11-14 02:43:47,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:47,011 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:47,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 104 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-14 02:43:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-11-14 02:43:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.868421052631579) internal successors, (71), 57 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:43:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-14 02:43:47,021 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 13 [2024-11-14 02:43:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:47,021 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-14 02:43:47,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 02:43:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-14 02:43:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 02:43:47,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:47,022 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:47,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 02:43:47,022 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:47,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:47,023 INFO L85 PathProgramCache]: Analyzing trace with hash 698192778, now seen corresponding path program 1 times [2024-11-14 02:43:47,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:47,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279926453] [2024-11-14 02:43:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:47,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:47,285 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 02:43:47,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279926453] [2024-11-14 02:43:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279926453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:47,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:43:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599937728] [2024-11-14 02:43:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:47,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:43:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:43:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:43:47,287 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 02:43:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:47,498 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2024-11-14 02:43:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:43:47,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 13 [2024-11-14 02:43:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:47,499 INFO L225 Difference]: With dead ends: 69 [2024-11-14 02:43:47,499 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 02:43:47,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:43:47,500 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:47,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 208 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:43:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 02:43:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2024-11-14 02:43:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 57 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:43:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-11-14 02:43:47,507 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 13 [2024-11-14 02:43:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:47,509 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-11-14 02:43:47,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 02:43:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-11-14 02:43:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 02:43:47,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:47,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:47,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 02:43:47,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:47,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash 169210300, now seen corresponding path program 1 times [2024-11-14 02:43:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477000364] [2024-11-14 02:43:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:47,643 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 02:43:47,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477000364] [2024-11-14 02:43:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477000364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:47,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:47,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:43:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529019188] [2024-11-14 02:43:47,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:47,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:43:47,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:47,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:43:47,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:43:47,645 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 02:43:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:47,764 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-11-14 02:43:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:43:47,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 14 [2024-11-14 02:43:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:47,767 INFO L225 Difference]: With dead ends: 65 [2024-11-14 02:43:47,767 INFO L226 Difference]: Without dead ends: 65 [2024-11-14 02:43:47,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:43:47,768 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:47,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 218 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-14 02:43:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-14 02:43:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.794871794871795) internal successors, (70), 58 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:43:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-14 02:43:47,777 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 14 [2024-11-14 02:43:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:47,777 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-14 02:43:47,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 02:43:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-14 02:43:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 02:43:47,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:47,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:47,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 02:43:47,779 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:47,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash 169141687, now seen corresponding path program 1 times [2024-11-14 02:43:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:47,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893575252] [2024-11-14 02:43:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:48,101 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 02:43:48,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893575252] [2024-11-14 02:43:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893575252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:48,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:43:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836242751] [2024-11-14 02:43:48,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:48,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:43:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:43:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:43:48,104 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 02:43:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:48,294 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-14 02:43:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:43:48,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 14 [2024-11-14 02:43:48,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:48,295 INFO L225 Difference]: With dead ends: 67 [2024-11-14 02:43:48,295 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 02:43:48,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:43:48,296 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:48,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:43:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 02:43:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 02:43:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 62 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:43:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-14 02:43:48,301 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 14 [2024-11-14 02:43:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:48,301 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-14 02:43:48,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 02:43:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-14 02:43:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 02:43:48,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:48,302 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:48,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 02:43:48,303 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:48,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash 993851097, now seen corresponding path program 1 times [2024-11-14 02:43:48,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:48,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786832598] [2024-11-14 02:43:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:48,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:48,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:48,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786832598] [2024-11-14 02:43:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786832598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:43:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705356078] [2024-11-14 02:43:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:48,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:43:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:43:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:48,493 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:48,672 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2024-11-14 02:43:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:43:48,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-11-14 02:43:48,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:48,673 INFO L225 Difference]: With dead ends: 67 [2024-11-14 02:43:48,673 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 02:43:48,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:43:48,674 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:48,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:43:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 02:43:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 02:43:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.697674418604651) internal successors, (73), 62 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:43:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2024-11-14 02:43:48,680 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 15 [2024-11-14 02:43:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:48,680 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2024-11-14 02:43:48,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:43:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2024-11-14 02:43:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 02:43:48,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:48,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:48,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 02:43:48,682 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:43:48,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash 993851098, now seen corresponding path program 1 times [2024-11-14 02:43:48,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:48,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964414902] [2024-11-14 02:43:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:48,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:49,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964414902] [2024-11-14 02:43:49,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964414902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:43:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909382004] [2024-11-14 02:43:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:49,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:49,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:49,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:49,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:43:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:49,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 02:43:49,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:49,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 02:43:49,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:43:49,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:43:49,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:43:49,560 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:43:49,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:43:49,679 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-14 02:43:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:43:49,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:43:49,728 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:43:49,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:43:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-14 02:43:49,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:49,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909382004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:43:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [908060329] [2024-11-14 02:43:49,939 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 02:43:49,939 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:43:49,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:43:49,948 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:43:49,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:43:50,872 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 127 for LOIs [2024-11-14 02:43:51,019 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:44:02,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1524#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_27| Int)) (and (or (and (not (= |ULTIMATE.start_create_~data~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_~data~0#1.base| 1) |#StackHeapBarrier|) (not (= |ULTIMATE.start_create_~sll~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_#t~ret8#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_55| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_56| (Array Int (Array Int Int)))) (= (store (store |v_#memory_$Pointer$.offset_56| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_56| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_56| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_56| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.offset_55| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_$Pointer$.offset_55|)) (not (= |ULTIMATE.start_create_#t~ret8#1.base| 0)) (<= (+ |ULTIMATE.start_create_~sll~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.base_53| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_55| (Array Int (Array Int Int)))) (= (store (store |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.base_55| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_$Pointer$.base_55|)) (exists ((|v_#memory_int_40| (Array Int (Array Int Int))) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_#memory_int_42| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_5| (Array Int (Array Int Int)))) (and (<= 0 (+ (select (select |v_#memory_int_41| |ULTIMATE.start_create_~data~0#1.base|) 0) 2147483648)) (= (store |v_#memory_int_41| |v_ULTIMATE.start_create_~now~0#1.base_27| (store (select |v_#memory_int_41| |v_ULTIMATE.start_create_~now~0#1.base_27|) 0 (select (select |v_old(#memory_int)_AFTER_CALL_5| |v_ULTIMATE.start_create_~now~0#1.base_27|) 0))) |v_old(#memory_int)_AFTER_CALL_5|) (= (store |v_#memory_int_40| |ULTIMATE.start_create_~data~0#1.base| (store (select |v_#memory_int_40| |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_int_41| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_int_41|) (= |v_#memory_int_40| (store |v_#memory_int_42| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_int_42| |ULTIMATE.start_create_~sll~0#1.base|) 8 (select (select |v_#memory_int_40| |ULTIMATE.start_create_~sll~0#1.base|) 8)))) (<= (select (select |v_#memory_int_41| |ULTIMATE.start_create_~data~0#1.base|) 0) 2147483647))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.offset_53| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_53| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.offset_53| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)))) (exists ((|v_#length_60| (Array Int Int))) (= |#length| (store |v_#length_60| |ULTIMATE.start_create_#t~ret8#1.base| 16))) (exists ((|v_#valid_75| (Array Int Int))) (and (= (select |v_#valid_75| |ULTIMATE.start_create_#t~ret8#1.base|) 0) (= (store |v_#valid_75| |ULTIMATE.start_create_#t~ret8#1.base| 1) |#valid|))) (exists ((|v_#length_62| (Array Int Int))) (<= 8 (select (store (store |v_#length_62| |ULTIMATE.start_create_~sll~0#1.base| 16) |ULTIMATE.start_create_~data~0#1.base| 4) |v_ULTIMATE.start_create_~now~0#1.base_27|))) (exists ((|v_#memory_int_39| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_39| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_int_39| |ULTIMATE.start_create_#t~ret8#1.base|) 8 (select (select |#memory_int| |ULTIMATE.start_create_#t~ret8#1.base|) 8))))) (exists ((|v_#valid_73| (Array Int Int))) (and (= (select |v_#valid_73| |ULTIMATE.start_create_~data~0#1.base|) 0) (= (select |v_#valid_73| |ULTIMATE.start_create_~sll~0#1.base|) 0))) (exists ((|v_#memory_$Pointer$.base_56| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_56| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.base_56| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)))) (exists ((|v_ULTIMATE.start_create_#t~nondet7#1_12| Int)) (and (<= |v_ULTIMATE.start_create_#t~nondet7#1_12| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet7#1_12| 2147483648)) (not (= |v_ULTIMATE.start_create_#t~nondet7#1_12| 0)))) (= |ULTIMATE.start_create_~sll~0#1.base| |v_ULTIMATE.start_create_~now~0#1.base_27|)) (and (exists ((|v_#memory_$Pointer$.base_57| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_57| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.base_57| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)) |#memory_$Pointer$.base|)) (exists ((|v_#memory_int_40| (Array Int (Array Int Int))) (|v_#memory_int_41| (Array Int (Array Int Int))) (|v_old(#memory_int)_AFTER_CALL_6| (Array Int (Array Int Int))) (|v_#memory_int_39| (Array Int (Array Int Int)))) (and (<= 0 (+ (select (select |v_#memory_int_41| |ULTIMATE.start_create_~data~0#1.base|) 0) 2147483648)) (= (store |v_#memory_int_40| |ULTIMATE.start_create_~data~0#1.base| (store (select |v_#memory_int_40| |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_int_41| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_int_41|) (= (store |v_#memory_int_41| |v_ULTIMATE.start_create_~now~0#1.base_27| (store (select |v_#memory_int_41| |v_ULTIMATE.start_create_~now~0#1.base_27|) 0 (select (select |v_old(#memory_int)_AFTER_CALL_6| |v_ULTIMATE.start_create_~now~0#1.base_27|) 0))) |v_old(#memory_int)_AFTER_CALL_6|) (<= (select (select |v_#memory_int_41| |ULTIMATE.start_create_~data~0#1.base|) 0) 2147483647) (= (store |v_#memory_int_39| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_int_39| |ULTIMATE.start_create_~sll~0#1.base|) 8 (select (select |v_#memory_int_40| |ULTIMATE.start_create_~sll~0#1.base|) 8))) |v_#memory_int_40|))) (not (= |ULTIMATE.start_create_~data~0#1.base| 0)) (exists ((|v_#valid_76| (Array Int Int))) (and (= (select |v_#valid_76| |ULTIMATE.start_create_#t~ret8#1.base|) 0) (= (store |v_#valid_76| |ULTIMATE.start_create_#t~ret8#1.base| 1) |#valid|))) (<= (+ |ULTIMATE.start_create_~data~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_int_43| (Array Int (Array Int Int)))) (= (store |v_#memory_int_43| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_int_43| |ULTIMATE.start_create_#t~ret8#1.base|) 8 (select (select |#memory_int| |ULTIMATE.start_create_#t~ret8#1.base|) 8))) |#memory_int|)) (exists ((|v_#length_60| (Array Int Int))) (<= 8 (select (store (store |v_#length_60| |ULTIMATE.start_create_~sll~0#1.base| 16) |ULTIMATE.start_create_~data~0#1.base| 4) |v_ULTIMATE.start_create_~now~0#1.base_27|))) (not (= |ULTIMATE.start_create_~sll~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_#t~ret8#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#length_63| (Array Int Int))) (= (store |v_#length_63| |ULTIMATE.start_create_#t~ret8#1.base| 16) |#length|)) (not (= |ULTIMATE.start_create_#t~ret8#1.base| 0)) (<= (+ |ULTIMATE.start_create_~sll~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.base_53| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_55| (Array Int (Array Int Int)))) (= (store (store |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_53| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.base_55| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_$Pointer$.base_55|)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.offset_53| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_53| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.offset_53| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)))) (exists ((|v_#memory_$Pointer$.offset_55| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_57| (Array Int (Array Int Int)))) (= |v_#memory_$Pointer$.offset_55| (store (store |v_#memory_$Pointer$.offset_57| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_57| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_57| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_57| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.offset_55| |ULTIMATE.start_create_~data~0#1.base|) 0))))) (exists ((|v_#valid_73| (Array Int Int))) (and (= (select |v_#valid_73| |ULTIMATE.start_create_~data~0#1.base|) 0) (= (select |v_#valid_73| |ULTIMATE.start_create_~sll~0#1.base|) 0))) (exists ((|v_ULTIMATE.start_create_#t~nondet7#1_12| Int)) (and (<= |v_ULTIMATE.start_create_#t~nondet7#1_12| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet7#1_12| 2147483648)) (not (= |v_ULTIMATE.start_create_#t~nondet7#1_12| 0)))) (= |ULTIMATE.start_create_~sll~0#1.base| |v_ULTIMATE.start_create_~now~0#1.base_27|))) (<= (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_27|) 15))) (= |ULTIMATE.start_create_~sll~0#1.offset| 0) (= |ULTIMATE.start_create_~data~0#1.offset| 0) (= |ULTIMATE.start_create_#t~ret8#1.offset| 0))' at error location [2024-11-14 02:44:02,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:44:02,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:44:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2024-11-14 02:44:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105349331] [2024-11-14 02:44:02,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:44:02,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 02:44:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 02:44:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=607, Unknown=2, NotChecked=50, Total=756 [2024-11-14 02:44:02,841 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 15 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 02:44:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:03,297 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2024-11-14 02:44:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:44:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 15 [2024-11-14 02:44:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:03,299 INFO L225 Difference]: With dead ends: 69 [2024-11-14 02:44:03,299 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 02:44:03,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=110, Invalid=704, Unknown=2, NotChecked=54, Total=870 [2024-11-14 02:44:03,300 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:03,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 214 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 313 Invalid, 0 Unknown, 64 Unchecked, 0.3s Time] [2024-11-14 02:44:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 02:44:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-14 02:44:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.627906976744186) internal successors, (70), 62 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2024-11-14 02:44:03,305 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 15 [2024-11-14 02:44:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:03,305 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2024-11-14 02:44:03,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 02:44:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2024-11-14 02:44:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 02:44:03,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:03,307 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:03,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:44:03,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:03,511 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:03,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -663540431, now seen corresponding path program 1 times [2024-11-14 02:44:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:03,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308313785] [2024-11-14 02:44:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:04,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308313785] [2024-11-14 02:44:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308313785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:44:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676928070] [2024-11-14 02:44:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:04,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:04,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:44:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:04,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 02:44:04,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:04,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:44:04,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 02:44:04,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 02:44:04,314 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:44:04,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:44:04,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 02:44:04,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 02:44:04,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:44:04,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-14 02:44:04,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:44:04,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-14 02:44:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:04,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:04,667 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_290 (Array Int Int)) (v_ArrVal_294 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_290))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_294))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_293 Int) (v_ArrVal_289 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_289))) (store .cse2 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_293))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 0)))) is different from false [2024-11-14 02:44:04,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:44:04,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-14 02:44:04,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-14 02:44:04,947 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-14 02:44:04,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-14 02:44:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676928070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [201447295] [2024-11-14 02:44:04,970 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 02:44:04,970 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:44:04,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:44:04,971 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:44:04,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:44:05,458 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 02:44:05,486 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:44:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [201447295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:44:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 10, 10] total 32 [2024-11-14 02:44:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856929649] [2024-11-14 02:44:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:10,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 02:44:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 02:44:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=808, Unknown=2, NotChecked=58, Total=992 [2024-11-14 02:44:10,043 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 02:44:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:11,642 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2024-11-14 02:44:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 02:44:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 16 [2024-11-14 02:44:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:11,644 INFO L225 Difference]: With dead ends: 73 [2024-11-14 02:44:11,644 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 02:44:11,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=124, Invalid=808, Unknown=2, NotChecked=58, Total=992 [2024-11-14 02:44:11,645 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:11,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 117 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 02:44:11,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 02:44:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-14 02:44:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.608695652173913) internal successors, (74), 65 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2024-11-14 02:44:11,649 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 16 [2024-11-14 02:44:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:11,649 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2024-11-14 02:44:11,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 02:44:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2024-11-14 02:44:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 02:44:11,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:11,650 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:11,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 02:44:11,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 02:44:11,854 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:11,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1608259711, now seen corresponding path program 1 times [2024-11-14 02:44:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968352194] [2024-11-14 02:44:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:44:11,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:11,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968352194] [2024-11-14 02:44:11,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968352194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:11,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:11,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:44:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551685157] [2024-11-14 02:44:11,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:11,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:44:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:44:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:44:11,972 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:44:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:12,095 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2024-11-14 02:44:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:44:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-14 02:44:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:12,096 INFO L225 Difference]: With dead ends: 70 [2024-11-14 02:44:12,096 INFO L226 Difference]: Without dead ends: 70 [2024-11-14 02:44:12,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:44:12,097 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:12,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 126 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:44:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-14 02:44:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-14 02:44:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.565217391304348) internal successors, (72), 64 states have internal predecessors, (72), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2024-11-14 02:44:12,101 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 17 [2024-11-14 02:44:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:12,101 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2024-11-14 02:44:12,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:44:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2024-11-14 02:44:12,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 02:44:12,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:12,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:12,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 02:44:12,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:12,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1608259712, now seen corresponding path program 1 times [2024-11-14 02:44:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:12,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893621812] [2024-11-14 02:44:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:12,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:12,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893621812] [2024-11-14 02:44:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893621812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:12,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:12,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:44:12,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606023293] [2024-11-14 02:44:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:12,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:44:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:12,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:44:12,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:44:12,327 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:44:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:12,473 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2024-11-14 02:44:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:44:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-14 02:44:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:12,474 INFO L225 Difference]: With dead ends: 69 [2024-11-14 02:44:12,474 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 02:44:12,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:44:12,475 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:12,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 165 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:44:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 02:44:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 02:44:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 63 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2024-11-14 02:44:12,479 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 17 [2024-11-14 02:44:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:12,479 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2024-11-14 02:44:12,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:44:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2024-11-14 02:44:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 02:44:12,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:12,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:12,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 02:44:12,480 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:12,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash 905153812, now seen corresponding path program 1 times [2024-11-14 02:44:12,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364694258] [2024-11-14 02:44:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:12,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:12,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364694258] [2024-11-14 02:44:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364694258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:44:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067666918] [2024-11-14 02:44:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:12,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:12,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:12,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:12,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:44:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:12,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 02:44:12,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:12,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:12,693 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 02:44:12,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-14 02:44:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067666918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1140272704] [2024-11-14 02:44:12,706 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-14 02:44:12,707 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:44:12,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:44:12,708 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:44:12,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:44:13,168 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 02:44:13,178 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:44:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1140272704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:17,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:44:17,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 4, 4] total 17 [2024-11-14 02:44:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333376483] [2024-11-14 02:44:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:17,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 02:44:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 02:44:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=261, Unknown=1, NotChecked=0, Total=306 [2024-11-14 02:44:17,599 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 02:44:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:19,820 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2024-11-14 02:44:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 02:44:19,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 17 [2024-11-14 02:44:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:19,822 INFO L225 Difference]: With dead ends: 77 [2024-11-14 02:44:19,822 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 02:44:19,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=44, Invalid=261, Unknown=1, NotChecked=0, Total=306 [2024-11-14 02:44:19,822 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:19,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 102 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 02:44:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 02:44:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2024-11-14 02:44:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.5) internal successors, (72), 65 states have internal predecessors, (72), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2024-11-14 02:44:19,827 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 17 [2024-11-14 02:44:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:19,828 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2024-11-14 02:44:19,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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 02:44:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2024-11-14 02:44:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 02:44:19,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:19,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:19,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 02:44:20,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 02:44:20,030 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:20,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2005002854, now seen corresponding path program 1 times [2024-11-14 02:44:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:20,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230660767] [2024-11-14 02:44:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:20,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230660767] [2024-11-14 02:44:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230660767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:20,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:44:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947118294] [2024-11-14 02:44:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:44:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:20,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:44:20,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:44:20,167 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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 02:44:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:20,338 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-11-14 02:44:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:44:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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 18 [2024-11-14 02:44:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:20,339 INFO L225 Difference]: With dead ends: 79 [2024-11-14 02:44:20,339 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 02:44:20,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:44:20,340 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:20,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 163 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:44:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 02:44:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2024-11-14 02:44:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.489795918367347) internal successors, (73), 66 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2024-11-14 02:44:20,347 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 18 [2024-11-14 02:44:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:20,347 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2024-11-14 02:44:20,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 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 02:44:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2024-11-14 02:44:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 02:44:20,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:20,349 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:20,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 02:44:20,349 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:20,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2025546220, now seen corresponding path program 1 times [2024-11-14 02:44:20,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:20,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377121835] [2024-11-14 02:44:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:20,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:20,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377121835] [2024-11-14 02:44:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377121835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:20,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:20,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:44:20,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082168600] [2024-11-14 02:44:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:20,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:44:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:44:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:44:20,517 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 02:44:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:20,754 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2024-11-14 02:44:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:44:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 19 [2024-11-14 02:44:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:20,755 INFO L225 Difference]: With dead ends: 78 [2024-11-14 02:44:20,755 INFO L226 Difference]: Without dead ends: 78 [2024-11-14 02:44:20,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:44:20,756 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:20,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:44:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-14 02:44:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2024-11-14 02:44:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.48) internal successors, (74), 67 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2024-11-14 02:44:20,759 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 19 [2024-11-14 02:44:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:20,760 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2024-11-14 02:44:20,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 02:44:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2024-11-14 02:44:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 02:44:20,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:20,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:20,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 02:44:20,762 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:20,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1632576732, now seen corresponding path program 1 times [2024-11-14 02:44:20,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:20,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765059730] [2024-11-14 02:44:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:20,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:20,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765059730] [2024-11-14 02:44:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765059730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:20,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:44:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534649890] [2024-11-14 02:44:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:20,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:44:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:44:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:44:20,931 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 02:44:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:21,165 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2024-11-14 02:44:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:44:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 20 [2024-11-14 02:44:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:21,167 INFO L225 Difference]: With dead ends: 74 [2024-11-14 02:44:21,168 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 02:44:21,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:44:21,168 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:21,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 165 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:44:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 02:44:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-14 02:44:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 68 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2024-11-14 02:44:21,174 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 20 [2024-11-14 02:44:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:21,175 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2024-11-14 02:44:21,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 02:44:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2024-11-14 02:44:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 02:44:21,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:21,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:21,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 02:44:21,177 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:21,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1243181542, now seen corresponding path program 1 times [2024-11-14 02:44:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568840005] [2024-11-14 02:44:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:21,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568840005] [2024-11-14 02:44:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568840005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:21,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 02:44:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882019971] [2024-11-14 02:44:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:21,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:44:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:44:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:44:21,271 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:44:21,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:21,403 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2024-11-14 02:44:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:44:21,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 22 [2024-11-14 02:44:21,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:21,405 INFO L225 Difference]: With dead ends: 80 [2024-11-14 02:44:21,405 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 02:44:21,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:44:21,405 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:21,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 167 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:44:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 02:44:21,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2024-11-14 02:44:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 69 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2024-11-14 02:44:21,410 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 22 [2024-11-14 02:44:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:21,410 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2024-11-14 02:44:21,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:44:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2024-11-14 02:44:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 02:44:21,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:21,413 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:21,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 02:44:21,413 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:21,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1243180319, now seen corresponding path program 1 times [2024-11-14 02:44:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:21,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588631517] [2024-11-14 02:44:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:21,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:21,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588631517] [2024-11-14 02:44:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588631517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:21,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 02:44:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509692532] [2024-11-14 02:44:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:21,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:44:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:44:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:44:21,686 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 02:44:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:22,001 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2024-11-14 02:44:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:44:22,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 22 [2024-11-14 02:44:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:22,002 INFO L225 Difference]: With dead ends: 77 [2024-11-14 02:44:22,002 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 02:44:22,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:44:22,003 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:22,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 124 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:44:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 02:44:22,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-11-14 02:44:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 70 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2024-11-14 02:44:22,010 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 22 [2024-11-14 02:44:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:22,011 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2024-11-14 02:44:22,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 02:44:22,011 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2024-11-14 02:44:22,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 02:44:22,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:22,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:22,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 02:44:22,012 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:22,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1243180320, now seen corresponding path program 1 times [2024-11-14 02:44:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:22,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022451953] [2024-11-14 02:44:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:22,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022451953] [2024-11-14 02:44:22,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022451953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:44:22,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118012914] [2024-11-14 02:44:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:22,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:22,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:44:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:22,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 02:44:22,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:22,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:22,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:44:22,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-14 02:44:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118012914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283247134] [2024-11-14 02:44:22,838 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 02:44:22,839 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:44:22,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:44:22,840 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:44:22,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:44:23,371 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 02:44:23,381 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:44:30,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [283247134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:30,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:44:30,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8, 10, 10] total 36 [2024-11-14 02:44:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904793155] [2024-11-14 02:44:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:30,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 02:44:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:44:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 02:44:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1192, Unknown=1, NotChecked=0, Total=1332 [2024-11-14 02:44:30,771 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 17 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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 02:44:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:32,993 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-14 02:44:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 02:44:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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 22 [2024-11-14 02:44:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:32,994 INFO L225 Difference]: With dead ends: 77 [2024-11-14 02:44:32,994 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 02:44:32,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=139, Invalid=1192, Unknown=1, NotChecked=0, Total=1332 [2024-11-14 02:44:32,996 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:32,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 02:44:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 02:44:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-14 02:44:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.4) internal successors, (77), 71 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:44:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-14 02:44:32,999 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 22 [2024-11-14 02:44:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:33,000 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-14 02:44:33,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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 02:44:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-14 02:44:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 02:44:33,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:33,001 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:33,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 02:44:33,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 02:44:33,201 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:44:33,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1765277810, now seen corresponding path program 1 times [2024-11-14 02:44:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:44:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869646081] [2024-11-14 02:44:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:44:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:44:33,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:44:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869646081] [2024-11-14 02:44:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869646081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:44:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271457580] [2024-11-14 02:44:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:33,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:33,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:33,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:33,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:44:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:33,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 02:44:33,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 02:44:33,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:33,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:44:33,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-14 02:44:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 02:44:33,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271457580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:33,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034524459] [2024-11-14 02:44:33,826 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 02:44:33,827 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:44:33,827 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:44:33,827 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:44:33,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:44:40,563 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:44:40,579 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:45:00,623 WARN L286 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:45:19,865 WARN L286 SmtUtils]: Spent 13.82s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:45:29,980 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3784#(and (= (select |#valid| |ULTIMATE.start_main_~l~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~l~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~l~0#1.base|)) (<= 0 |ULTIMATE.start_main_~l~0#1.offset|) (<= (select |#length| |ULTIMATE.start_main_~l~0#1.base|) (+ |ULTIMATE.start_main_~l~0#1.offset| 15)) (exists ((|v_ULTIMATE.start_create_#t~mem9#1.base_22| Int) (|v_#memory_$Pointer$.base_112| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_112| (Array Int (Array Int Int))) (|v_#memory_int_93| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_#t~mem9#1.offset_21| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) 1) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_112| |v_ULTIMATE.start_create_#t~mem9#1.base_22| (store (select |v_#memory_$Pointer$.offset_112| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) |v_ULTIMATE.start_create_#t~mem9#1.offset_21| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) |v_ULTIMATE.start_create_#t~mem9#1.offset_21|)))) (<= (+ 8 |v_ULTIMATE.start_create_#t~mem9#1.offset_21|) (select |#length| |v_ULTIMATE.start_create_#t~mem9#1.base_22|)) (<= 0 |v_ULTIMATE.start_create_#t~mem9#1.offset_21|) (= |#memory_int| (store |v_#memory_int_93| |v_ULTIMATE.start_create_#t~mem9#1.base_22| (store (select |v_#memory_int_93| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) |v_ULTIMATE.start_create_#t~mem9#1.offset_21| (select (select |#memory_int| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) |v_ULTIMATE.start_create_#t~mem9#1.offset_21|)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_112| |v_ULTIMATE.start_create_#t~mem9#1.base_22| (store (select |v_#memory_$Pointer$.base_112| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) |v_ULTIMATE.start_create_#t~mem9#1.offset_21| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_#t~mem9#1.base_22|) |v_ULTIMATE.start_create_#t~mem9#1.offset_21|)))))) (or (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_main_~l~0#1.offset| 0))) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_40| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_40|) 1) (<= 8 (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_40|)))))' at error location [2024-11-14 02:45:29,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:45:29,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:45:29,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 16 [2024-11-14 02:45:29,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038471834] [2024-11-14 02:45:29,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:45:29,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 02:45:29,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:45:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 02:45:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=942, Unknown=4, NotChecked=0, Total=1056 [2024-11-14 02:45:29,982 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 16 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 02:45:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:45:30,656 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2024-11-14 02:45:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:45:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 16 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 24 [2024-11-14 02:45:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:45:30,658 INFO L225 Difference]: With dead ends: 79 [2024-11-14 02:45:30,658 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 02:45:30,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=110, Invalid=942, Unknown=4, NotChecked=0, Total=1056 [2024-11-14 02:45:30,659 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:45:30,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 356 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:45:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 02:45:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-14 02:45:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 72 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:45:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2024-11-14 02:45:30,662 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 24 [2024-11-14 02:45:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:45:30,663 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2024-11-14 02:45:30,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 16 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 02:45:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2024-11-14 02:45:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 02:45:30,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:45:30,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:45:30,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 02:45:30,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:45:30,868 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:45:30,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:45:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1156388834, now seen corresponding path program 1 times [2024-11-14 02:45:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:45:30,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695435255] [2024-11-14 02:45:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:30,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:45:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 02:45:31,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:45:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695435255] [2024-11-14 02:45:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695435255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:45:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621298973] [2024-11-14 02:45:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:45:31,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:45:31,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:45:31,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:45:31,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 02:45:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:45:31,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 02:45:31,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:45:31,888 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:45:31,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:45:31,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:45:32,124 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 02:45:32,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-14 02:45:32,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 02:45:32,187 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-14 02:45:32,249 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 02:45:32,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-14 02:45:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2024-11-14 02:45:32,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:45:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621298973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:45:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [991385087] [2024-11-14 02:45:32,454 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 02:45:32,454 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:45:32,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:45:32,454 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:45:32,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:45:38,400 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:45:38,409 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:46:00,325 WARN L286 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:46:22,481 WARN L286 SmtUtils]: Spent 13.14s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:46:24,142 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4054#(and (exists ((|v_ULTIMATE.start_create_~now~0#1.base_45| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_45|) 1))) (= |ULTIMATE.start_create_#t~ret8#1.offset| 0))' at error location [2024-11-14 02:46:24,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:46:24,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:46:24,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2024-11-14 02:46:24,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57908743] [2024-11-14 02:46:24,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:46:24,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 02:46:24,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:46:24,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 02:46:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=843, Unknown=6, NotChecked=58, Total=992 [2024-11-14 02:46:24,144 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 18 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 02:46:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:25,665 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-14 02:46:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:46:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2024-11-14 02:46:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:25,666 INFO L225 Difference]: With dead ends: 77 [2024-11-14 02:46:25,666 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 02:46:25,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=119, Invalid=1137, Unknown=8, NotChecked=68, Total=1332 [2024-11-14 02:46:25,667 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:25,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 300 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 0 Unknown, 47 Unchecked, 0.8s Time] [2024-11-14 02:46:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 02:46:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-14 02:46:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 56 states have (on average 1.375) internal successors, (77), 71 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:46:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-14 02:46:25,671 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 25 [2024-11-14 02:46:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:25,671 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-14 02:46:25,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 02:46:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-14 02:46:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 02:46:25,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:25,672 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:46:25,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 02:46:25,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:46:25,873 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:46:25,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1156388835, now seen corresponding path program 1 times [2024-11-14 02:46:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:46:25,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360849559] [2024-11-14 02:46:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:25,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:46:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:27,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:46:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360849559] [2024-11-14 02:46:27,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360849559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:46:27,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559498793] [2024-11-14 02:46:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:46:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:46:27,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:46:27,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 02:46:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:27,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-14 02:46:27,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:27,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 02:46:27,661 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:46:27,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:46:27,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:46:27,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 02:46:28,064 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 02:46:28,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-14 02:46:28,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 02:46:28,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2024-11-14 02:46:28,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-14 02:46:28,199 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-14 02:46:28,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:46:28,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:46:28,253 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:46:28,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:46:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-14 02:46:28,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559498793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:46:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [199645882] [2024-11-14 02:46:28,628 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-14 02:46:28,629 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:46:28,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:46:28,629 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:46:28,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:46:34,653 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:46:34,662 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:46:43,274 WARN L286 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 291 DAG size of output: 272 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:47:12,753 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:47:37,405 WARN L286 SmtUtils]: Spent 13.51s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:47:39,419 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4332#(and (exists ((|v_ULTIMATE.start_create_~now~0#1.offset_44| Int) (|v_ULTIMATE.start_create_~now~0#1.base_49| Int)) (and (or (< (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_44|) 0) (< (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_49|) (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_44|))) (or (and (<= (+ |ULTIMATE.start_create_#t~ret8#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#length_119| (Array Int Int))) (= |#length| (store |v_#length_119| |ULTIMATE.start_create_#t~ret8#1.base| 16))) (exists ((|v_ULTIMATE.start_create_#t~nondet7#1_33| Int) (|v_old(#memory_int)_AFTER_CALL_46| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_46| (Array Int (Array Int Int))) (|v_old(#length)_AFTER_CALL_46| (Array Int Int)) (|v_old(#valid)_AFTER_CALL_46| (Array Int Int)) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_46| (Array Int (Array Int Int)))) (and (or (and (exists ((|v_ULTIMATE.start_create_~now~0#1.base_48| Int) (|v_ULTIMATE.start_create_~now~0#1.offset_43| Int)) (and (<= (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_43|) (select |v_old(#length)_AFTER_CALL_46| |v_ULTIMATE.start_create_~now~0#1.base_48|)) (= (select |v_old(#valid)_AFTER_CALL_46| |v_ULTIMATE.start_create_~now~0#1.base_48|) 1) (<= 0 (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (= |v_ULTIMATE.start_create_~now~0#1.offset_44| (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_46| |v_ULTIMATE.start_create_~now~0#1.base_48|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|))) (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_46| |v_ULTIMATE.start_create_~now~0#1.base_48|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~now~0#1.base_49|))) (exists ((|v_ULTIMATE.start_create_#t~mem9#1.base_28| Int) (|v_#memory_int_123| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_#t~mem9#1.offset_25| Int) (|v_#memory_$Pointer$.base_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_144| (Array Int (Array Int Int)))) (and (<= (+ 8 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|) (select |v_old(#length)_AFTER_CALL_46| |v_ULTIMATE.start_create_#t~mem9#1.base_28|)) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_46| (store |v_#memory_$Pointer$.offset_144| |v_ULTIMATE.start_create_#t~mem9#1.base_28| (store (select |v_#memory_$Pointer$.offset_144| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25| |ULTIMATE.start_create_~data~0#1.offset|))) (= |v_old(#memory_int)_AFTER_CALL_46| (store |v_#memory_int_123| |v_ULTIMATE.start_create_#t~mem9#1.base_28| (store (select |v_#memory_int_123| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25| (select (select |v_old(#memory_int)_AFTER_CALL_46| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25|)))) (= (select |v_old(#valid)_AFTER_CALL_46| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) 1) (= (store |v_#memory_$Pointer$.base_146| |v_ULTIMATE.start_create_#t~mem9#1.base_28| (store (select |v_#memory_$Pointer$.base_146| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25| |ULTIMATE.start_create_~data~0#1.base|)) |v_old(#memory_$Pointer$.base)_AFTER_CALL_46|) (<= 0 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|)))) (and (not (= |ULTIMATE.start_create_~data~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_~data~0#1.base| 1) |#StackHeapBarrier|) (<= 1 |#StackHeapBarrier|) (not (= |ULTIMATE.start_create_~sll~0#1.base| 0)) (exists ((|v_#memory_$Pointer$.base_140| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_138| (Array Int (Array Int Int)))) (and (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_46| (store |v_#memory_$Pointer$.base_140| |v_ULTIMATE.start_create_~now~0#1.base_49| (store (select |v_#memory_$Pointer$.base_140| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0 |ULTIMATE.start_create_~data~0#1.base|))) (= (store (store |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.base_140| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_$Pointer$.base_140|))) (<= (+ |ULTIMATE.start_create_~sll~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#length_119| (Array Int Int))) (= |v_old(#length)_AFTER_CALL_46| (store (store |v_#length_119| |ULTIMATE.start_create_~sll~0#1.base| 16) |ULTIMATE.start_create_~data~0#1.base| 4))) (exists ((|v_#memory_$Pointer$.offset_138| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_136| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_138| |v_ULTIMATE.start_create_~now~0#1.base_49| (store (select |v_#memory_$Pointer$.offset_138| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0 0)) |v_old(#memory_$Pointer$.offset)_AFTER_CALL_46|) (= |v_#memory_$Pointer$.offset_138| (store (store |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.offset_138| |ULTIMATE.start_create_~data~0#1.base|) 0)))))) (= |ULTIMATE.start_create_~sll~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (<= 8 (select |v_old(#length)_AFTER_CALL_46| |v_ULTIMATE.start_create_~now~0#1.base_49|)) (exists ((|v_#memory_int_115| (Array Int (Array Int Int))) (|v_#memory_int_116| (Array Int (Array Int Int))) (|v_#memory_int_117| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_116| |ULTIMATE.start_create_~data~0#1.base| (store (select |v_#memory_int_116| |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_int_117| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_int_117|) (= |v_old(#memory_int)_AFTER_CALL_46| (store |v_#memory_int_117| |v_ULTIMATE.start_create_~now~0#1.base_49| (store (select |v_#memory_int_117| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0 (select (select |v_old(#memory_int)_AFTER_CALL_46| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0)))) (<= (select (select |v_#memory_int_117| |ULTIMATE.start_create_~data~0#1.base|) 0) 2147483647) (<= 0 (+ 2147483648 (select (select |v_#memory_int_117| |ULTIMATE.start_create_~data~0#1.base|) 0))) (= (store |v_#memory_int_115| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_int_115| |ULTIMATE.start_create_~sll~0#1.base|) 8 (select (select |v_#memory_int_116| |ULTIMATE.start_create_~sll~0#1.base|) 8))) |v_#memory_int_116|))) (exists ((|v_#valid_140| (Array Int Int))) (and (= (select |v_#valid_140| |ULTIMATE.start_create_~sll~0#1.base|) 0) (= (select |v_#valid_140| |ULTIMATE.start_create_~data~0#1.base|) 0) (= (store (store |v_#valid_140| |ULTIMATE.start_create_~sll~0#1.base| 1) |ULTIMATE.start_create_~data~0#1.base| 1) |v_old(#valid)_AFTER_CALL_46|))) (= |v_ULTIMATE.start_create_~now~0#1.offset_44| 0) (= |ULTIMATE.start_create_~data~0#1.offset| 0) (= |ULTIMATE.start_create_~sll~0#1.base| |v_ULTIMATE.start_create_~now~0#1.base_49|))) (<= |v_ULTIMATE.start_create_#t~nondet7#1_33| 2147483647) (not (= |v_ULTIMATE.start_create_#t~nondet7#1_33| 0)) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet7#1_33| 2147483648)))) (not (= |ULTIMATE.start_create_#t~ret8#1.base| 0)) (exists ((|v_#memory_$Pointer$.offset_136| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)))) (exists ((|v_#valid_140| (Array Int Int))) (and (= (select |v_#valid_140| |ULTIMATE.start_create_#t~ret8#1.base|) 0) (= |#valid| (store |v_#valid_140| |ULTIMATE.start_create_#t~ret8#1.base| 1)))) (exists ((|v_#memory_int_115| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_115| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_int_115| |ULTIMATE.start_create_#t~ret8#1.base|) 8 (select (select |#memory_int| |ULTIMATE.start_create_#t~ret8#1.base|) 8))))) (exists ((|v_#memory_$Pointer$.base_138| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)) |#memory_$Pointer$.base|))) (and (<= (+ |ULTIMATE.start_create_#t~ret8#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#length_119| (Array Int Int))) (= |#length| (store |v_#length_119| |ULTIMATE.start_create_#t~ret8#1.base| 16))) (exists ((|v_ULTIMATE.start_create_#t~nondet7#1_33| Int) (|v_old(#length)_AFTER_CALL_47| (Array Int Int)) (|v_old(#memory_int)_AFTER_CALL_47| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_47| (Array Int (Array Int Int))) (|v_old(#valid)_AFTER_CALL_47| (Array Int Int)) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_47| (Array Int (Array Int Int)))) (and (<= |v_ULTIMATE.start_create_#t~nondet7#1_33| 2147483647) (or (and (exists ((|v_ULTIMATE.start_create_#t~mem9#1.base_28| Int) (|v_#memory_int_123| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_#t~mem9#1.offset_25| Int) (|v_#memory_$Pointer$.base_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_144| (Array Int (Array Int Int)))) (and (= |v_old(#memory_int)_AFTER_CALL_47| (store |v_#memory_int_123| |v_ULTIMATE.start_create_#t~mem9#1.base_28| (store (select |v_#memory_int_123| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25| (select (select |v_old(#memory_int)_AFTER_CALL_47| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25|)))) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_47| (store |v_#memory_$Pointer$.offset_144| |v_ULTIMATE.start_create_#t~mem9#1.base_28| (store (select |v_#memory_$Pointer$.offset_144| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25| |ULTIMATE.start_create_~data~0#1.offset|))) (= (select |v_old(#valid)_AFTER_CALL_47| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) 1) (<= (+ 8 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|) (select |v_old(#length)_AFTER_CALL_47| |v_ULTIMATE.start_create_#t~mem9#1.base_28|)) (= (store |v_#memory_$Pointer$.base_146| |v_ULTIMATE.start_create_#t~mem9#1.base_28| (store (select |v_#memory_$Pointer$.base_146| |v_ULTIMATE.start_create_#t~mem9#1.base_28|) |v_ULTIMATE.start_create_#t~mem9#1.offset_25| |ULTIMATE.start_create_~data~0#1.base|)) |v_old(#memory_$Pointer$.base)_AFTER_CALL_47|) (<= 0 |v_ULTIMATE.start_create_#t~mem9#1.offset_25|))) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_48| Int) (|v_ULTIMATE.start_create_~now~0#1.offset_43| Int)) (and (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_47| |v_ULTIMATE.start_create_~now~0#1.base_48|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~now~0#1.base_49|) (<= 0 (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) (= (select |v_old(#valid)_AFTER_CALL_47| |v_ULTIMATE.start_create_~now~0#1.base_48|) 1) (= (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_47| |v_ULTIMATE.start_create_~now~0#1.base_48|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_43|)) |v_ULTIMATE.start_create_~now~0#1.offset_44|) (<= (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_43|) (select |v_old(#length)_AFTER_CALL_47| |v_ULTIMATE.start_create_~now~0#1.base_48|))))) (and (not (= |ULTIMATE.start_create_~data~0#1.base| 0)) (exists ((|v_#memory_int_115| (Array Int (Array Int Int))) (|v_#memory_int_116| (Array Int (Array Int Int))) (|v_#memory_int_117| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_116| |ULTIMATE.start_create_~data~0#1.base| (store (select |v_#memory_int_116| |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_int_117| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_int_117|) (<= (select (select |v_#memory_int_117| |ULTIMATE.start_create_~data~0#1.base|) 0) 2147483647) (<= 0 (+ 2147483648 (select (select |v_#memory_int_117| |ULTIMATE.start_create_~data~0#1.base|) 0))) (= |v_old(#memory_int)_AFTER_CALL_47| (store |v_#memory_int_117| |v_ULTIMATE.start_create_~now~0#1.base_49| (store (select |v_#memory_int_117| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0 (select (select |v_old(#memory_int)_AFTER_CALL_47| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0)))) (= (store |v_#memory_int_115| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_int_115| |ULTIMATE.start_create_~sll~0#1.base|) 8 (select (select |v_#memory_int_116| |ULTIMATE.start_create_~sll~0#1.base|) 8))) |v_#memory_int_116|))) (<= (+ |ULTIMATE.start_create_~data~0#1.base| 1) |#StackHeapBarrier|) (<= 1 |#StackHeapBarrier|) (not (= |ULTIMATE.start_create_~sll~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_~sll~0#1.base| 1) |#StackHeapBarrier|) (= |ULTIMATE.start_create_~sll~0#1.offset| 0) (exists ((|v_#memory_$Pointer$.base_140| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_138| (Array Int (Array Int Int)))) (and (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_47| (store |v_#memory_$Pointer$.base_140| |v_ULTIMATE.start_create_~now~0#1.base_49| (store (select |v_#memory_$Pointer$.base_140| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0 |ULTIMATE.start_create_~data~0#1.base|))) (= (store (store |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.base_140| |ULTIMATE.start_create_~data~0#1.base|) 0))) |v_#memory_$Pointer$.base_140|))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_119| (Array Int Int))) (= |v_old(#length)_AFTER_CALL_47| (store (store |v_#length_119| |ULTIMATE.start_create_~sll~0#1.base| 16) |ULTIMATE.start_create_~data~0#1.base| 4))) (exists ((|v_#memory_$Pointer$.offset_138| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_136| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_138| |v_ULTIMATE.start_create_~now~0#1.base_49| (store (select |v_#memory_$Pointer$.offset_138| |v_ULTIMATE.start_create_~now~0#1.base_49|) 0 0)) |v_old(#memory_$Pointer$.offset)_AFTER_CALL_47|) (= |v_#memory_$Pointer$.offset_138| (store (store |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base| (store (select (store |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base| (store (select |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_~sll~0#1.base|) 8 0)) |ULTIMATE.start_create_~data~0#1.base|) 0 (select (select |v_#memory_$Pointer$.offset_138| |ULTIMATE.start_create_~data~0#1.base|) 0)))))) (= |v_ULTIMATE.start_create_~now~0#1.offset_44| 0) (= |ULTIMATE.start_create_~data~0#1.offset| 0) (= |ULTIMATE.start_create_~sll~0#1.base| |v_ULTIMATE.start_create_~now~0#1.base_49|) (<= 8 (select |v_old(#length)_AFTER_CALL_47| |v_ULTIMATE.start_create_~now~0#1.base_49|)) (exists ((|v_#valid_140| (Array Int Int))) (and (= (store (store |v_#valid_140| |ULTIMATE.start_create_~sll~0#1.base| 1) |ULTIMATE.start_create_~data~0#1.base| 1) |v_old(#valid)_AFTER_CALL_47|) (= (select |v_#valid_140| |ULTIMATE.start_create_~sll~0#1.base|) 0) (= (select |v_#valid_140| |ULTIMATE.start_create_~data~0#1.base|) 0))))) (not (= |v_ULTIMATE.start_create_#t~nondet7#1_33| 0)) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet7#1_33| 2147483648)))) (not (= |ULTIMATE.start_create_#t~ret8#1.base| 0)) (exists ((|v_#memory_$Pointer$.offset_136| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.offset_136| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)))) (exists ((|v_#valid_140| (Array Int Int))) (and (= (select |v_#valid_140| |ULTIMATE.start_create_#t~ret8#1.base|) 0) (= |#valid| (store |v_#valid_140| |ULTIMATE.start_create_#t~ret8#1.base| 1)))) (exists ((|v_#memory_int_115| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_115| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_int_115| |ULTIMATE.start_create_#t~ret8#1.base|) 8 (select (select |#memory_int| |ULTIMATE.start_create_#t~ret8#1.base|) 8))))) (exists ((|v_#memory_$Pointer$.base_138| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_#t~ret8#1.base| (store (select |v_#memory_$Pointer$.base_138| |ULTIMATE.start_create_#t~ret8#1.base|) 8 0)) |#memory_$Pointer$.base|)))))) (= |ULTIMATE.start_create_#t~ret8#1.offset| 0))' at error location [2024-11-14 02:47:39,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:47:39,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:47:39,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 20 [2024-11-14 02:47:39,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061047989] [2024-11-14 02:47:39,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:47:39,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 02:47:39,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:39,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 02:47:39,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1084, Unknown=6, NotChecked=66, Total=1260 [2024-11-14 02:47:39,421 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 02:47:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:47:43,917 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-14 02:47:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 02:47:43,917 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2024-11-14 02:47:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:47:43,918 INFO L225 Difference]: With dead ends: 74 [2024-11-14 02:47:43,918 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 02:47:43,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 69.4s TimeCoverageRelationStatistics Valid=162, Invalid=1555, Unknown=9, NotChecked=80, Total=1806 [2024-11-14 02:47:43,919 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:47:43,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 354 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 429 Invalid, 0 Unknown, 54 Unchecked, 1.3s Time] [2024-11-14 02:47:43,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 02:47:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-14 02:47:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 68 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:47:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-14 02:47:43,922 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 25 [2024-11-14 02:47:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:47:43,922 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-14 02:47:43,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 02:47:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-14 02:47:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 02:47:43,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:43,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:43,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 02:47:44,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:47:44,124 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:47:44,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:44,124 INFO L85 PathProgramCache]: Analyzing trace with hash 695405433, now seen corresponding path program 1 times [2024-11-14 02:47:44,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:44,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890835776] [2024-11-14 02:47:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:44,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:47:44,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:44,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890835776] [2024-11-14 02:47:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890835776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:44,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:47:44,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:47:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057203485] [2024-11-14 02:47:44,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:44,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:47:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:47:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:47:44,439 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 02:47:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:47:45,182 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2024-11-14 02:47:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:47:45,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 24 [2024-11-14 02:47:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:47:45,183 INFO L225 Difference]: With dead ends: 78 [2024-11-14 02:47:45,184 INFO L226 Difference]: Without dead ends: 78 [2024-11-14 02:47:45,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:47:45,184 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:47:45,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:47:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-14 02:47:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-14 02:47:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 71 states have internal predecessors, (80), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:47:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2024-11-14 02:47:45,187 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 24 [2024-11-14 02:47:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:47:45,188 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2024-11-14 02:47:45,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 02:47:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2024-11-14 02:47:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 02:47:45,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:45,189 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:45,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-14 02:47:45,190 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:47:45,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash 80162120, now seen corresponding path program 1 times [2024-11-14 02:47:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68086287] [2024-11-14 02:47:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:47:46,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:46,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68086287] [2024-11-14 02:47:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68086287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:47:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571866643] [2024-11-14 02:47:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:46,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:47:46,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:47:46,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:47:46,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 02:47:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:47,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 02:47:47,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:47:47,496 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:47:47,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:47:47,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:47:47,838 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 02:47:47,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-14 02:47:48,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 02:47:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:47:48,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:47:48,382 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-14 02:47:48,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 02:47:48,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:47:48,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-14 02:47:48,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:47:48,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-14 02:47:48,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 02:47:49,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571866643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:47:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714733392] [2024-11-14 02:47:49,107 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 02:47:49,107 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:47:49,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:47:49,107 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:47:49,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:47:54,828 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:47:54,837 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:48:29,411 WARN L286 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:48:52,251 WARN L286 SmtUtils]: Spent 13.45s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:48:56,888 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4814#(exists ((|v_ULTIMATE.start_loop_~x#1.base_50| Int)) (and (or (not (= |v_ULTIMATE.start_loop_~x#1.base_50| 0)) (not (= |ULTIMATE.start_loop_~x#1.offset| 0))) (not (= (select |#valid| |v_ULTIMATE.start_loop_~x#1.base_50|) 1))))' at error location [2024-11-14 02:48:56,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:48:56,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:48:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 24 [2024-11-14 02:48:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000327860] [2024-11-14 02:48:56,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:48:56,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 02:48:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:48:56,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 02:48:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1718, Unknown=31, NotChecked=0, Total=1892 [2024-11-14 02:48:56,890 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 02:48:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:59,173 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2024-11-14 02:48:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 02:48:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2024-11-14 02:48:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:59,174 INFO L225 Difference]: With dead ends: 81 [2024-11-14 02:48:59,174 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 02:48:59,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=204, Invalid=2312, Unknown=34, NotChecked=0, Total=2550 [2024-11-14 02:48:59,175 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:59,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 402 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 02:48:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 02:48:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-11-14 02:48:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 73 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:48:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2024-11-14 02:48:59,179 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 26 [2024-11-14 02:48:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:59,179 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2024-11-14 02:48:59,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 02:48:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2024-11-14 02:48:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 02:48:59,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:59,180 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:59,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 02:48:59,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 02:48:59,386 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:48:59,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash 80162121, now seen corresponding path program 1 times [2024-11-14 02:48:59,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:48:59,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014040715] [2024-11-14 02:48:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:59,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:48:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:49:01,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:49:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014040715] [2024-11-14 02:49:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014040715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:49:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944754480] [2024-11-14 02:49:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:01,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:49:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:49:01,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:49:01,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 02:49:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:01,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 02:49:01,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:49:01,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 02:49:01,945 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:49:01,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:49:02,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 02:49:02,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:49:02,417 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 02:49:02,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-14 02:49:02,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 02:49:02,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 02:49:02,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-14 02:49:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:49:02,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:49:03,542 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_1074 (Array Int Int)) (v_ArrVal_1073 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1073) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1074) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (forall ((v_ArrVal_1073 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1073) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))))) is different from false [2024-11-14 02:49:03,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:49:03,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-14 02:49:03,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:49:03,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-14 02:49:03,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:49:03,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2024-11-14 02:49:03,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:49:03,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 89 [2024-11-14 02:49:03,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-14 02:49:03,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 02:49:03,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:49:03,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-14 02:49:03,752 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 02:49:03,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:49:03,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-14 02:49:04,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944754480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:49:04,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1996942148] [2024-11-14 02:49:04,193 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 02:49:04,193 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:49:04,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:49:04,193 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:49:04,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:49:09,956 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:49:09,968 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:49:23,386 WARN L286 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:42,587 WARN L286 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:45,168 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5002#true' at error location [2024-11-14 02:49:45,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:49:45,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:49:45,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2024-11-14 02:49:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535679141] [2024-11-14 02:49:45,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:49:45,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 02:49:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:49:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 02:49:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1899, Unknown=16, NotChecked=88, Total=2162 [2024-11-14 02:49:45,170 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 02:49:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:49:47,367 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2024-11-14 02:49:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 02:49:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2024-11-14 02:49:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:49:47,368 INFO L225 Difference]: With dead ends: 81 [2024-11-14 02:49:47,368 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 02:49:47,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=202, Invalid=2236, Unknown=16, NotChecked=96, Total=2550 [2024-11-14 02:49:47,371 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:49:47,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 483 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 02:49:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 02:49:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-14 02:49:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 74 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:49:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2024-11-14 02:49:47,374 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 26 [2024-11-14 02:49:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:49:47,374 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2024-11-14 02:49:47,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 02:49:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2024-11-14 02:49:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 02:49:47,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:49:47,375 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:49:47,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 02:49:47,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:49:47,579 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:49:47,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:49:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1809870883, now seen corresponding path program 1 times [2024-11-14 02:49:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:49:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972634654] [2024-11-14 02:49:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:49:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 02:49:47,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:49:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972634654] [2024-11-14 02:49:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972634654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:49:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302901406] [2024-11-14 02:49:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:47,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:49:47,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:49:47,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:49:47,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 02:49:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:47,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 02:49:47,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:49:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 02:49:48,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:49:48,168 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 02:49:48,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-14 02:49:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 02:49:48,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302901406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:49:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671353242] [2024-11-14 02:49:48,226 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 02:49:48,226 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:49:48,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:49:48,226 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:49:48,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:49:54,036 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:49:54,045 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:50:27,997 WARN L286 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:52,648 WARN L286 SmtUtils]: Spent 14.78s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:57,731 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5495#(exists ((|v_ULTIMATE.start_destroy_~l#1.base_32| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_destroy_~l#1.base_32|) 1)) (or (not (= |ULTIMATE.start_destroy_~l#1.offset| 0)) (not (= |v_ULTIMATE.start_destroy_~l#1.base_32| 0)))))' at error location [2024-11-14 02:50:57,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:50:57,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:50:57,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-14 02:50:57,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752698941] [2024-11-14 02:50:57,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:50:57,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:50:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:50:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:50:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=395, Unknown=14, NotChecked=0, Total=462 [2024-11-14 02:50:57,732 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:50:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:50:58,144 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2024-11-14 02:50:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:50:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-14 02:50:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:50:58,145 INFO L225 Difference]: With dead ends: 89 [2024-11-14 02:50:58,145 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 02:50:58,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 63.8s TimeCoverageRelationStatistics Valid=53, Invalid=395, Unknown=14, NotChecked=0, Total=462 [2024-11-14 02:50:58,146 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:50:58,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 86 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:50:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 02:50:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2024-11-14 02:50:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 79 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:50:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2024-11-14 02:50:58,150 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 27 [2024-11-14 02:50:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:50:58,150 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2024-11-14 02:50:58,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:50:58,150 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2024-11-14 02:50:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 02:50:58,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:50:58,151 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:50:58,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 02:50:58,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 02:50:58,352 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:50:58,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:50:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1809870882, now seen corresponding path program 1 times [2024-11-14 02:50:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:50:58,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185304203] [2024-11-14 02:50:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:50:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:50:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:50:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:50:59,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:50:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185304203] [2024-11-14 02:50:59,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185304203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:50:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446703052] [2024-11-14 02:50:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:50:59,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:50:59,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:50:59,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:50:59,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 02:50:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:50:59,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 02:50:59,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:51:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:51:00,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:51:00,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:51:00,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2024-11-14 02:51:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:51:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446703052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:51:00,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [227125869] [2024-11-14 02:51:00,982 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 02:51:00,982 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:51:00,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:51:00,983 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:51:00,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:51:06,821 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:51:06,831 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:51:20,708 WARN L286 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:45,457 WARN L286 SmtUtils]: Spent 13.57s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:48,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5684#true' at error location [2024-11-14 02:51:48,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:51:48,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:51:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-14 02:51:48,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977453414] [2024-11-14 02:51:48,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:51:48,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 02:51:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:51:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 02:51:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1139, Unknown=4, NotChecked=0, Total=1260 [2024-11-14 02:51:48,154 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 02:51:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:51:49,576 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2024-11-14 02:51:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 02:51:49,576 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2024-11-14 02:51:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:51:49,577 INFO L225 Difference]: With dead ends: 98 [2024-11-14 02:51:49,577 INFO L226 Difference]: Without dead ends: 98 [2024-11-14 02:51:49,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=126, Invalid=1202, Unknown=4, NotChecked=0, Total=1332 [2024-11-14 02:51:49,578 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:51:49,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 371 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 02:51:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-14 02:51:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2024-11-14 02:51:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 84 states have internal predecessors, (102), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:51:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-11-14 02:51:49,583 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 27 [2024-11-14 02:51:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:51:49,583 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-11-14 02:51:49,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 02:51:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-11-14 02:51:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 02:51:49,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:51:49,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:51:49,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 02:51:49,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:51:49,785 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:51:49,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:51:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2098849419, now seen corresponding path program 1 times [2024-11-14 02:51:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:51:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598818035] [2024-11-14 02:51:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:51:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:51:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:51:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:51:50,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:51:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598818035] [2024-11-14 02:51:50,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598818035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:51:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227588430] [2024-11-14 02:51:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:51:50,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:51:50,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:51:50,711 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:51:50,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 02:51:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:51:50,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-14 02:51:50,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:51:51,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 02:51:52,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:51:52,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 30 [2024-11-14 02:51:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:51:54,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:51:55,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 80 [2024-11-14 02:51:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227588430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:51:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1605402473] [2024-11-14 02:51:57,190 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-14 02:51:57,190 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:51:57,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:51:57,191 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:51:57,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:51:57,693 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 02:51:57,704 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:52:21,298 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6248#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_37| Int) (|v_#memory_$Pointer$.base_240| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_237| (Array Int (Array Int Int))) (|v_#memory_int_213| (Array Int (Array Int Int))) (|v_#memory_int_214| (Array Int (Array Int Int))) (|v_#memory_int_212| (Array Int (Array Int Int))) (|v_#valid_208| (Array Int Int)) (|v_#memory_$Pointer$.base_242| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_235| (Array Int (Array Int Int))) (|v_#length_178| (Array Int Int))) (and (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) 0)) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_242| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_$Pointer$.base_242| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_237| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_$Pointer$.offset_237| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0 0))) (<= (+ (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) 1) |#StackHeapBarrier|) (= |v_#memory_$Pointer$.offset_237| (store (store |v_#memory_$Pointer$.offset_235| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_$Pointer$.offset_235| |v_ULTIMATE.start_destroy_~l#1.base_37|) 8 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) (store (select (store |v_#memory_$Pointer$.offset_235| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_$Pointer$.offset_235| |v_ULTIMATE.start_destroy_~l#1.base_37|) 8 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0 (select (select |v_#memory_$Pointer$.offset_237| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0)))) (= (select |v_#valid_208| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0) (= (store |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_int_212| |v_ULTIMATE.start_destroy_~l#1.base_37|) 8 (select (select |v_#memory_int_213| |v_ULTIMATE.start_destroy_~l#1.base_37|) 8))) |v_#memory_int_213|) (= |v_#memory_$Pointer$.base_242| (store (store |v_#memory_$Pointer$.base_240| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_$Pointer$.base_240| |v_ULTIMATE.start_destroy_~l#1.base_37|) 8 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) (store (select (store |v_#memory_$Pointer$.base_240| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_$Pointer$.base_240| |v_ULTIMATE.start_destroy_~l#1.base_37|) 8 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0 (select (select |v_#memory_$Pointer$.base_242| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0)))) (= |v_#memory_int_214| (store |v_#memory_int_213| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) (store (select |v_#memory_int_213| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0 (select (select |v_#memory_int_214| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0)))) (= |#memory_int| (store |v_#memory_int_214| |v_ULTIMATE.start_destroy_~l#1.base_37| (store (select |v_#memory_int_214| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0 (select (select |#memory_int| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)))) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_37| 1) |#StackHeapBarrier|) (<= (select (select |v_#memory_int_214| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0) 2147483647) (= (select |v_#valid_208| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) (= (store (store |v_#valid_208| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) 0) |v_ULTIMATE.start_destroy_~l#1.base_37| 0) |#valid|) (<= 16 (select |#length| |v_ULTIMATE.start_destroy_~l#1.base_37|)) (= |#length| (store (store |v_#length_178| |v_ULTIMATE.start_destroy_~l#1.base_37| 16) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0) 4)) (<= 0 (+ (select (select |v_#memory_int_214| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_37|) 0)) 0) 2147483648)) (not (= |v_ULTIMATE.start_destroy_~l#1.base_37| 0)))) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (and (= (select |v_ULTIMATE.start_main_old_#valid#1_10| 0) 0) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|)))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 02:52:21,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:52:21,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:52:21,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2024-11-14 02:52:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895311777] [2024-11-14 02:52:21,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:52:21,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 02:52:21,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:52:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 02:52:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2817, Unknown=2, NotChecked=0, Total=2970 [2024-11-14 02:52:21,300 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:52:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:26,455 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2024-11-14 02:52:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 02:52:26,456 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-14 02:52:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:26,457 INFO L225 Difference]: With dead ends: 103 [2024-11-14 02:52:26,457 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 02:52:26,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=228, Invalid=3930, Unknown=2, NotChecked=0, Total=4160 [2024-11-14 02:52:26,458 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:26,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 337 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 843 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 02:52:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 02:52:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2024-11-14 02:52:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.394736842105263) internal successors, (106), 88 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:52:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2024-11-14 02:52:26,462 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 27 [2024-11-14 02:52:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:26,462 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2024-11-14 02:52:26,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:52:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2024-11-14 02:52:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 02:52:26,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:26,463 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:26,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 02:52:26,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:26,664 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:52:26,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:26,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2098850642, now seen corresponding path program 1 times [2024-11-14 02:52:26,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:26,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971874890] [2024-11-14 02:52:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:26,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:52:27,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971874890] [2024-11-14 02:52:27,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971874890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:52:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940574158] [2024-11-14 02:52:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:27,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:27,591 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:52:27,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 02:52:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:27,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-14 02:52:27,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:27,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 02:52:27,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 02:52:28,138 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 02:52:28,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 02:52:28,224 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 02:52:28,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 02:52:28,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-14 02:52:28,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-14 02:52:29,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-14 02:52:29,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:52:29,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:52:29,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 51 [2024-11-14 02:52:29,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:52:29,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2024-11-14 02:52:29,654 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:52:29,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:52:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:52:30,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:30,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-14 02:52:31,352 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1356 Int) (v_ArrVal_1353 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1353))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_1356))) |c_ULTIMATE.start_create_~sll~0#1.base|) 8) 0)) (forall ((v_ArrVal_1354 (Array Int Int))) (= |c_ULTIMATE.start_create_~sll~0#1.base| (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1354))) (store .cse1 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|) 0))))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1354 (Array Int Int))) (let ((.cse2 (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1354))) (store .cse3 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|))) (or (= (select .cse2 8) 0) (= |c_ULTIMATE.start_create_~sll~0#1.base| (select .cse2 0)))))) is different from false [2024-11-14 02:52:31,417 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1354 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1354) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) (or (= (select .cse0 8) 0) (= |c_ULTIMATE.start_create_#t~ret4#1.base| (select .cse0 0))))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1356 Int) (v_ArrVal_1353 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1353) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| v_ArrVal_1356) 8) 0)) (forall ((v_ArrVal_1354 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~ret4#1.base| (select (store (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1354) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.base|) 0)))))) is different from false [2024-11-14 02:52:31,638 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_1354 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1354) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.base|))) (or (= (select .cse0 0) |c_alloc_and_zero_#res.base|) (= 0 (select .cse0 8))))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_1354 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1354) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.base|) 0) |c_alloc_and_zero_#res.base|)) (forall ((v_ArrVal_1356 Int) (v_ArrVal_1353 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_1353) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| v_ArrVal_1356) 8) 0))))) is different from false [2024-11-14 02:52:31,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:52:31,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2024-11-14 02:52:31,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2024-11-14 02:52:31,814 INFO L349 Elim1Store]: treesize reduction 5, result has 73.7 percent of original size [2024-11-14 02:52:31,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 60 [2024-11-14 02:52:31,829 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 02:52:31,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-14 02:52:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:52:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940574158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [269615837] [2024-11-14 02:52:31,966 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 02:52:31,966 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:52:31,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:52:31,968 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:52:31,969 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:52:32,515 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 02:52:32,527 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:52:47,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [269615837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:47,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:52:47,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [12, 15, 15] total 47 [2024-11-14 02:52:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676068058] [2024-11-14 02:52:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:47,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 02:52:47,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:52:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 02:52:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1722, Unknown=3, NotChecked=258, Total=2162 [2024-11-14 02:52:47,275 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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 02:52:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:51,330 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2024-11-14 02:52:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 02:52:51,331 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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 27 [2024-11-14 02:52:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:51,331 INFO L225 Difference]: With dead ends: 99 [2024-11-14 02:52:51,331 INFO L226 Difference]: Without dead ends: 99 [2024-11-14 02:52:51,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=179, Invalid=1722, Unknown=3, NotChecked=258, Total=2162 [2024-11-14 02:52:51,332 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:51,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-14 02:52:51,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-14 02:52:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-14 02:52:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.382716049382716) internal successors, (112), 93 states have internal predecessors, (112), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:52:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2024-11-14 02:52:51,337 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 27 [2024-11-14 02:52:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:51,337 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-11-14 02:52:51,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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 02:52:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2024-11-14 02:52:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 02:52:51,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:51,338 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:51,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 02:52:51,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-14 02:52:51,542 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:52:51,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash -271422479, now seen corresponding path program 1 times [2024-11-14 02:52:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:51,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294414910] [2024-11-14 02:52:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:52:52,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:52,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294414910] [2024-11-14 02:52:52,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294414910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:52:52,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404951017] [2024-11-14 02:52:52,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:52,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:52,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:52,880 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:52:52,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 02:52:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:53,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-14 02:52:53,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:54,102 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:52:54,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:52:54,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:52:54,711 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 02:52:54,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2024-11-14 02:52:55,356 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 02:52:55,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:52:55,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 15 [2024-11-14 02:52:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:52:55,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:57,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:52:57,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-14 02:52:57,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:52:57,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2024-11-14 02:52:57,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-14 02:52:58,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404951017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:52:58,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [390757693] [2024-11-14 02:52:58,156 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 02:52:58,156 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:52:58,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:52:58,156 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:52:58,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:53:04,082 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 02:53:04,092 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:53:21,444 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 283 DAG size of output: 264 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:53:45,029 WARN L286 SmtUtils]: Spent 13.76s on a formula simplification. DAG size of input: 308 DAG size of output: 289 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:53:49,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7051#(and (= |ULTIMATE.start_destroy_#t~mem13#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_destroy_~l#1.base|) |ULTIMATE.start_destroy_~l#1.offset|)) (<= 0 |ULTIMATE.start_destroy_~l#1.offset|) (or (not (= |ULTIMATE.start_destroy_~l#1.base| 0)) (not (= |ULTIMATE.start_destroy_~l#1.offset| 0))) (= (select |#valid| |ULTIMATE.start_destroy_~l#1.base|) 1) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_destroy_~l#1.base|) |ULTIMATE.start_destroy_~l#1.offset|) 0)) (<= (+ |ULTIMATE.start_destroy_~l#1.offset| 8) (select |#length| |ULTIMATE.start_destroy_~l#1.base|)))' at error location [2024-11-14 02:53:49,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:53:49,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:53:49,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 30 [2024-11-14 02:53:49,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865415941] [2024-11-14 02:53:49,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 02:53:49,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 02:53:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:53:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 02:53:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2803, Unknown=13, NotChecked=0, Total=2970 [2024-11-14 02:53:49,639 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 25 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 02:53:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:53:53,980 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2024-11-14 02:53:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 02:53:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 25 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-11-14 02:53:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:53:53,981 INFO L225 Difference]: With dead ends: 105 [2024-11-14 02:53:53,981 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 02:53:53,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=256, Invalid=4151, Unknown=15, NotChecked=0, Total=4422 [2024-11-14 02:53:53,982 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:53:53,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 538 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 02:53:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 02:53:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-11-14 02:53:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 93 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:53:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2024-11-14 02:53:53,986 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 28 [2024-11-14 02:53:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:53:53,986 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2024-11-14 02:53:53,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 25 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 02:53:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2024-11-14 02:53:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 02:53:53,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:53:53,986 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:53:54,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 02:53:54,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-14 02:53:54,187 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:53:54,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:53:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash 109954834, now seen corresponding path program 2 times [2024-11-14 02:53:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:53:54,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121903472] [2024-11-14 02:53:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:53:54,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:53:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:53:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:53:56,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:53:56,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121903472] [2024-11-14 02:53:56,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121903472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:53:56,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775671873] [2024-11-14 02:53:56,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:53:56,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:53:56,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:53:56,441 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:53:56,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 02:53:56,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 02:53:56,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:53:56,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-14 02:53:56,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:53:56,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-14 02:53:57,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 02:53:57,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 02:53:57,240 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:53:57,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:53:57,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-14 02:53:57,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-14 02:53:57,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:53:57,921 INFO L349 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2024-11-14 02:53:57,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 65 [2024-11-14 02:53:57,965 INFO L349 Elim1Store]: treesize reduction 33, result has 28.3 percent of original size [2024-11-14 02:53:57,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 32 [2024-11-14 02:53:59,026 INFO L349 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2024-11-14 02:53:59,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 45 [2024-11-14 02:53:59,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 02:53:59,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-11-14 02:53:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:53:59,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:54:07,578 INFO L349 Elim1Store]: treesize reduction 255, result has 53.2 percent of original size [2024-11-14 02:54:07,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 3606 treesize of output 2456 [2024-11-14 02:54:09,160 INFO L349 Elim1Store]: treesize reduction 12, result has 95.7 percent of original size [2024-11-14 02:54:09,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 3925 treesize of output 4032 [2024-11-14 02:54:10,405 INFO L349 Elim1Store]: treesize reduction 44, result has 86.5 percent of original size [2024-11-14 02:54:10,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2501 treesize of output 2677 [2024-11-14 02:54:10,752 INFO L224 Elim1Store]: Index analysis took 129 ms [2024-11-14 02:54:12,538 INFO L349 Elim1Store]: treesize reduction 484, result has 52.8 percent of original size [2024-11-14 02:54:12,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 4344 treesize of output 3779 [2024-11-14 02:54:13,001 INFO L224 Elim1Store]: Index analysis took 112 ms [2024-11-14 02:54:14,200 INFO L349 Elim1Store]: treesize reduction 444, result has 40.6 percent of original size [2024-11-14 02:54:14,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 2888 treesize of output 3040 [2024-11-14 02:54:14,499 INFO L224 Elim1Store]: Index analysis took 122 ms [2024-11-14 02:54:14,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:54:14,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2860 treesize of output 3047 [2024-11-14 02:55:04,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2024-11-14 02:55:05,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:55:06,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:55:07,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:55:08,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:55:09,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:55:09,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2024-11-14 02:57:43,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:57:44,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:57:45,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:57:46,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:57:46,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2024-11-14 02:57:51,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:57:51,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2024-11-14 02:57:52,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:57:53,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 02:57:56,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 02:57:56,320 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 02:57:56,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-14 02:57:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151355793] [2024-11-14 02:57:56,322 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 02:57:56,322 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:57:56,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:57:56,323 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:57:56,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:57:56,328 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-14 02:57:56,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:57:56,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-14 02:57:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303054179] [2024-11-14 02:57:56,332 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 02:57:56,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 02:57:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:57:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 02:57:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1218, Unknown=2, NotChecked=0, Total=1332 [2024-11-14 02:57:56,333 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:57:56,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=112, Invalid=1218, Unknown=2, NotChecked=0, Total=1332 [2024-11-14 02:57:56,334 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:57:56,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 02:57:56,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 02:57:56,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-14 02:57:56,537 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-14 02:57:56,539 INFO L158 Benchmark]: Toolchain (without parser) took 853260.11ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 116.8MB in the beginning and 589.9MB in the end (delta: -473.0MB). Peak memory consumption was 746.7MB. Max. memory is 16.1GB. [2024-11-14 02:57:56,540 INFO L158 Benchmark]: CDTParser took 1.44ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:57:56,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 559.85ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 97.9MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:57:56,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.04ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 96.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:57:56,540 INFO L158 Benchmark]: Boogie Preprocessor took 28.96ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 94.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:57:56,540 INFO L158 Benchmark]: RCFGBuilder took 612.46ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 73.6MB in the end (delta: 21.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:57:56,540 INFO L158 Benchmark]: TraceAbstraction took 852013.73ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 72.8MB in the beginning and 589.9MB in the end (delta: -517.1MB). Peak memory consumption was 704.7MB. Max. memory is 16.1GB. [2024-11-14 02:57:56,542 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 559.85ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 97.9MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.04ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 96.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.96ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 94.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 612.46ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 73.6MB in the end (delta: 21.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 852013.73ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 72.8MB in the beginning and 589.9MB in the end (delta: -517.1MB). Peak memory consumption was 704.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/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_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:57:59,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:57:59,154 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2024-11-14 02:57:59,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:57:59,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:57:59,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:57:59,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:57:59,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:57:59,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:57:59,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:57:59,212 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:57:59,213 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:57:59,213 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:57:59,213 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:57:59,213 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:57:59,213 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:57:59,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:57:59,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:57:59,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:57:59,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:57:59,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:57:59,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:57:59,216 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:57:59,216 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:57:59,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:57:59,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:57:59,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:57:59,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:57:59,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:57:59,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:57:59,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:57:59,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:57:59,218 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:57:59,218 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:57:59,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:57:59,218 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:57:59,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 [2024-11-14 02:57:59,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:57:59,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:57:59,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:57:59,541 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:57:59,541 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:57:59,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i Unable to find full path for "g++" [2024-11-14 02:58:01,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:58:01,914 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:58:01,918 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/sv-benchmarks/c/memsafety-broom/sll-lst-shared.i [2024-11-14 02:58:01,951 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data/19573e886/29b2de81a7b74490af4b896f8097159c/FLAG59384d3a6 [2024-11-14 02:58:02,039 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/data/19573e886/29b2de81a7b74490af4b896f8097159c [2024-11-14 02:58:02,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:58:02,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:58:02,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:58:02,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:58:02,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:58:02,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e203b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02, skipping insertion in model container [2024-11-14 02:58:02,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:58:02,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:58:02,556 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:58:02,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:58:02,693 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:58:02,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02 WrapperNode [2024-11-14 02:58:02,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:58:02,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:58:02,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:58:02,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:58:02,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,754 INFO L138 Inliner]: procedures = 122, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2024-11-14 02:58:02,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:58:02,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:58:02,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:58:02,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:58:02,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:58:02,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:58:02,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:58:02,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:58:02,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (1/1) ... [2024-11-14 02:58:02,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:58:02,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:02,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:58:02,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:58:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 02:58:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 02:58:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:58:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:58:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:58:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:58:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 02:58:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:58:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:58:03,027 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:58:03,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:58:03,483 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-14 02:58:03,483 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:58:03,493 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:58:03,493 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 02:58:03,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:58:03 BoogieIcfgContainer [2024-11-14 02:58:03,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:58:03,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:58:03,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:58:03,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:58:03,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:58:02" (1/3) ... [2024-11-14 02:58:03,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3046d84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:58:03, skipping insertion in model container [2024-11-14 02:58:03,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:02" (2/3) ... [2024-11-14 02:58:03,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3046d84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:58:03, skipping insertion in model container [2024-11-14 02:58:03,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:58:03" (3/3) ... [2024-11-14 02:58:03,504 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-shared.i [2024-11-14 02:58:03,540 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:58:03,541 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-lst-shared.i that has 2 procedures, 75 locations, 1 initial locations, 3 loop locations, and 29 error locations. [2024-11-14 02:58:03,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:58:03,601 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=None, 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;@2e8c561b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:58:03,601 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-14 02:58:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:58:03,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:03,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 02:58:03,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 34515278, now seen corresponding path program 1 times [2024-11-14 02:58:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968625062] [2024-11-14 02:58:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:03,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:03,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:03,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 02:58:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:03,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:03,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:03,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:03,815 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 02:58:03,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:03,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:03,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968625062] [2024-11-14 02:58:03,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968625062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:03,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:03,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:58:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522074667] [2024-11-14 02:58:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:03,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:03,857 INFO L87 Difference]: Start difference. First operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:58:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:04,050 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-14 02:58:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:04,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 02:58:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:04,059 INFO L225 Difference]: With dead ends: 74 [2024-11-14 02:58:04,059 INFO L226 Difference]: Without dead ends: 72 [2024-11-14 02:58:04,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:04,064 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:04,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-14 02:58:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-14 02:58:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-14 02:58:04,102 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 5 [2024-11-14 02:58:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:04,102 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-14 02:58:04,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:58:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-14 02:58:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:58:04,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:04,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 02:58:04,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 02:58:04,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:04,305 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:04,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash 34515279, now seen corresponding path program 1 times [2024-11-14 02:58:04,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:04,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626689178] [2024-11-14 02:58:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:04,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:04,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 02:58:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:04,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:58:04,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:04,417 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 02:58:04,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:04,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:04,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626689178] [2024-11-14 02:58:04,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626689178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:04,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:04,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:58:04,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157090314] [2024-11-14 02:58:04,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:04,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:04,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:04,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:04,423 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:58:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:04,642 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2024-11-14 02:58:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:04,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-14 02:58:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:04,644 INFO L225 Difference]: With dead ends: 71 [2024-11-14 02:58:04,644 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 02:58:04,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:04,645 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:04,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 02:58:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-14 02:58:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-14 02:58:04,660 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 5 [2024-11-14 02:58:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:04,660 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-14 02:58:04,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:58:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-14 02:58:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:58:04,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:04,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:04,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 02:58:04,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:04,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:04,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash -44799900, now seen corresponding path program 1 times [2024-11-14 02:58:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:04,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666898989] [2024-11-14 02:58:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:04,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:04,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:04,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:04,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 02:58:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:04,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:58:04,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:04,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:04,959 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 02:58:04,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:04,960 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666898989] [2024-11-14 02:58:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666898989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:58:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374084365] [2024-11-14 02:58:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:04,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:04,962 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 02:58:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:05,147 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-14 02:58:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 02:58:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:05,149 INFO L225 Difference]: With dead ends: 75 [2024-11-14 02:58:05,150 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 02:58:05,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:05,151 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:05,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 02:58:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-14 02:58:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-14 02:58:05,162 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 10 [2024-11-14 02:58:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:05,164 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-14 02:58:05,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 02:58:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-14 02:58:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:58:05,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:05,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:05,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:05,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:05,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:05,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash -44799899, now seen corresponding path program 1 times [2024-11-14 02:58:05,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:05,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910545803] [2024-11-14 02:58:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:05,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:05,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:05,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:05,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 02:58:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:05,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:58:05,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:05,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:05,484 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 02:58:05,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:05,484 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910545803] [2024-11-14 02:58:05,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910545803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:05,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:05,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:58:05,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395853281] [2024-11-14 02:58:05,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:05,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:58:05,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:05,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:58:05,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:05,486 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 02:58:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:05,673 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-14 02:58:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:58:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 02:58:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:05,675 INFO L225 Difference]: With dead ends: 74 [2024-11-14 02:58:05,675 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 02:58:05,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:58:05,676 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:05,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 115 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 02:58:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-14 02:58:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-14 02:58:05,683 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 10 [2024-11-14 02:58:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:05,683 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-14 02:58:05,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 02:58:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-14 02:58:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:58:05,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:05,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:05,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:05,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:05,884 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:05,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash -103031451, now seen corresponding path program 1 times [2024-11-14 02:58:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:05,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453425645] [2024-11-14 02:58:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:05,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:05,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:05,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 02:58:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:06,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:58:06,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:06,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:06,108 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 02:58:06,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 02:58:06,190 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 02:58:06,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:06,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453425645] [2024-11-14 02:58:06,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453425645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:06,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:06,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:58:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433648638] [2024-11-14 02:58:06,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:06,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:06,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:06,192 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 02:58:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:06,636 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-14 02:58:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:58:06,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2024-11-14 02:58:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:06,638 INFO L225 Difference]: With dead ends: 71 [2024-11-14 02:58:06,638 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 02:58:06,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:06,639 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:06,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 197 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:58:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 02:58:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-14 02:58:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-14 02:58:06,654 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2024-11-14 02:58:06,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:06,654 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-14 02:58:06,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 02:58:06,654 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-14 02:58:06,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:58:06,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:06,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:06,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 02:58:06,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:06,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:06,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash -103031450, now seen corresponding path program 1 times [2024-11-14 02:58:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:06,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117070479] [2024-11-14 02:58:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:06,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:06,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:06,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:06,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 02:58:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:06,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 02:58:06,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:06,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:06,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:07,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:07,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:07,225 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:07,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:07,279 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 02:58:07,280 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:07,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:07,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117070479] [2024-11-14 02:58:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117070479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:07,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:07,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:58:07,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788593127] [2024-11-14 02:58:07,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:07,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:07,283 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 02:58:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:07,795 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-14 02:58:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:58:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2024-11-14 02:58:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:07,797 INFO L225 Difference]: With dead ends: 70 [2024-11-14 02:58:07,797 INFO L226 Difference]: Without dead ends: 70 [2024-11-14 02:58:07,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:07,798 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:07,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 194 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-14 02:58:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-14 02:58:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-14 02:58:07,804 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2024-11-14 02:58:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:07,804 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-14 02:58:07,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 02:58:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-14 02:58:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 02:58:07,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:07,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:07,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:08,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:08,006 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:08,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2045697995, now seen corresponding path program 1 times [2024-11-14 02:58:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477432053] [2024-11-14 02:58:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:08,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:08,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:08,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 02:58:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:08,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 02:58:08,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:08,206 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 02:58:08,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:08,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477432053] [2024-11-14 02:58:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477432053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:08,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:58:08,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540094057] [2024-11-14 02:58:08,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:08,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:08,208 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 02:58:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:08,645 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-14 02:58:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 18 [2024-11-14 02:58:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:08,647 INFO L225 Difference]: With dead ends: 86 [2024-11-14 02:58:08,647 INFO L226 Difference]: Without dead ends: 86 [2024-11-14 02:58:08,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:08,648 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:08,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 192 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:58:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-14 02:58:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-14 02:58:08,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 75 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2024-11-14 02:58:08,655 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 18 [2024-11-14 02:58:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:08,655 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2024-11-14 02:58:08,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 02:58:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2024-11-14 02:58:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 02:58:08,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:08,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:08,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-14 02:58:08,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:08,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:08,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2045697996, now seen corresponding path program 1 times [2024-11-14 02:58:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:08,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222304948] [2024-11-14 02:58:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:08,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:08,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:08,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 02:58:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:08,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 02:58:08,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:09,235 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 02:58:09,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:09,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222304948] [2024-11-14 02:58:09,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222304948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:09,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:09,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 02:58:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191580978] [2024-11-14 02:58:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:09,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 02:58:09,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 02:58:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:58:09,237 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 02:58:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:09,864 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2024-11-14 02:58:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:58:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 18 [2024-11-14 02:58:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:09,865 INFO L225 Difference]: With dead ends: 89 [2024-11-14 02:58:09,865 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 02:58:09,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:58:09,866 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:09,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 347 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 02:58:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-11-14 02:58:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 75 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-14 02:58:09,876 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 18 [2024-11-14 02:58:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:09,876 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-14 02:58:09,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 02:58:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-14 02:58:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 02:58:09,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:09,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:09,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-14 02:58:10,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:10,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:10,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1179294085, now seen corresponding path program 1 times [2024-11-14 02:58:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:10,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223577017] [2024-11-14 02:58:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:10,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:10,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:10,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-14 02:58:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:10,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:58:10,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:10,299 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 02:58:10,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:10,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:10,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223577017] [2024-11-14 02:58:10,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223577017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:10,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:10,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 02:58:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300058522] [2024-11-14 02:58:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:10,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:58:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:58:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:10,301 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 02:58:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:10,473 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-14 02:58:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:58:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 20 [2024-11-14 02:58:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:10,475 INFO L225 Difference]: With dead ends: 85 [2024-11-14 02:58:10,475 INFO L226 Difference]: Without dead ends: 85 [2024-11-14 02:58:10,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:10,476 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 18 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:10,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 382 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-14 02:58:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-14 02:58:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.543859649122807) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-14 02:58:10,488 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 20 [2024-11-14 02:58:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:10,488 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-14 02:58:10,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 02:58:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-14 02:58:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 02:58:10,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:10,489 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:10,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:10,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:10,689 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:10,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash -804729291, now seen corresponding path program 1 times [2024-11-14 02:58:10,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:10,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729933378] [2024-11-14 02:58:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:10,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:10,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:10,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 02:58:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:10,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 02:58:10,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:10,887 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (_ bv1 1)))) is different from true [2024-11-14 02:58:10,931 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 02:58:10,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 02:58:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:58:10,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:10,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729933378] [2024-11-14 02:58:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729933378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:10,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:10,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731218929] [2024-11-14 02:58:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:10,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:10,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:10,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-14 02:58:10,960 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:11,159 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2024-11-14 02:58:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:58:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-14 02:58:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:11,161 INFO L225 Difference]: With dead ends: 83 [2024-11-14 02:58:11,161 INFO L226 Difference]: Without dead ends: 83 [2024-11-14 02:58:11,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-14 02:58:11,162 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 9 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:11,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 86 Unchecked, 0.2s Time] [2024-11-14 02:58:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-14 02:58:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-14 02:58:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 76 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2024-11-14 02:58:11,170 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 21 [2024-11-14 02:58:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:11,170 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2024-11-14 02:58:11,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2024-11-14 02:58:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 02:58:11,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:11,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:11,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-14 02:58:11,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:11,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:11,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:11,375 INFO L85 PathProgramCache]: Analyzing trace with hash -804729290, now seen corresponding path program 1 times [2024-11-14 02:58:11,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:11,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103781265] [2024-11-14 02:58:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:11,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:11,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:11,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:11,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 02:58:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:11,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 02:58:11,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:11,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:11,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:11,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:11,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:11,722 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:11,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:11,898 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-14 02:58:11,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:11,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:11,967 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:11,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-14 02:58:11,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:58:12,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103781265] [2024-11-14 02:58:12,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103781265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1148614621] [2024-11-14 02:58:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:12,372 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:58:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:58:12,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:58:12,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 02:58:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:12,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 02:58:12,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:12,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:12,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:12,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:12,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:12,798 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:12,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:12,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:12,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:12,956 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:12,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-14 02:58:12,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:58:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1148614621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560387291] [2024-11-14 02:58:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:13,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:13,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:13,216 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:13,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 02:58:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:13,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 02:58:13,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:13,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:13,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:13,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:13,489 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:13,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:13,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:13,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:13,622 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:13,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-14 02:58:13,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:58:13,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560387291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:13,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:58:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 9 [2024-11-14 02:58:13,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545449647] [2024-11-14 02:58:13,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:58:13,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:58:13,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:58:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-14 02:58:13,883 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:14,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:14,710 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-14 02:58:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:58:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-14 02:58:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:14,714 INFO L225 Difference]: With dead ends: 85 [2024-11-14 02:58:14,714 INFO L226 Difference]: Without dead ends: 85 [2024-11-14 02:58:14,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-14 02:58:14,714 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:14,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 284 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 79 Unchecked, 0.7s Time] [2024-11-14 02:58:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-14 02:58:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-14 02:58:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 76 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-14 02:58:14,719 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 21 [2024-11-14 02:58:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:14,719 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-14 02:58:14,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:58:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-14 02:58:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 02:58:14,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:14,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:14,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 02:58:14,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-14 02:58:15,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 02:58:15,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:58:15,321 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:15,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:15,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2098035957, now seen corresponding path program 1 times [2024-11-14 02:58:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:15,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510018406] [2024-11-14 02:58:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:15,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:15,324 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:15,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 02:58:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:15,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 02:58:15,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:15,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:15,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:58:15,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:58:15,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 02:58:15,607 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:58:15,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:58:15,742 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 02:58:15,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:15,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:15,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510018406] [2024-11-14 02:58:15,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510018406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:15,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:58:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149264801] [2024-11-14 02:58:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:15,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:58:15,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:58:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:15,744 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 02:58:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:16,355 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2024-11-14 02:58:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:58:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 21 [2024-11-14 02:58:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:16,358 INFO L225 Difference]: With dead ends: 88 [2024-11-14 02:58:16,358 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 02:58:16,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:16,359 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:16,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 254 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 02:58:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-14 02:58:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.421875) internal successors, (91), 83 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-14 02:58:16,366 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 21 [2024-11-14 02:58:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:16,366 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-14 02:58:16,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 02:58:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-14 02:58:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 02:58:16,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:16,367 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:16,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-14 02:58:16,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:16,572 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:16,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:16,573 INFO L85 PathProgramCache]: Analyzing trace with hash 817139119, now seen corresponding path program 1 times [2024-11-14 02:58:16,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:16,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51927401] [2024-11-14 02:58:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:16,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:16,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:16,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-14 02:58:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:16,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:58:16,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:16,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:58:16,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 02:58:16,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-14 02:58:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:58:16,830 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:16,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:58:16,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51927401] [2024-11-14 02:58:16,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51927401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:16,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:16,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:58:16,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245344565] [2024-11-14 02:58:16,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:16,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:58:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:58:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:58:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:16,831 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:58:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:17,246 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-14 02:58:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:17,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-14 02:58:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:17,248 INFO L225 Difference]: With dead ends: 87 [2024-11-14 02:58:17,248 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 02:58:17,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:17,248 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:17,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 238 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:58:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 02:58:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 02:58:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.390625) internal successors, (89), 82 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-14 02:58:17,252 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 24 [2024-11-14 02:58:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:17,252 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-14 02:58:17,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:58:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-14 02:58:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 02:58:17,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:17,253 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:17,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-14 02:58:17,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:17,453 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 02:58:17,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:17,454 INFO L85 PathProgramCache]: Analyzing trace with hash 817139120, now seen corresponding path program 1 times [2024-11-14 02:58:17,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:58:17,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844572775] [2024-11-14 02:58:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:17,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:58:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:58:17,458 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:58:17,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d17c825-8f35-421b-b967-93401dca593d/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-14 02:58:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:17,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 02:58:17,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:17,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5