./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.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_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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_87fa2d81-87f0-47df-913c-472263d33d61/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 f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:27:09,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:27:09,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-14 05:27:09,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:27:09,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:27:09,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:27:09,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:27:09,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:27:09,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:27:09,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:27:09,984 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:27:09,985 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:27:09,985 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:27:09,985 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:27:09,985 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:27:09,985 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:27:09,986 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:27:09,986 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:27:09,986 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:27:09,986 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:27:09,986 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:27:09,987 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:27:09,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:27:09,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:27:09,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:27:09,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:27:09,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:27:09,988 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:27:09,988 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:27:09,989 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:27:09,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:27:09,989 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:27:09,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:27:09,989 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:27:09,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:27:09,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:27:09,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:27:09,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:27:09,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:27:09,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:27:09,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:27:09,991 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:27:09,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:27:09,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:27:09,991 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:27:09,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:27:09,991 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_87fa2d81-87f0-47df-913c-472263d33d61/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 -> f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1 [2024-11-14 05:27:10,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:27:10,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:27:10,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:27:10,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:27:10,416 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:27:10,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i Unable to find full path for "g++" [2024-11-14 05:27:12,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:27:13,472 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:27:13,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i [2024-11-14 05:27:13,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data/1597bb8e2/d5558d0e98ff4809ab7993d184f47b17/FLAGb7d9ceaa6 [2024-11-14 05:27:14,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data/1597bb8e2/d5558d0e98ff4809ab7993d184f47b17 [2024-11-14 05:27:14,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:27:14,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:27:14,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:27:14,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:27:14,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:27:14,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442701ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14, skipping insertion in model container [2024-11-14 05:27:14,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:27:14,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:27:14,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:27:14,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:27:14,665 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:27:14,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14 WrapperNode [2024-11-14 05:27:14,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:27:14,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:27:14,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:27:14,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:27:14,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,739 INFO L138 Inliner]: procedures = 121, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2024-11-14 05:27:14,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:27:14,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:27:14,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:27:14,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:27:14,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:27:14,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:27:14,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:27:14,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:27:14,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (1/1) ... [2024-11-14 05:27:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:27:14,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:14,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:27:14,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:27:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-14 05:27:14,853 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-14 05:27:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 05:27:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 05:27:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:27:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:27:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:27:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:27:14,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:27:14,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:27:14,995 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:27:14,998 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:27:15,492 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2024-11-14 05:27:15,492 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:27:15,586 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:27:15,587 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-14 05:27:15,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:27:15 BoogieIcfgContainer [2024-11-14 05:27:15,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:27:15,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:27:15,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:27:15,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:27:15,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:27:14" (1/3) ... [2024-11-14 05:27:15,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe74e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:27:15, skipping insertion in model container [2024-11-14 05:27:15,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:14" (2/3) ... [2024-11-14 05:27:15,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe74e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:27:15, skipping insertion in model container [2024-11-14 05:27:15,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:27:15" (3/3) ... [2024-11-14 05:27:15,601 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-shared-sll-after.i [2024-11-14 05:27:15,622 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:27:15,625 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-shared-sll-after.i that has 3 procedures, 68 locations, 1 initial locations, 5 loop locations, and 29 error locations. [2024-11-14 05:27:15,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:27:15,706 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;@3c6dd111, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:27:15,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-14 05:27:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 32 states have (on average 2.125) internal successors, (68), 61 states have internal predecessors, (68), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:27:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:27:15,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:15,723 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:27:15,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:15,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash 5642994, now seen corresponding path program 1 times [2024-11-14 05:27:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:15,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030174983] [2024-11-14 05:27:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:16,067 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 05:27:16,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030174983] [2024-11-14 05:27:16,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030174983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:16,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:16,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:27:16,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734497935] [2024-11-14 05:27:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:16,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:27:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:27:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:27:16,130 INFO L87 Difference]: Start difference. First operand has 68 states, 32 states have (on average 2.125) internal successors, (68), 61 states have internal predecessors, (68), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 05:27:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:16,288 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2024-11-14 05:27:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:27:16,291 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 05:27:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:16,299 INFO L225 Difference]: With dead ends: 66 [2024-11-14 05:27:16,300 INFO L226 Difference]: Without dead ends: 65 [2024-11-14 05:27:16,302 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 05:27:16,306 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:16,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-14 05:27:16,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-14 05:27:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 32 states have (on average 1.96875) internal successors, (63), 58 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:27:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2024-11-14 05:27:16,357 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 4 [2024-11-14 05:27:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:16,357 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2024-11-14 05:27:16,358 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 05:27:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2024-11-14 05:27:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 05:27:16,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:16,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 05:27:16,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:27:16,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:16,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash 5642995, now seen corresponding path program 1 times [2024-11-14 05:27:16,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:16,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857890170] [2024-11-14 05:27:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:16,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:16,548 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 05:27:16,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:16,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857890170] [2024-11-14 05:27:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857890170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:16,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:27:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603192236] [2024-11-14 05:27:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:16,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:27:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:27:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:27:16,552 INFO L87 Difference]: Start difference. First operand 65 states and 71 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 05:27:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:16,651 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2024-11-14 05:27:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:27:16,652 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 05:27:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:16,653 INFO L225 Difference]: With dead ends: 63 [2024-11-14 05:27:16,654 INFO L226 Difference]: Without dead ends: 63 [2024-11-14 05:27:16,654 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 05:27:16,655 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:16,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-14 05:27:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-14 05:27:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:27:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2024-11-14 05:27:16,664 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 4 [2024-11-14 05:27:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:16,665 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2024-11-14 05:27:16,665 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 05:27:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2024-11-14 05:27:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:27:16,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:16,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:16,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:27:16,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:16,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash -880240642, now seen corresponding path program 1 times [2024-11-14 05:27:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058845258] [2024-11-14 05:27:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:16,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:16,789 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 05:27:16,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:16,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058845258] [2024-11-14 05:27:16,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058845258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:16,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:16,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:27:16,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657729075] [2024-11-14 05:27:16,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:16,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:27:16,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:27:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:27:16,794 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:27:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:16,915 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2024-11-14 05:27:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:27:16,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 05:27:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:16,918 INFO L225 Difference]: With dead ends: 62 [2024-11-14 05:27:16,918 INFO L226 Difference]: Without dead ends: 62 [2024-11-14 05:27:16,919 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 05:27:16,920 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:16,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-14 05:27:16,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-14 05:27:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 32 states have (on average 1.875) internal successors, (60), 55 states have internal predecessors, (60), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:27:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-14 05:27:16,935 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 13 [2024-11-14 05:27:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:16,937 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-14 05:27:16,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:27:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-14 05:27:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:27:16,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:16,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:16,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:27:16,939 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:16,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash -880240641, now seen corresponding path program 1 times [2024-11-14 05:27:16,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:16,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76231624] [2024-11-14 05:27:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:16,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:17,158 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 05:27:17,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76231624] [2024-11-14 05:27:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76231624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:17,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:17,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:27:17,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187308093] [2024-11-14 05:27:17,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:17,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:27:17,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:27:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:27:17,160 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:27:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:17,272 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2024-11-14 05:27:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:27:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 05:27:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:17,274 INFO L225 Difference]: With dead ends: 61 [2024-11-14 05:27:17,274 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 05:27:17,274 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 05:27:17,275 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:17,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 05:27:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 05:27:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 1.84375) internal successors, (59), 54 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:27:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-14 05:27:17,288 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 13 [2024-11-14 05:27:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:17,288 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-14 05:27:17,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:27:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-14 05:27:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 05:27:17,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:17,292 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:17,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:27:17,292 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:17,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1466056316, now seen corresponding path program 1 times [2024-11-14 05:27:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557324105] [2024-11-14 05:27:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:17,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:17,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557324105] [2024-11-14 05:27:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557324105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569195080] [2024-11-14 05:27:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:17,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:17,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:17,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:17,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:27:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:17,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:27:17,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:18,010 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 05:27:18,091 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 05:27:18,180 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 05:27:18,181 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 05:27:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-14 05:27:18,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569195080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:18,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584935298] [2024-11-14 05:27:18,341 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 05:27:18,341 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:18,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:18,354 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:18,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:19,126 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 67 for LOIs [2024-11-14 05:27:19,312 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:24,090 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '646#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_create_~now~1#1.base_21| Int)) (and (or (and (<= (+ |ULTIMATE.start_create_~sll~1#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#length_63| (Array Int Int))) (= |#length| (store |v_#length_63| |ULTIMATE.start_create_#t~ret11#1.base| 16))) (not (= |ULTIMATE.start_create_~sll~1#1.base| 0)) (exists ((|v_#valid_79| (Array Int Int))) (= (select |v_#valid_79| |ULTIMATE.start_create_~sll~1#1.base|) 0)) (exists ((|v_#memory_$Pointer$.base_68| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_68| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.base_68| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)))) (exists ((|v_#memory_$Pointer$.offset_68| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_68| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.offset_68| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |v_ULTIMATE.start_create_~now~1#1.base_21| |ULTIMATE.start_create_~sll~1#1.base|) (exists ((|v_ULTIMATE.start_create_#t~nondet10#1_12| Int)) (and (<= |v_ULTIMATE.start_create_#t~nondet10#1_12| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet10#1_12| 2147483648)) (not (= |v_ULTIMATE.start_create_#t~nondet10#1_12| 0)))) (<= (+ |ULTIMATE.start_create_#t~ret11#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#valid_81| (Array Int Int))) (and (= (select |v_#valid_81| |ULTIMATE.start_create_#t~ret11#1.base|) 0) (= (store |v_#valid_81| |ULTIMATE.start_create_#t~ret11#1.base| 1) |#valid|))) (not (= |ULTIMATE.start_create_#t~ret11#1.base| 0))) (and (exists ((|v_#valid_80| (Array Int Int))) (= (select |v_#valid_80| |ULTIMATE.start_create_~sll~1#1.base|) 0)) (<= (+ |ULTIMATE.start_create_~sll~1#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_65| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_65| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.offset_65| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)))) (not (= |ULTIMATE.start_create_~sll~1#1.base| 0)) (exists ((|v_#memory_$Pointer$.base_65| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_65| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.base_65| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)) |#memory_$Pointer$.base|)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_62| (Array Int Int))) (= (store |v_#length_62| |ULTIMATE.start_create_#t~ret11#1.base| 16) |#length|)) (= |v_ULTIMATE.start_create_~now~1#1.base_21| |ULTIMATE.start_create_~sll~1#1.base|) (exists ((|v_ULTIMATE.start_create_#t~nondet10#1_12| Int)) (and (<= |v_ULTIMATE.start_create_#t~nondet10#1_12| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet10#1_12| 2147483648)) (not (= |v_ULTIMATE.start_create_#t~nondet10#1_12| 0)))) (exists ((|v_#valid_79| (Array Int Int))) (and (= |#valid| (store |v_#valid_79| |ULTIMATE.start_create_#t~ret11#1.base| 1)) (= (select |v_#valid_79| |ULTIMATE.start_create_#t~ret11#1.base|) 0))) (<= (+ |ULTIMATE.start_create_#t~ret11#1.base| 1) |#StackHeapBarrier|) (not (= |ULTIMATE.start_create_#t~ret11#1.base| 0)))) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~1#1.base_21|) 1)))) (= |ULTIMATE.start_create_#t~ret11#1.offset| 0) (= |ULTIMATE.start_create_~now~1#1.offset| 0) (= |ULTIMATE.start_create_~sll~1#1.offset| 0))' at error location [2024-11-14 05:27:24,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:24,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:27:24,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2024-11-14 05:27:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981722102] [2024-11-14 05:27:24,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:24,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:27:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:27:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=356, Unknown=2, NotChecked=38, Total=462 [2024-11-14 05:27:24,093 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:27:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:24,606 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2024-11-14 05:27:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:27:24,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2024-11-14 05:27:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:24,608 INFO L225 Difference]: With dead ends: 65 [2024-11-14 05:27:24,608 INFO L226 Difference]: Without dead ends: 65 [2024-11-14 05:27:24,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=79, Invalid=429, Unknown=2, NotChecked=42, Total=552 [2024-11-14 05:27:24,610 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 3 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:24,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 224 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 279 Invalid, 0 Unknown, 71 Unchecked, 0.3s Time] [2024-11-14 05:27:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-14 05:27:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-11-14 05:27:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.8) internal successors, (63), 56 states have internal predecessors, (63), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:27:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-11-14 05:27:24,618 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 15 [2024-11-14 05:27:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:24,619 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-11-14 05:27:24,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:27:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-11-14 05:27:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 05:27:24,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:24,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:24,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:27:24,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:24,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:24,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1466056317, now seen corresponding path program 1 times [2024-11-14 05:27:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303423529] [2024-11-14 05:27:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:25,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303423529] [2024-11-14 05:27:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303423529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:25,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937159537] [2024-11-14 05:27:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:25,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:25,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:25,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:25,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:27:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:25,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-14 05:27:25,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:25,542 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 05:27:25,557 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 8 treesize of output 1 [2024-11-14 05:27:25,777 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 05:27:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:27:25,817 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 05:27:25,835 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:27:25,835 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 05:27:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-14 05:27:25,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:26,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937159537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:26,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750314564] [2024-11-14 05:27:26,069 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 05:27:26,070 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:26,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:26,070 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:26,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:26,377 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 67 for LOIs [2024-11-14 05:27:26,511 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:29,188 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '857#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_create_~now~1#1.base_22| Int)) (and (<= (select |#length| |v_ULTIMATE.start_create_~now~1#1.base_22|) 7) (or (and (<= (+ |ULTIMATE.start_create_~sll~1#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#valid_92| (Array Int Int))) (and (= (store |v_#valid_92| |ULTIMATE.start_create_#t~ret11#1.base| 1) |#valid|) (= (select |v_#valid_92| |ULTIMATE.start_create_#t~ret11#1.base|) 0))) (not (= |ULTIMATE.start_create_~sll~1#1.base| 0)) (exists ((|v_#memory_$Pointer$.base_79| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_79| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.base_79| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)) |#memory_$Pointer$.base|)) (exists ((|v_#length_75| (Array Int Int))) (= (store |v_#length_75| |ULTIMATE.start_create_#t~ret11#1.base| 16) |#length|)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#valid_90| (Array Int Int))) (= (select |v_#valid_90| |ULTIMATE.start_create_~sll~1#1.base|) 0)) (exists ((|v_ULTIMATE.start_create_#t~nondet10#1_13| Int)) (and (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet10#1_13| 2147483648)) (not (= |v_ULTIMATE.start_create_#t~nondet10#1_13| 0)) (<= |v_ULTIMATE.start_create_#t~nondet10#1_13| 2147483647))) (<= (+ |ULTIMATE.start_create_#t~ret11#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_79| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_79| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.offset_79| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)))) (= |v_ULTIMATE.start_create_~now~1#1.base_22| |ULTIMATE.start_create_~sll~1#1.base|) (not (= |ULTIMATE.start_create_#t~ret11#1.base| 0))) (and (<= (+ |ULTIMATE.start_create_~sll~1#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_76| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_76| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.offset_76| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)))) (not (= |ULTIMATE.start_create_~sll~1#1.base| 0)) (exists ((|v_#memory_$Pointer$.base_78| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_78| |ULTIMATE.start_create_#t~ret11#1.base| (store (store (select |v_#memory_$Pointer$.base_78| |ULTIMATE.start_create_#t~ret11#1.base|) 0 0) 8 0)))) (exists ((|v_#length_74| (Array Int Int))) (= (store |v_#length_74| |ULTIMATE.start_create_#t~ret11#1.base| 16) |#length|)) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#valid_91| (Array Int Int))) (= (select |v_#valid_91| |ULTIMATE.start_create_~sll~1#1.base|) 0)) (exists ((|v_ULTIMATE.start_create_#t~nondet10#1_13| Int)) (and (<= 0 (+ |v_ULTIMATE.start_create_#t~nondet10#1_13| 2147483648)) (not (= |v_ULTIMATE.start_create_#t~nondet10#1_13| 0)) (<= |v_ULTIMATE.start_create_#t~nondet10#1_13| 2147483647))) (<= (+ |ULTIMATE.start_create_#t~ret11#1.base| 1) |#StackHeapBarrier|) (= |v_ULTIMATE.start_create_~now~1#1.base_22| |ULTIMATE.start_create_~sll~1#1.base|) (exists ((|v_#valid_90| (Array Int Int))) (and (= (select |v_#valid_90| |ULTIMATE.start_create_#t~ret11#1.base|) 0) (= (store |v_#valid_90| |ULTIMATE.start_create_#t~ret11#1.base| 1) |#valid|))) (not (= |ULTIMATE.start_create_#t~ret11#1.base| 0)))))) (= |ULTIMATE.start_create_#t~ret11#1.offset| 0) (= |ULTIMATE.start_create_~sll~1#1.offset| 0))' at error location [2024-11-14 05:27:29,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:29,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:27:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2024-11-14 05:27:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792035496] [2024-11-14 05:27:29,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:29,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 05:27:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 05:27:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=657, Unknown=1, NotChecked=52, Total=812 [2024-11-14 05:27:29,192 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 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 05:27:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:29,802 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2024-11-14 05:27:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:27:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 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 15 [2024-11-14 05:27:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:29,805 INFO L225 Difference]: With dead ends: 66 [2024-11-14 05:27:29,805 INFO L226 Difference]: Without dead ends: 66 [2024-11-14 05:27:29,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=117, Invalid=756, Unknown=1, NotChecked=56, Total=930 [2024-11-14 05:27:29,807 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:29,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 276 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 71 Unchecked, 0.4s Time] [2024-11-14 05:27:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-14 05:27:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-14 05:27:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.75) internal successors, (63), 57 states have internal predecessors, (63), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:27:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-11-14 05:27:29,825 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 15 [2024-11-14 05:27:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:29,826 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-11-14 05:27:29,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 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 05:27:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-11-14 05:27:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:27:29,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:29,828 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 05:27:29,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:27:30,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 05:27:30,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:30,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1209037982, now seen corresponding path program 1 times [2024-11-14 05:27:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:30,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65236657] [2024-11-14 05:27:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:30,380 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 05:27:30,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:30,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65236657] [2024-11-14 05:27:30,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65236657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:30,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:30,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 05:27:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266839448] [2024-11-14 05:27:30,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:30,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:27:30,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:27:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:27:30,382 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 05:27:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:30,867 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-14 05:27:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:27:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 20 [2024-11-14 05:27:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:30,868 INFO L225 Difference]: With dead ends: 66 [2024-11-14 05:27:30,869 INFO L226 Difference]: Without dead ends: 66 [2024-11-14 05:27:30,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:27:30,870 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 26 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:30,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 237 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:27:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-14 05:27:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-14 05:27:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 38 states have (on average 1.736842105263158) internal successors, (66), 58 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:27:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-14 05:27:30,884 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2024-11-14 05:27:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:30,885 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-14 05:27:30,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 05:27:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-14 05:27:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:27:30,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:30,886 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 05:27:30,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:27:30,887 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:30,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1209037981, now seen corresponding path program 1 times [2024-11-14 05:27:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642999426] [2024-11-14 05:27:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:31,375 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 05:27:31,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:31,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642999426] [2024-11-14 05:27:31,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642999426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:31,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:31,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:27:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893903202] [2024-11-14 05:27:31,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:31,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:27:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:31,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:27:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:27:31,377 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 12 states, 8 states have (on average 2.0) internal successors, (16), 10 states have internal predecessors, (16), 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 05:27:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:31,938 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2024-11-14 05:27:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:27:31,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 2.0) internal successors, (16), 10 states have internal predecessors, (16), 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 20 [2024-11-14 05:27:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:31,941 INFO L225 Difference]: With dead ends: 82 [2024-11-14 05:27:31,942 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 05:27:31,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:27:31,943 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:31,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 243 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:27:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 05:27:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2024-11-14 05:27:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 66 states have internal predecessors, (76), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:27:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-14 05:27:31,952 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 20 [2024-11-14 05:27:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:31,952 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-14 05:27:31,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 2.0) internal successors, (16), 10 states have internal predecessors, (16), 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 05:27:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-14 05:27:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:27:31,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:31,953 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:31,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 05:27:31,954 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:31,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2105151832, now seen corresponding path program 1 times [2024-11-14 05:27:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013083743] [2024-11-14 05:27:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:32,255 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 05:27:32,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013083743] [2024-11-14 05:27:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013083743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:32,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205030502] [2024-11-14 05:27:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:32,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:32,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:32,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:32,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:27:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:32,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:27:32,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:32,387 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 05:27:32,416 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-14 05:27:32,438 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:27:32,439 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 12 treesize of output 14 [2024-11-14 05:27:32,454 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 05:27:32,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:32,626 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 05:27:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205030502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420809915] [2024-11-14 05:27:32,631 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 05:27:32,632 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:32,632 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:32,632 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:32,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:33,159 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 107 for LOIs [2024-11-14 05:27:33,252 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:27:33,267 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:38,831 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1466#(and (= |ULTIMATE.start_create_internal_#t~ret7#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_create_internal_~now~0#1.offset| 0) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.base_22| Int)) (and (or (and (exists ((|v_#valid_113| (Array Int Int))) (= (select |v_#valid_113| |ULTIMATE.start_main_~l~0#1.base|) 0)) (exists ((|v_#memory_$Pointer$.offset_98| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_98| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.offset_98| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_create_internal_~sll~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~l~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#valid_114| (Array Int Int))) (= (select |v_#valid_114| |ULTIMATE.start_create_internal_~sll~0#1.base|) 0)) (exists ((|v_#length_91| (Array Int Int))) (= (store |v_#length_91| |ULTIMATE.start_create_internal_#t~ret7#1.base| 8) |#length|)) (exists ((|v_#memory_$Pointer$.base_98| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_98| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.base_98| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#valid_116| (Array Int Int))) (and (= (store |v_#valid_116| |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#valid|) (= (select |v_#valid_116| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0))) (not (= |ULTIMATE.start_create_internal_#t~ret7#1.base| 0)) (<= (+ |ULTIMATE.start_create_internal_~sll~0#1.base| 1) |#StackHeapBarrier|) (= |ULTIMATE.start_create_internal_~sll~0#1.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_22|) (exists ((|v_ULTIMATE.start_create_internal_#t~nondet6#1_13| Int)) (and (not (= |v_ULTIMATE.start_create_internal_#t~nondet6#1_13| 0)) (<= |v_ULTIMATE.start_create_internal_#t~nondet6#1_13| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_internal_#t~nondet6#1_13| 2147483648))))) (and (exists ((|v_#valid_113| (Array Int Int))) (= (select |v_#valid_113| |ULTIMATE.start_main_~l~0#1.base|) 0)) (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_create_internal_~sll~0#1.base| 0)) (<= (+ |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~l~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#valid_114| (Array Int Int))) (and (= |#valid| (store |v_#valid_114| |ULTIMATE.start_create_internal_#t~ret7#1.base| 1)) (= (select |v_#valid_114| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0))) (exists ((|v_#memory_$Pointer$.offset_99| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_99| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.offset_99| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (exists ((|v_#valid_115| (Array Int Int))) (= (select |v_#valid_115| |ULTIMATE.start_create_internal_~sll~0#1.base|) 0)) (exists ((|v_#length_91| (Array Int Int))) (= (store |v_#length_91| |ULTIMATE.start_create_internal_#t~ret7#1.base| 8) |#length|)) (exists ((|v_#memory_$Pointer$.base_98| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_98| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.base_98| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (not (= |ULTIMATE.start_create_internal_#t~ret7#1.base| 0)) (<= (+ |ULTIMATE.start_create_internal_~sll~0#1.base| 1) |#StackHeapBarrier|) (= |ULTIMATE.start_create_internal_~sll~0#1.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_22|) (exists ((|v_ULTIMATE.start_create_internal_#t~nondet6#1_13| Int)) (and (not (= |v_ULTIMATE.start_create_internal_#t~nondet6#1_13| 0)) (<= |v_ULTIMATE.start_create_internal_#t~nondet6#1_13| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_internal_#t~nondet6#1_13| 2147483648)))))) (not (= (select |#valid| |v_ULTIMATE.start_create_internal_~now~0#1.base_22|) 1)))) (= |ULTIMATE.start_create_internal_~sll~0#1.offset| 0))' at error location [2024-11-14 05:27:38,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:38,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:38,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 10 [2024-11-14 05:27:38,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106637398] [2024-11-14 05:27:38,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:38,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:27:38,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:38,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:27:38,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=621, Unknown=2, NotChecked=50, Total=756 [2024-11-14 05:27:38,834 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:27:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:39,202 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2024-11-14 05:27:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:27:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 22 [2024-11-14 05:27:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:39,203 INFO L225 Difference]: With dead ends: 79 [2024-11-14 05:27:39,204 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 05:27:39,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=96, Invalid=718, Unknown=2, NotChecked=54, Total=870 [2024-11-14 05:27:39,205 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:39,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 198 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 70 Unchecked, 0.2s Time] [2024-11-14 05:27:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 05:27:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-14 05:27:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.6326530612244898) internal successors, (80), 68 states have internal predecessors, (80), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:27:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-11-14 05:27:39,218 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 22 [2024-11-14 05:27:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:39,218 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-11-14 05:27:39,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:27:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-11-14 05:27:39,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:27:39,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:39,219 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:39,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:27:39,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:39,425 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:39,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:39,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2105151833, now seen corresponding path program 1 times [2024-11-14 05:27:39,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:39,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968110806] [2024-11-14 05:27:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:39,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:39,777 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 05:27:39,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968110806] [2024-11-14 05:27:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968110806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618172603] [2024-11-14 05:27:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:39,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:39,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:39,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:27:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:39,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 05:27:39,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:39,901 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 05:27:39,944 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-14 05:27:39,964 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:27:39,964 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 12 treesize of output 14 [2024-11-14 05:27:39,978 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 05:27:39,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:40,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618172603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:40,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1832294536] [2024-11-14 05:27:40,064 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 05:27:40,064 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:40,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:40,064 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:40,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:40,341 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 103 for LOIs [2024-11-14 05:27:40,408 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:27:40,420 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:43,289 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1725#(and (= |ULTIMATE.start_create_internal_#t~ret7#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.base_23| Int)) (and (or (and (exists ((|v_#valid_124| (Array Int Int))) (= (select |v_#valid_124| |ULTIMATE.start_create_internal_~sll~0#1.base|) 0)) (exists ((|v_#valid_125| (Array Int Int))) (and (= (store |v_#valid_125| |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#valid|) (= (select |v_#valid_125| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0))) (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (= |ULTIMATE.start_create_internal_~sll~0#1.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_23|) (not (= |ULTIMATE.start_create_internal_~sll~0#1.base| 0)) (exists ((|v_#valid_123| (Array Int Int))) (= (select |v_#valid_123| |ULTIMATE.start_main_~l~0#1.base|) 0)) (<= (+ |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~l~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_111| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_111| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.offset_111| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (exists ((|v_#memory_$Pointer$.base_110| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_110| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.base_110| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_106| (Array Int Int))) (= |#length| (store |v_#length_106| |ULTIMATE.start_create_internal_#t~ret7#1.base| 8))) (not (= |ULTIMATE.start_create_internal_#t~ret7#1.base| 0)) (<= (+ |ULTIMATE.start_create_internal_~sll~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_create_internal_#t~nondet6#1_14| Int)) (and (not (= |v_ULTIMATE.start_create_internal_#t~nondet6#1_14| 0)) (<= |v_ULTIMATE.start_create_internal_#t~nondet6#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_internal_#t~nondet6#1_14| 2147483648))))) (and (exists ((|v_#valid_124| (Array Int Int))) (= (select |v_#valid_124| |ULTIMATE.start_create_internal_~sll~0#1.base|) 0)) (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (= |ULTIMATE.start_create_internal_~sll~0#1.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_23|) (not (= |ULTIMATE.start_create_internal_~sll~0#1.base| 0)) (exists ((|v_#valid_123| (Array Int Int))) (= (select |v_#valid_123| |ULTIMATE.start_main_~l~0#1.base|) 0)) (<= (+ |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~l~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.offset_112| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_112| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.offset_112| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (exists ((|v_#valid_126| (Array Int Int))) (and (= 0 (select |v_#valid_126| |ULTIMATE.start_create_internal_#t~ret7#1.base|)) (= (store |v_#valid_126| |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#valid|))) (exists ((|v_#length_105| (Array Int Int))) (= |#length| (store |v_#length_105| |ULTIMATE.start_create_internal_#t~ret7#1.base| 8))) (exists ((|v_#memory_$Pointer$.base_110| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_110| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.base_110| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (not (= |ULTIMATE.start_create_internal_#t~ret7#1.base| 0)) (<= (+ |ULTIMATE.start_create_internal_~sll~0#1.base| 1) |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_create_internal_#t~nondet6#1_14| Int)) (and (not (= |v_ULTIMATE.start_create_internal_#t~nondet6#1_14| 0)) (<= |v_ULTIMATE.start_create_internal_#t~nondet6#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_create_internal_#t~nondet6#1_14| 2147483648)))))) (<= (select |#length| |v_ULTIMATE.start_create_internal_~now~0#1.base_23|) 7))) (= |ULTIMATE.start_create_internal_~sll~0#1.offset| 0))' at error location [2024-11-14 05:27:43,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:43,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:27:43,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2024-11-14 05:27:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864906414] [2024-11-14 05:27:43,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:43,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:27:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:27:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=681, Unknown=1, NotChecked=52, Total=812 [2024-11-14 05:27:43,292 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:27:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:43,583 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-11-14 05:27:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:27:43,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2024-11-14 05:27:43,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:43,585 INFO L225 Difference]: With dead ends: 80 [2024-11-14 05:27:43,585 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 05:27:43,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=89, Invalid=784, Unknown=1, NotChecked=56, Total=930 [2024-11-14 05:27:43,586 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:43,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 206 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 70 Unchecked, 0.2s Time] [2024-11-14 05:27:43,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 05:27:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-11-14 05:27:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.6) internal successors, (80), 69 states have internal predecessors, (80), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:27:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-14 05:27:43,600 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 22 [2024-11-14 05:27:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:43,600 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-14 05:27:43,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:27:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-14 05:27:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:27:43,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:43,601 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 05:27:43,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:27:43,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 05:27:43,806 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:43,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1174617253, now seen corresponding path program 1 times [2024-11-14 05:27:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180866460] [2024-11-14 05:27:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:43,915 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 05:27:43,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:43,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180866460] [2024-11-14 05:27:43,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180866460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:43,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:43,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:27:43,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571587977] [2024-11-14 05:27:43,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:43,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:27:43,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:27:43,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:27:43,918 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 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 05:27:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:44,055 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2024-11-14 05:27:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:27:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 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 05:27:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:44,057 INFO L225 Difference]: With dead ends: 80 [2024-11-14 05:27:44,057 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 05:27:44,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:27:44,058 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 24 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:44,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 291 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 05:27:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-11-14 05:27:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.56) internal successors, (78), 69 states have internal predecessors, (78), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:27:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2024-11-14 05:27:44,067 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 21 [2024-11-14 05:27:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:44,067 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2024-11-14 05:27:44,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 1 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 05:27:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2024-11-14 05:27:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:27:44,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:44,072 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] [2024-11-14 05:27:44,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 05:27:44,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:44,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash -854655107, now seen corresponding path program 1 times [2024-11-14 05:27:44,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:44,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719616747] [2024-11-14 05:27:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:44,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:44,903 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 05:27:44,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719616747] [2024-11-14 05:27:44,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719616747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035052027] [2024-11-14 05:27:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:44,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:44,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:44,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:44,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:27:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:45,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 05:27:45,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:45,026 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 5 [2024-11-14 05:27:45,055 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 05:27:45,082 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 05:27:45,093 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 19 treesize of output 18 [2024-11-14 05:27:45,104 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 19 treesize of output 18 [2024-11-14 05:27:45,419 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_alloc_and_zero_internal_~pi~1.base_32 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| v_alloc_and_zero_internal_~pi~1.base_32 (store (select |c_old(#memory_$Pointer$.base)| v_alloc_and_zero_internal_~pi~1.base_32) 0 0))) (= (select |c_old(#valid)| v_alloc_and_zero_internal_~pi~1.base_32) 0) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| v_alloc_and_zero_internal_~pi~1.base_32 (select |c_#memory_$Pointer$.offset| v_alloc_and_zero_internal_~pi~1.base_32))))) is different from true [2024-11-14 05:27:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:27:45,438 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 23 treesize of output 16 [2024-11-14 05:27:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:27:45,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-14 05:27:45,461 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:27:45,461 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 05:27:45,784 INFO L349 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2024-11-14 05:27:45,784 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 3 case distinctions, treesize of input 34 treesize of output 31 [2024-11-14 05:27:45,838 INFO L349 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2024-11-14 05:27:45,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 41 [2024-11-14 05:27:45,975 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 05:27:45,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:46,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035052027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:46,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630121909] [2024-11-14 05:27:46,424 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 05:27:46,424 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:46,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:46,424 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:46,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:46,803 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 54 for LOIs [2024-11-14 05:27:46,823 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:27:46,854 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:51,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2197#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (exists ((|v_ULTIMATE.start_set_~x#1.base_29| Int)) (and (or (not (= |ULTIMATE.start_set_~x#1.offset| 0)) (not (= |v_ULTIMATE.start_set_~x#1.base_29| 0))) (not (= (select |#valid| |v_ULTIMATE.start_set_~x#1.base_29|) 1)))) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (= |ULTIMATE.start_set_~shared#1.offset| 0))' at error location [2024-11-14 05:27:51,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:51,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:27:51,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2024-11-14 05:27:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499358061] [2024-11-14 05:27:51,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:51,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 05:27:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:51,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 05:27:51,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1840, Unknown=2, NotChecked=86, Total=2070 [2024-11-14 05:27:51,395 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 21 states have internal predecessors, (35), 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 05:27:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:57,116 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2024-11-14 05:27:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:27:57,116 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 21 states have internal predecessors, (35), 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 23 [2024-11-14 05:27:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:57,117 INFO L225 Difference]: With dead ends: 81 [2024-11-14 05:27:57,117 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 05:27:57,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=199, Invalid=2663, Unknown=4, NotChecked=104, Total=2970 [2024-11-14 05:27:57,119 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:57,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 536 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 553 Invalid, 0 Unknown, 82 Unchecked, 0.9s Time] [2024-11-14 05:27:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 05:27:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-14 05:27:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 70 states have internal predecessors, (79), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:27:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-14 05:27:57,132 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 23 [2024-11-14 05:27:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:57,133 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-14 05:27:57,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 21 states have internal predecessors, (35), 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 05:27:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-14 05:27:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:57,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:57,138 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:57,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 05:27:57,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 05:27:57,338 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:27:57,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1309355159, now seen corresponding path program 1 times [2024-11-14 05:27:57,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:57,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515824249] [2024-11-14 05:27:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:57,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:27:57,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515824249] [2024-11-14 05:27:57,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515824249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945444439] [2024-11-14 05:27:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:57,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:57,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:57,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:57,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:27:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:57,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:27:57,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:57,880 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 05:27:57,906 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 05:27:57,915 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 17 treesize of output 9 [2024-11-14 05:27:57,938 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base 1))) is different from true [2024-11-14 05:27:57,967 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:27:57,967 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 12 treesize of output 14 [2024-11-14 05:27:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2024-11-14 05:27:57,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:27:58,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945444439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:58,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [881216918] [2024-11-14 05:27:58,219 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:27:58,219 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:58,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:58,220 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:58,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:58,949 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 05:27:58,983 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:00,742 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2546#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_create_#t~ret11#1.offset| 0) (= |ULTIMATE.start_create_~now~1#1.offset| 0) (exists ((|v_ULTIMATE.start_create_~now~1#1.base_31| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~1#1.base_31|) 1))) (= |ULTIMATE.start_create_~sll~1#1.offset| 0))' at error location [2024-11-14 05:28:00,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:00,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:00,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 12 [2024-11-14 05:28:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933958562] [2024-11-14 05:28:00,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:00,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:28:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:28:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=436, Unknown=1, NotChecked=42, Total=552 [2024-11-14 05:28:00,744 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:28:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:01,369 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-14 05:28:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:28:01,369 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2024-11-14 05:28:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:01,370 INFO L225 Difference]: With dead ends: 79 [2024-11-14 05:28:01,370 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 05:28:01,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=87, Invalid=566, Unknown=1, NotChecked=48, Total=702 [2024-11-14 05:28:01,371 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:01,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 314 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 344 Invalid, 0 Unknown, 67 Unchecked, 0.5s Time] [2024-11-14 05:28:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 05:28:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-14 05:28:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 69 states have internal predecessors, (78), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:28:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2024-11-14 05:28:01,378 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 24 [2024-11-14 05:28:01,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:01,378 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2024-11-14 05:28:01,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:28:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2024-11-14 05:28:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:01,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:01,379 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:01,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:28:01,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:01,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:01,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1309355160, now seen corresponding path program 1 times [2024-11-14 05:28:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:01,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281018481] [2024-11-14 05:28:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:28:02,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281018481] [2024-11-14 05:28:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281018481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224070634] [2024-11-14 05:28:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:02,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:02,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:28:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:02,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 05:28:02,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:02,253 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 05:28:02,263 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 05:28:02,402 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 05:28:02,412 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 05:28:02,471 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 26 treesize of output 14 [2024-11-14 05:28:02,569 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 05:28:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:28:02,590 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 05:28:02,607 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:28:02,607 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 05:28:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2024-11-14 05:28:02,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:02,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224070634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:02,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1214303766] [2024-11-14 05:28:02,810 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 05:28:02,810 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:02,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:02,811 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:02,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:03,500 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 05:28:03,526 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:07,676 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2817#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_create_#t~ret11#1.offset| 0) (exists ((|v_ULTIMATE.start_create_~now~1#1.base_36| Int)) (<= (select |#length| |v_ULTIMATE.start_create_~now~1#1.base_36|) 7)) (= |ULTIMATE.start_create_~sll~1#1.offset| 0))' at error location [2024-11-14 05:28:07,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:07,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:28:07,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-14 05:28:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158402794] [2024-11-14 05:28:07,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:07,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 05:28:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 05:28:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=785, Unknown=3, NotChecked=56, Total=930 [2024-11-14 05:28:07,679 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 18 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:28:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:08,444 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-14 05:28:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:28:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 24 [2024-11-14 05:28:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:08,446 INFO L225 Difference]: With dead ends: 77 [2024-11-14 05:28:08,446 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 05:28:08,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=134, Invalid=1199, Unknown=3, NotChecked=70, Total=1406 [2024-11-14 05:28:08,447 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:08,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 428 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 435 Invalid, 0 Unknown, 66 Unchecked, 0.4s Time] [2024-11-14 05:28:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 05:28:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2024-11-14 05:28:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.510204081632653) internal successors, (74), 65 states have internal predecessors, (74), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2024-11-14 05:28:08,454 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 24 [2024-11-14 05:28:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:08,455 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2024-11-14 05:28:08,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:28:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2024-11-14 05:28:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:08,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:08,456 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 05:28:08,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 05:28:08,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:08,661 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:08,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash -724415510, now seen corresponding path program 1 times [2024-11-14 05:28:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:08,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845733151] [2024-11-14 05:28:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:08,762 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 05:28:08,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:08,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845733151] [2024-11-14 05:28:08,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845733151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:08,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464586907] [2024-11-14 05:28:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:08,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:08,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:08,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:08,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:28:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:08,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 05:28:08,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:08,927 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 05:28:08,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:08,953 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 05:28:08,953 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 05:28:08,976 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 05:28:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464586907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:08,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1100673200] [2024-11-14 05:28:08,978 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 05:28:08,979 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:08,979 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:08,979 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:08,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:09,388 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 50 for LOIs [2024-11-14 05:28:09,406 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:28:09,422 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:11,744 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3138#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_destroy_~l#1.offset| 0) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_23| Int)) (and (not (= |v_ULTIMATE.start_destroy_~l#1.base_23| 0)) (not (= (select |#valid| |v_ULTIMATE.start_destroy_~l#1.base_23|) 1)))))' at error location [2024-11-14 05:28:11,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:11,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-14 05:28:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765825174] [2024-11-14 05:28:11,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:11,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:28:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:28:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2024-11-14 05:28:11,746 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:28:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:11,880 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2024-11-14 05:28:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:28:11,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-14 05:28:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:11,882 INFO L225 Difference]: With dead ends: 77 [2024-11-14 05:28:11,882 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 05:28:11,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2024-11-14 05:28:11,883 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:11,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 124 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:28:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 05:28:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-11-14 05:28:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 66 states have internal predecessors, (77), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2024-11-14 05:28:11,888 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 24 [2024-11-14 05:28:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:11,888 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2024-11-14 05:28:11,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:28:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2024-11-14 05:28:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:11,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:11,891 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 05:28:11,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:28:12,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 05:28:12,095 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:12,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -724415509, now seen corresponding path program 1 times [2024-11-14 05:28:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998108975] [2024-11-14 05:28:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:12,399 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 05:28:12,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998108975] [2024-11-14 05:28:12,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998108975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902045537] [2024-11-14 05:28:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:12,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:12,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:12,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:12,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:28:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:12,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 05:28:12,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:12,554 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 05:28:12,563 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 05:28:12,858 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-14 05:28:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:28:12,880 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 05:28:12,896 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:28:12,896 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 05:28:12,951 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 05:28:12,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:28:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902045537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:28:12,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:28:12,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 17 [2024-11-14 05:28:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635375339] [2024-11-14 05:28:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:28:12,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:28:12,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:28:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=231, Unknown=1, NotChecked=30, Total=306 [2024-11-14 05:28:12,953 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 05:28:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:13,403 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2024-11-14 05:28:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:28:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 24 [2024-11-14 05:28:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:13,405 INFO L225 Difference]: With dead ends: 80 [2024-11-14 05:28:13,405 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 05:28:13,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=231, Unknown=1, NotChecked=30, Total=306 [2024-11-14 05:28:13,405 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:13,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 184 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 322 Invalid, 0 Unknown, 123 Unchecked, 0.4s Time] [2024-11-14 05:28:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 05:28:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-11-14 05:28:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.5) internal successors, (81), 69 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2024-11-14 05:28:13,413 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 24 [2024-11-14 05:28:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:13,414 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2024-11-14 05:28:13,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 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 05:28:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2024-11-14 05:28:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 05:28:13,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:13,415 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] [2024-11-14 05:28:13,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:28:13,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:13,621 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:13,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash -981971521, now seen corresponding path program 1 times [2024-11-14 05:28:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813456442] [2024-11-14 05:28:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:13,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:13,743 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 05:28:13,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813456442] [2024-11-14 05:28:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813456442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:28:13,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:28:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:28:13,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986712321] [2024-11-14 05:28:13,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:28:13,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:28:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:13,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:28:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:28:13,745 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 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 05:28:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:13,928 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2024-11-14 05:28:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:28:13,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 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 25 [2024-11-14 05:28:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:13,929 INFO L225 Difference]: With dead ends: 82 [2024-11-14 05:28:13,929 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 05:28:13,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 05:28:13,931 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:13,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 257 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:28:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 05:28:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2024-11-14 05:28:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.462962962962963) internal successors, (79), 69 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2024-11-14 05:28:13,936 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 25 [2024-11-14 05:28:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:13,936 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2024-11-14 05:28:13,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 1 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 05:28:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2024-11-14 05:28:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 05:28:13,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:13,938 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] [2024-11-14 05:28:13,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 05:28:13,939 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:13,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash -378545308, now seen corresponding path program 1 times [2024-11-14 05:28:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81291097] [2024-11-14 05:28:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:13,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:14,107 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 05:28:14,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81291097] [2024-11-14 05:28:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81291097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:28:14,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:28:14,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:28:14,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157835803] [2024-11-14 05:28:14,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:28:14,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:28:14,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:28:14,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:28:14,110 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 1 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 05:28:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:14,385 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-11-14 05:28:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:28:14,386 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), 2 states have call successors, (2), 1 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 26 [2024-11-14 05:28:14,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:14,386 INFO L225 Difference]: With dead ends: 81 [2024-11-14 05:28:14,386 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 05:28:14,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 05:28:14,387 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:14,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 196 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:28:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 05:28:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-14 05:28:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 71 states have internal predecessors, (82), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-14 05:28:14,393 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 26 [2024-11-14 05:28:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:14,394 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-14 05:28:14,395 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), 2 states have call successors, (2), 1 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 05:28:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-14 05:28:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 05:28:14,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:14,396 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 05:28:14,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 05:28:14,397 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:14,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash -274653002, now seen corresponding path program 1 times [2024-11-14 05:28:14,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:14,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245014912] [2024-11-14 05:28:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:14,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:15,146 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 05:28:15,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:15,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245014912] [2024-11-14 05:28:15,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245014912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:15,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110707460] [2024-11-14 05:28:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:15,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:15,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:15,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:15,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:28:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:15,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 05:28:15,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:15,327 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 05:28:15,334 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 05:28:15,702 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:28:15,702 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 13 [2024-11-14 05:28:15,745 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-14 05:28:15,745 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 17 treesize of output 21 [2024-11-14 05:28:15,974 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-14 05:28:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:28:15,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 05:28:16,025 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-14 05:28:16,026 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 16 treesize of output 18 [2024-11-14 05:28:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-14 05:28:16,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:16,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110707460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:16,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538438408] [2024-11-14 05:28:16,424 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 05:28:16,425 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:16,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:16,425 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:16,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:17,343 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 55 for LOIs [2024-11-14 05:28:17,377 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:28:17,392 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:21,357 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4028#(and (<= 1 |#StackHeapBarrier|) (<= (select |#length| |ULTIMATE.start_main_~l~0#1.base|) 15) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (= |ULTIMATE.start_set_~shared#1.base| |ULTIMATE.start_main_~shared~0#1.base|) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (= |ULTIMATE.start_set_~shared#1.offset| 0))' at error location [2024-11-14 05:28:21,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:21,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:28:21,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-14 05:28:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964564411] [2024-11-14 05:28:21,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:21,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 05:28:21,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 05:28:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2265, Unknown=1, NotChecked=96, Total=2550 [2024-11-14 05:28:21,360 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 27 states, 20 states have (on average 2.15) internal successors, (43), 23 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:28:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:22,483 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-11-14 05:28:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:28:22,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 2.15) internal successors, (43), 23 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2024-11-14 05:28:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:22,485 INFO L225 Difference]: With dead ends: 81 [2024-11-14 05:28:22,485 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 05:28:22,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=237, Invalid=2736, Unknown=1, NotChecked=106, Total=3080 [2024-11-14 05:28:22,486 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:22,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 232 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 456 Invalid, 0 Unknown, 61 Unchecked, 0.6s Time] [2024-11-14 05:28:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 05:28:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-14 05:28:22,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 72 states have internal predecessors, (82), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-14 05:28:22,491 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 28 [2024-11-14 05:28:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:22,491 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-14 05:28:22,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 20 states have (on average 2.15) internal successors, (43), 23 states have internal predecessors, (43), 4 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:28:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-14 05:28:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:28:22,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:22,492 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:22,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:28:22,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:22,693 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:22,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1894015509, now seen corresponding path program 1 times [2024-11-14 05:28:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:22,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259231173] [2024-11-14 05:28:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:22,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:28:22,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:22,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259231173] [2024-11-14 05:28:22,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259231173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:22,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487509219] [2024-11-14 05:28:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:22,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:22,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:22,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:28:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:23,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:28:23,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:23,143 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 05:28:23,159 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 05:28:23,166 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 17 treesize of output 9 [2024-11-14 05:28:23,203 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-14 05:28:23,224 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:28:23,225 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 12 treesize of output 14 [2024-11-14 05:28:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-14 05:28:23,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:28:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487509219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [632858461] [2024-11-14 05:28:23,449 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 05:28:23,449 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:23,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:23,450 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:23,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:24,486 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 55 for LOIs [2024-11-14 05:28:24,522 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:28:24,536 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:29,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4409#(and (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.base_41| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_internal_~now~0#1.base_41|) 1))) (= |ULTIMATE.start_create_internal_#t~ret7#1.offset| 0) (<= 1 |#StackHeapBarrier|) (exists ((|v_#memory_$Pointer$.base_237| (Array Int (Array Int Int)))) (= (store |v_#memory_$Pointer$.base_237| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.base_237| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)) |#memory_$Pointer$.base|)) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (<= (+ |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#length_191| (Array Int Int))) (= |#length| (store |v_#length_191| |ULTIMATE.start_create_internal_#t~ret7#1.base| 8))) (exists ((|v_#valid_223| (Array Int Int))) (and (= (select |v_#valid_223| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0) (= |#valid| (store |v_#valid_223| |ULTIMATE.start_create_internal_#t~ret7#1.base| 1)))) (not (= |ULTIMATE.start_create_internal_#t~ret7#1.base| 0)) (exists ((|v_#memory_$Pointer$.offset_235| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_235| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.offset_235| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (= |ULTIMATE.start_create_internal_~sll~0#1.offset| 0))' at error location [2024-11-14 05:28:29,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:29,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:29,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 11 [2024-11-14 05:28:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480738648] [2024-11-14 05:28:29,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:29,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:28:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:28:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=773, Unknown=2, NotChecked=56, Total=930 [2024-11-14 05:28:29,499 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 12 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:28:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:30,082 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-11-14 05:28:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:28:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2024-11-14 05:28:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:30,084 INFO L225 Difference]: With dead ends: 81 [2024-11-14 05:28:30,084 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 05:28:30,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=121, Invalid=1003, Unknown=2, NotChecked=64, Total=1190 [2024-11-14 05:28:30,085 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:30,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 266 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 289 Invalid, 0 Unknown, 64 Unchecked, 0.4s Time] [2024-11-14 05:28:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 05:28:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-11-14 05:28:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 71 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:28:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-14 05:28:30,090 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 30 [2024-11-14 05:28:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:30,091 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-14 05:28:30,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:28:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-14 05:28:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:28:30,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:30,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:30,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:28:30,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:30,296 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:30,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1894015508, now seen corresponding path program 1 times [2024-11-14 05:28:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:30,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461664748] [2024-11-14 05:28:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:30,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:28:30,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461664748] [2024-11-14 05:28:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461664748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74149419] [2024-11-14 05:28:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:30,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:30,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:30,822 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:30,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:28:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:30,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 05:28:30,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:30,999 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 05:28:31,110 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 05:28:31,118 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 05:28:31,166 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 17 treesize of output 9 [2024-11-14 05:28:31,265 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-14 05:28:31,297 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:28:31,297 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 12 treesize of output 14 [2024-11-14 05:28:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2024-11-14 05:28:31,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:28:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74149419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348259547] [2024-11-14 05:28:31,844 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-14 05:28:31,844 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:31,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:31,845 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:31,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:32,646 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 53 for LOIs [2024-11-14 05:28:32,670 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:28:32,680 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:35,939 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4794#(and (= |ULTIMATE.start_create_internal_#t~ret7#1.offset| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (exists ((|v_#memory_$Pointer$.base_268| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_268| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.base_268| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (<= (+ |ULTIMATE.start_create_internal_#t~ret7#1.base| 1) |#StackHeapBarrier|) (exists ((|v_#valid_245| (Array Int Int))) (and (= (select |v_#valid_245| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0) (= |#valid| (store |v_#valid_245| |ULTIMATE.start_create_internal_#t~ret7#1.base| 1)))) (exists ((|v_#memory_$Pointer$.offset_266| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_266| |ULTIMATE.start_create_internal_#t~ret7#1.base| (store (select |v_#memory_$Pointer$.offset_266| |ULTIMATE.start_create_internal_#t~ret7#1.base|) 0 0)))) (exists ((|v_#length_219| (Array Int Int))) (= (store |v_#length_219| |ULTIMATE.start_create_internal_#t~ret7#1.base| 8) |#length|)) (not (= |ULTIMATE.start_create_internal_#t~ret7#1.base| 0)) (= |ULTIMATE.start_create_internal_~sll~0#1.offset| 0))' at error location [2024-11-14 05:28:35,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:35,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:35,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-11-14 05:28:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634355491] [2024-11-14 05:28:35,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:35,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 05:28:35,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 05:28:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1420, Unknown=1, NotChecked=76, Total=1640 [2024-11-14 05:28:35,941 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 23 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 4 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 05:28:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:36,776 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-14 05:28:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:28:36,777 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 4 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) Word has length 30 [2024-11-14 05:28:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:36,777 INFO L225 Difference]: With dead ends: 79 [2024-11-14 05:28:36,777 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 05:28:36,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=215, Invalid=2044, Unknown=1, NotChecked=92, Total=2352 [2024-11-14 05:28:36,779 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:36,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 261 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 247 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2024-11-14 05:28:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 05:28:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-14 05:28:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 65 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:28:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2024-11-14 05:28:36,783 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 30 [2024-11-14 05:28:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:36,783 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2024-11-14 05:28:36,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 4 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 05:28:36,784 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2024-11-14 05:28:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:28:36,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:36,785 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, 1, 1] [2024-11-14 05:28:36,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 05:28:36,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:36,989 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:36,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1340977441, now seen corresponding path program 1 times [2024-11-14 05:28:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:36,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094805300] [2024-11-14 05:28:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:36,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:37,173 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 05:28:37,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:37,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094805300] [2024-11-14 05:28:37,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094805300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:37,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358854337] [2024-11-14 05:28:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:37,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:37,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:37,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:28:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:37,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 05:28:37,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:37,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:28:37,535 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 15 treesize of output 15 [2024-11-14 05:28:37,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:28:37,546 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 15 treesize of output 15 [2024-11-14 05:28:37,606 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 05:28:37,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:37,756 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 05:28:37,756 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 24 treesize of output 23 [2024-11-14 05:28:37,768 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 05:28:37,768 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 20 treesize of output 12 [2024-11-14 05:28:37,934 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 05:28:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358854337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1423655583] [2024-11-14 05:28:37,936 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 05:28:37,937 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:37,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:37,937 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:37,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:38,283 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 52 for LOIs [2024-11-14 05:28:38,301 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:28:38,317 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:28:47,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5168#(and (<= 1 |#StackHeapBarrier|) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_28| Int)) (and (or (= |ULTIMATE.start_destroy_~l#1.offset| 0) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_26| Int) (|v_#valid_262| (Array Int Int))) (and (= |v_ULTIMATE.start_destroy_~l#1.base_28| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_destroy_~l#1.base_26|) 0)) (= |ULTIMATE.start_destroy_~l#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_destroy_~l#1.base_26|) 0)) (<= 8 (select |#length| |v_ULTIMATE.start_destroy_~l#1.base_26|)) (not (= |v_ULTIMATE.start_destroy_~l#1.base_26| 0)) (= (store |v_#valid_262| |v_ULTIMATE.start_destroy_~l#1.base_26| 0) |#valid|) (<= (+ |v_ULTIMATE.start_destroy_~l#1.base_26| 1) |#StackHeapBarrier|) (= (select |v_#valid_262| |v_ULTIMATE.start_destroy_~l#1.base_26|) 1)))) (or (not (= |v_ULTIMATE.start_destroy_~l#1.base_28| 0)) (not (= |ULTIMATE.start_destroy_~l#1.offset| 0))) (not (= (select |#valid| |v_ULTIMATE.start_destroy_~l#1.base_28|) 1)))))' at error location [2024-11-14 05:28:47,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:28:47,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:47,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 19 [2024-11-14 05:28:47,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251752399] [2024-11-14 05:28:47,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:47,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 05:28:47,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:47,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 05:28:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1691, Unknown=3, NotChecked=0, Total=1806 [2024-11-14 05:28:47,987 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:28:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:48,800 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2024-11-14 05:28:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:28:48,805 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-14 05:28:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:48,805 INFO L225 Difference]: With dead ends: 82 [2024-11-14 05:28:48,805 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 05:28:48,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=159, Invalid=2288, Unknown=3, NotChecked=0, Total=2450 [2024-11-14 05:28:48,808 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 28 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:48,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 506 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:28:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 05:28:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-14 05:28:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.4) internal successors, (84), 72 states have internal predecessors, (84), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:28:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-14 05:28:48,814 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 29 [2024-11-14 05:28:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:48,815 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-14 05:28:48,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:28:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-14 05:28:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 05:28:48,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:48,816 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:48,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 05:28:49,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 05:28:49,017 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:28:49,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -274791094, now seen corresponding path program 1 times [2024-11-14 05:28:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:49,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958389737] [2024-11-14 05:28:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:50,631 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 05:28:50,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:50,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958389737] [2024-11-14 05:28:50,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958389737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:50,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960212834] [2024-11-14 05:28:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:50,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:50,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:50,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:50,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 05:28:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:50,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-14 05:28:50,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:50,788 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 05:28:50,833 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 05:28:50,841 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 05:28:50,857 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 19 treesize of output 18 [2024-11-14 05:28:50,869 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 19 treesize of output 18 [2024-11-14 05:28:51,379 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:28:51,380 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 23 treesize of output 20 [2024-11-14 05:28:51,412 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:28:51,412 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 23 treesize of output 20 [2024-11-14 05:28:51,451 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 05:28:51,451 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 05:28:51,782 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_alloc_and_zero_internal_~pi~1.base_88 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| v_alloc_and_zero_internal_~pi~1.base_88 (select |c_#memory_$Pointer$.offset| v_alloc_and_zero_internal_~pi~1.base_88)) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| v_alloc_and_zero_internal_~pi~1.base_88) 0) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| v_alloc_and_zero_internal_~pi~1.base_88 (select |c_#memory_$Pointer$.base| v_alloc_and_zero_internal_~pi~1.base_88))))) is different from true [2024-11-14 05:28:51,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:28:51,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-14 05:28:51,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:28:51,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-14 05:28:51,834 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:28:51,834 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 05:28:51,935 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 23 treesize of output 16 [2024-11-14 05:28:51,944 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 23 treesize of output 16 [2024-11-14 05:28:52,200 INFO L349 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2024-11-14 05:28:52,201 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 3 case distinctions, treesize of input 34 treesize of output 31 [2024-11-14 05:28:52,251 INFO L349 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2024-11-14 05:28:52,251 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 2 case distinctions, treesize of input 34 treesize of output 31 [2024-11-14 05:28:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-14 05:28:52,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960212834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [221695280] [2024-11-14 05:28:53,128 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:28:53,128 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:28:53,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:28:53,129 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:28:53,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:53,969 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 53 for LOIs [2024-11-14 05:28:53,996 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:28:54,006 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:00,829 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5530#(and (exists ((|v_ULTIMATE.start_set_~x#1.base_52| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_set_~x#1.base_52|) 1)) (or (not (= |ULTIMATE.start_set_~x#1.offset| 0)) (not (= |v_ULTIMATE.start_set_~x#1.base_52| 0))))) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (= |ULTIMATE.start_set_~shared#1.offset| 0))' at error location [2024-11-14 05:29:00,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:00,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:29:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 35 [2024-11-14 05:29:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530530070] [2024-11-14 05:29:00,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:00,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:29:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:29:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3330, Unknown=6, NotChecked=116, Total=3660 [2024-11-14 05:29:00,832 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 35 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:29:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:02,789 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2024-11-14 05:29:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 05:29:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2024-11-14 05:29:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:02,791 INFO L225 Difference]: With dead ends: 93 [2024-11-14 05:29:02,791 INFO L226 Difference]: Without dead ends: 93 [2024-11-14 05:29:02,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=306, Invalid=4804, Unknown=6, NotChecked=140, Total=5256 [2024-11-14 05:29:02,793 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 33 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:02,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 530 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 684 Invalid, 0 Unknown, 84 Unchecked, 0.9s Time] [2024-11-14 05:29:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-14 05:29:02,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-11-14 05:29:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 81 states have internal predecessors, (94), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:29:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2024-11-14 05:29:02,797 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 31 [2024-11-14 05:29:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:02,797 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2024-11-14 05:29:02,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:29:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2024-11-14 05:29:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:29:02,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:02,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:02,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 05:29:02,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:02,998 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:02,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1379299480, now seen corresponding path program 1 times [2024-11-14 05:29:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788683108] [2024-11-14 05:29:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:03,481 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 05:29:03,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788683108] [2024-11-14 05:29:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788683108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945897173] [2024-11-14 05:29:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:03,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:03,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:03,485 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:03,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:29:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:03,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 05:29:03,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:03,654 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 05:29:03,758 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-14 05:29:03,758 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 17 treesize of output 21 [2024-11-14 05:29:03,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 19 treesize of output 12 [2024-11-14 05:29:03,985 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 05:29:03,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:04,446 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 05:29:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945897173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1419934885] [2024-11-14 05:29:04,448 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-14 05:29:04,449 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:04,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:04,449 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:04,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:04,788 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 52 for LOIs [2024-11-14 05:29:04,803 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:29:04,814 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:08,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5963#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_destroy_internal_~l#1.offset| 0) (exists ((|v_ULTIMATE.start_destroy_internal_~l#1.base_23| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_destroy_internal_~l#1.base_23|) 1)) (not (= |v_ULTIMATE.start_destroy_internal_~l#1.base_23| 0)))))' at error location [2024-11-14 05:29:08,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:08,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:29:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-14 05:29:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347799299] [2024-11-14 05:29:08,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:08,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 05:29:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 05:29:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2903, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 05:29:08,617 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 30 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 24 states have internal predecessors, (52), 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 05:29:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:09,583 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2024-11-14 05:29:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 05:29:09,583 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 24 states have internal predecessors, (52), 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 30 [2024-11-14 05:29:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:09,588 INFO L225 Difference]: With dead ends: 123 [2024-11-14 05:29:09,588 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 05:29:09,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=206, Invalid=3454, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 05:29:09,591 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:09,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 305 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:29:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 05:29:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2024-11-14 05:29:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.36986301369863) internal successors, (100), 84 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:29:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2024-11-14 05:29:09,595 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 30 [2024-11-14 05:29:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:09,596 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2024-11-14 05:29:09,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 24 states have internal predecessors, (52), 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 05:29:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2024-11-14 05:29:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:29:09,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:09,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:09,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 05:29:09,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:09,798 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:09,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:09,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1379299479, now seen corresponding path program 1 times [2024-11-14 05:29:09,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:09,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336265487] [2024-11-14 05:29:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:29:10,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336265487] [2024-11-14 05:29:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336265487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:29:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390063713] [2024-11-14 05:29:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:10,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:29:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:10,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:29:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:10,054 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 05:29:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:10,346 INFO L93 Difference]: Finished difference Result 133 states and 165 transitions. [2024-11-14 05:29:10,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:29:10,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 30 [2024-11-14 05:29:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:10,349 INFO L225 Difference]: With dead ends: 133 [2024-11-14 05:29:10,349 INFO L226 Difference]: Without dead ends: 133 [2024-11-14 05:29:10,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 05:29:10,350 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 9 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:10,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 198 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:29:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-14 05:29:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2024-11-14 05:29:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.438095238095238) internal successors, (151), 116 states have internal predecessors, (151), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:29:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2024-11-14 05:29:10,359 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 30 [2024-11-14 05:29:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:10,360 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2024-11-14 05:29:10,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 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 05:29:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2024-11-14 05:29:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:29:10,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:10,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:10,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-14 05:29:10,361 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:10,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1379297947, now seen corresponding path program 1 times [2024-11-14 05:29:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667107126] [2024-11-14 05:29:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:10,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:29:10,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667107126] [2024-11-14 05:29:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667107126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:10,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:29:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793512382] [2024-11-14 05:29:10,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:10,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:29:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:29:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:10,489 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 05:29:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:10,666 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2024-11-14 05:29:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:29:10,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 30 [2024-11-14 05:29:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:10,668 INFO L225 Difference]: With dead ends: 131 [2024-11-14 05:29:10,668 INFO L226 Difference]: Without dead ends: 131 [2024-11-14 05:29:10,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 05:29:10,669 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:10,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 237 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:29:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-14 05:29:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-11-14 05:29:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 106 states have (on average 1.4056603773584906) internal successors, (149), 117 states have internal predecessors, (149), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:29:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2024-11-14 05:29:10,681 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 30 [2024-11-14 05:29:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:10,681 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2024-11-14 05:29:10,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 05:29:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2024-11-14 05:29:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:29:10,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:10,682 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, 1, 1, 1, 1] [2024-11-14 05:29:10,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-14 05:29:10,682 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:10,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash 71499710, now seen corresponding path program 1 times [2024-11-14 05:29:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054484602] [2024-11-14 05:29:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:29:10,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054484602] [2024-11-14 05:29:10,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054484602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046868199] [2024-11-14 05:29:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:10,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:10,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:10,977 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:10,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:29:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:11,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:29:11,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:29:11,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:11,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:29:11,477 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 05:29:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:29:11,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046868199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:29:11,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [248223294] [2024-11-14 05:29:11,677 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 05:29:11,677 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:11,677 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:11,678 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:11,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:12,507 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 53 for LOIs [2024-11-14 05:29:12,527 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:29:12,537 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:15,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6955#(and (<= 1 |#StackHeapBarrier|) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (exists ((|v_ULTIMATE.start_destroy_~l#1.base_35| Int)) (and (<= (select |#length| |v_ULTIMATE.start_destroy_~l#1.base_35|) 7) (not (= |v_ULTIMATE.start_destroy_~l#1.base_35| 0)))))' at error location [2024-11-14 05:29:15,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:15,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:29:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-14 05:29:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639156337] [2024-11-14 05:29:15,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:15,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 05:29:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 05:29:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 05:29:15,991 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 20 states have internal predecessors, (50), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:29:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:16,323 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2024-11-14 05:29:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:29:16,324 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 20 states have internal predecessors, (50), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2024-11-14 05:29:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:16,325 INFO L225 Difference]: With dead ends: 126 [2024-11-14 05:29:16,325 INFO L226 Difference]: Without dead ends: 126 [2024-11-14 05:29:16,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 05:29:16,326 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 29 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:16,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 404 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:29:16,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-14 05:29:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2024-11-14 05:29:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 114 states have internal predecessors, (138), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:29:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2024-11-14 05:29:16,332 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 32 [2024-11-14 05:29:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:16,332 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2024-11-14 05:29:16,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 20 states have internal predecessors, (50), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:29:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2024-11-14 05:29:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:29:16,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:16,333 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:16,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 05:29:16,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:16,534 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:16,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -568221032, now seen corresponding path program 1 times [2024-11-14 05:29:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:16,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330580080] [2024-11-14 05:29:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:17,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330580080] [2024-11-14 05:29:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330580080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436913858] [2024-11-14 05:29:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:17,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:17,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:17,392 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:17,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 05:29:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:17,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-14 05:29:17,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:17,742 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 05:29:17,805 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 05:29:17,987 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_alloc_and_zero_internal_~pi~1.base_113 Int)) (and (= |c_#valid| (store |c_old(#valid)| v_alloc_and_zero_internal_~pi~1.base_113 1)) (= (select |c_old(#valid)| v_alloc_and_zero_internal_~pi~1.base_113) 0) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| v_alloc_and_zero_internal_~pi~1.base_113 (select |c_#memory_$Pointer$.base| v_alloc_and_zero_internal_~pi~1.base_113))))) is different from true [2024-11-14 05:29:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:29:17,998 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 05:29:18,040 INFO L349 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2024-11-14 05:29:18,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2024-11-14 05:29:18,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2024-11-14 05:29:18,296 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 25 treesize of output 13 [2024-11-14 05:29:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:18,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436913858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1032682009] [2024-11-14 05:29:18,622 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:29:18,622 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:18,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:18,622 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:18,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:25,537 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 63 for LOIs [2024-11-14 05:29:25,563 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 05:29:25,577 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:33,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7384#(and (exists ((|v_ULTIMATE.start_set_~x#1.base_70| Int)) (and (or (not (= |v_ULTIMATE.start_set_~x#1.base_70| 0)) (not (= |ULTIMATE.start_set_~x#1.offset| 0))) (not (= (select |#valid| |v_ULTIMATE.start_set_~x#1.base_70|) 1)))) (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (= |ULTIMATE.start_set_~shared#1.offset| 0))' at error location [2024-11-14 05:29:33,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:33,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:29:33,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 29 [2024-11-14 05:29:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989494404] [2024-11-14 05:29:33,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:33,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 05:29:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 05:29:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2382, Unknown=3, NotChecked=98, Total=2652 [2024-11-14 05:29:33,260 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand has 30 states, 22 states have (on average 2.272727272727273) internal successors, (50), 25 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:29:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:35,275 INFO L93 Difference]: Finished difference Result 143 states and 179 transitions. [2024-11-14 05:29:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:29:35,275 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 22 states have (on average 2.272727272727273) internal successors, (50), 25 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 32 [2024-11-14 05:29:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:35,276 INFO L225 Difference]: With dead ends: 143 [2024-11-14 05:29:35,276 INFO L226 Difference]: Without dead ends: 143 [2024-11-14 05:29:35,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=217, Invalid=2976, Unknown=3, NotChecked=110, Total=3306 [2024-11-14 05:29:35,278 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 16 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:35,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 647 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 742 Invalid, 0 Unknown, 88 Unchecked, 1.3s Time] [2024-11-14 05:29:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-14 05:29:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-11-14 05:29:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 128 states have internal predecessors, (156), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:29:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2024-11-14 05:29:35,284 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 32 [2024-11-14 05:29:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:35,284 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2024-11-14 05:29:35,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 22 states have (on average 2.272727272727273) internal successors, (50), 25 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:29:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2024-11-14 05:29:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:29:35,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:35,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:35,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 05:29:35,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 05:29:35,490 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:35,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -568221031, now seen corresponding path program 1 times [2024-11-14 05:29:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284902498] [2024-11-14 05:29:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:36,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284902498] [2024-11-14 05:29:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284902498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656712175] [2024-11-14 05:29:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:36,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:29:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:29:36,839 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:29:36,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 05:29:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:36,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-14 05:29:36,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:29:37,277 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 05:29:37,286 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 05:29:37,573 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 05:29:37,583 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 11 treesize of output 7 [2024-11-14 05:29:37,924 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_alloc_and_zero_internal_~pi~1.base_122 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| v_alloc_and_zero_internal_~pi~1.base_122 (select |c_#memory_$Pointer$.offset| v_alloc_and_zero_internal_~pi~1.base_122))) (= (store |c_old(#memory_$Pointer$.base)| v_alloc_and_zero_internal_~pi~1.base_122 (select |c_#memory_$Pointer$.base| v_alloc_and_zero_internal_~pi~1.base_122)) |c_#memory_$Pointer$.base|) (= (store |c_old(#length)| v_alloc_and_zero_internal_~pi~1.base_122 (select |c_#length| v_alloc_and_zero_internal_~pi~1.base_122)) |c_#length|) (= (select |c_old(#valid)| v_alloc_and_zero_internal_~pi~1.base_122) 0))) is different from true [2024-11-14 05:29:37,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:29:37,949 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 27 treesize of output 20 [2024-11-14 05:29:38,020 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-11-14 05:29:38,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2024-11-14 05:29:38,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 05:29:38,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 05:29:38,332 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 29 treesize of output 13 [2024-11-14 05:29:38,345 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 27 treesize of output 11 [2024-11-14 05:29:38,356 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 17 treesize of output 9 [2024-11-14 05:29:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:29:38,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:29:39,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656712175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:29:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1442170751] [2024-11-14 05:29:39,197 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:29:39,197 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:29:39,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:29:39,197 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:29:39,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:29:47,620 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 63 for LOIs [2024-11-14 05:29:47,642 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 05:29:47,657 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:29:53,856 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7857#(and (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (exists ((|v_ULTIMATE.start_set_~x#1.base_76| Int) (|v_ULTIMATE.start_set_~x#1.offset_70| Int)) (and (or (not (= |v_ULTIMATE.start_set_~x#1.base_76| 0)) (not (= |v_ULTIMATE.start_set_~x#1.offset_70| 0))) (or (< (+ 8 |v_ULTIMATE.start_set_~x#1.offset_70|) 0) (< (select |#length| |v_ULTIMATE.start_set_~x#1.base_76|) (+ 16 |v_ULTIMATE.start_set_~x#1.offset_70|))))) (= |ULTIMATE.start_set_~shared#1.offset| 0))' at error location [2024-11-14 05:29:53,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:29:53,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:29:53,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2024-11-14 05:29:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552639096] [2024-11-14 05:29:53,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:29:53,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 05:29:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 05:29:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2767, Unknown=2, NotChecked=106, Total=3080 [2024-11-14 05:29:53,858 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 33 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 28 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:29:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:29:58,915 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2024-11-14 05:29:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:29:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 28 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 32 [2024-11-14 05:29:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:29:58,916 INFO L225 Difference]: With dead ends: 142 [2024-11-14 05:29:58,917 INFO L226 Difference]: Without dead ends: 142 [2024-11-14 05:29:58,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=265, Invalid=3642, Unknown=3, NotChecked=122, Total=4032 [2024-11-14 05:29:58,918 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 11 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:29:58,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 656 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 719 Invalid, 0 Unknown, 85 Unchecked, 1.8s Time] [2024-11-14 05:29:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-14 05:29:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2024-11-14 05:29:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 118 states have (on average 1.3220338983050848) internal successors, (156), 129 states have internal predecessors, (156), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:29:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2024-11-14 05:29:58,925 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 32 [2024-11-14 05:29:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:29:58,925 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2024-11-14 05:29:58,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 28 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:29:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2024-11-14 05:29:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:29:58,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:29:58,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:29:58,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 05:29:59,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 05:29:59,127 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:29:59,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:29:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1638133518, now seen corresponding path program 1 times [2024-11-14 05:29:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:29:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566181327] [2024-11-14 05:29:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:29:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:29:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:29:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:29:59,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:29:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566181327] [2024-11-14 05:29:59,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566181327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:29:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:29:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:29:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850305510] [2024-11-14 05:29:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:29:59,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:29:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:29:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:29:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:29:59,509 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 05:30:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:00,033 INFO L93 Difference]: Finished difference Result 144 states and 178 transitions. [2024-11-14 05:30:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:30:00,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 32 [2024-11-14 05:30:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:00,035 INFO L225 Difference]: With dead ends: 144 [2024-11-14 05:30:00,035 INFO L226 Difference]: Without dead ends: 144 [2024-11-14 05:30:00,035 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 05:30:00,036 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:00,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 198 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:30:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-14 05:30:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2024-11-14 05:30:00,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 121 states have (on average 1.3388429752066116) internal successors, (162), 132 states have internal predecessors, (162), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:30:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 178 transitions. [2024-11-14 05:30:00,042 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 178 transitions. Word has length 32 [2024-11-14 05:30:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:00,042 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 178 transitions. [2024-11-14 05:30:00,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 05:30:00,042 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 178 transitions. [2024-11-14 05:30:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:30:00,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:00,043 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:30:00,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-14 05:30:00,044 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:30:00,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1406528377, now seen corresponding path program 2 times [2024-11-14 05:30:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:00,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961643358] [2024-11-14 05:30:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:02,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961643358] [2024-11-14 05:30:02,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961643358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:02,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010847404] [2024-11-14 05:30:02,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:30:02,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:02,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:02,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 05:30:02,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:30:02,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:30:02,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-14 05:30:02,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:02,641 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 05:30:03,169 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 05:30:03,188 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 05:30:03,301 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 19 treesize of output 18 [2024-11-14 05:30:03,325 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 19 treesize of output 18 [2024-11-14 05:30:03,474 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:30:03,474 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 05:30:03,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2024-11-14 05:30:03,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2024-11-14 05:30:04,199 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 05:30:04,355 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_alloc_and_zero_internal_~pi~1.base_131 Int)) (and (<= (select |c_#length| v_alloc_and_zero_internal_~pi~1.base_131) 8) (= (select |c_old(#valid)| v_alloc_and_zero_internal_~pi~1.base_131) 0) (= (store |c_old(#memory_$Pointer$.base)| v_alloc_and_zero_internal_~pi~1.base_131 (select |c_#memory_$Pointer$.base| v_alloc_and_zero_internal_~pi~1.base_131)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| v_alloc_and_zero_internal_~pi~1.base_131 (select |c_#memory_$Pointer$.offset| v_alloc_and_zero_internal_~pi~1.base_131))))) is different from true [2024-11-14 05:30:04,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:30:04,415 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-14 05:30:04,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2024-11-14 05:30:04,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:30:04,463 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-14 05:30:04,463 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 56 treesize of output 49 [2024-11-14 05:30:04,490 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:30:04,490 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 05:30:05,306 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2024-11-14 05:30:05,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 96 [2024-11-14 05:30:05,397 INFO L349 Elim1Store]: treesize reduction 92, result has 23.3 percent of original size [2024-11-14 05:30:05,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 71 [2024-11-14 05:30:06,408 INFO L349 Elim1Store]: treesize reduction 131, result has 19.1 percent of original size [2024-11-14 05:30:06,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 147 treesize of output 155 [2024-11-14 05:30:06,441 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-14 05:30:06,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 147 treesize of output 112 [2024-11-14 05:30:06,517 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-14 05:30:06,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 135 [2024-11-14 05:30:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:30:06,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:08,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:08,196 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 221 treesize of output 226 [2024-11-14 05:30:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010847404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2145765786] [2024-11-14 05:30:09,329 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:30:09,329 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:09,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:09,329 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:09,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:14,576 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 83 for LOIs [2024-11-14 05:30:14,610 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 1 for LOIs [2024-11-14 05:30:14,621 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:30:35,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8653#(and (= 0 |ULTIMATE.start_main_~shared~0#1.offset|) (= |ULTIMATE.start_set_~shared#1.offset| 0) (exists ((|v_ULTIMATE.start_set_~x#1.base_84| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_set_~x#1.base_84|) 1)) (or (not (= |ULTIMATE.start_set_~x#1.offset| 0)) (not (= |v_ULTIMATE.start_set_~x#1.base_84| 0))))))' at error location [2024-11-14 05:30:35,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:30:35,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:30:35,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2024-11-14 05:30:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317608964] [2024-11-14 05:30:35,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:30:35,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-14 05:30:35,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:30:35,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-14 05:30:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3598, Unknown=6, NotChecked=120, Total=3906 [2024-11-14 05:30:35,812 INFO L87 Difference]: Start difference. First operand 143 states and 178 transitions. Second operand has 38 states, 30 states have (on average 1.8) internal successors, (54), 32 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:30:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:30:42,902 INFO L93 Difference]: Finished difference Result 146 states and 183 transitions. [2024-11-14 05:30:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 05:30:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 1.8) internal successors, (54), 32 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2024-11-14 05:30:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:30:42,904 INFO L225 Difference]: With dead ends: 146 [2024-11-14 05:30:42,905 INFO L226 Difference]: Without dead ends: 146 [2024-11-14 05:30:42,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=251, Invalid=5001, Unknown=8, NotChecked=142, Total=5402 [2024-11-14 05:30:42,906 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:30:42,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1003 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1240 Invalid, 0 Unknown, 86 Unchecked, 2.8s Time] [2024-11-14 05:30:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-14 05:30:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-11-14 05:30:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 133 states have internal predecessors, (163), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:30:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 179 transitions. [2024-11-14 05:30:42,913 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 179 transitions. Word has length 35 [2024-11-14 05:30:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:30:42,913 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 179 transitions. [2024-11-14 05:30:42,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 1.8) internal successors, (54), 32 states have internal predecessors, (54), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-14 05:30:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 179 transitions. [2024-11-14 05:30:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:30:42,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:30:42,914 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:30:42,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 05:30:43,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:43,114 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:30:43,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:30:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2077599091, now seen corresponding path program 1 times [2024-11-14 05:30:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:30:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80330632] [2024-11-14 05:30:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:30:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:30:44,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:30:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80330632] [2024-11-14 05:30:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80330632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:30:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759092017] [2024-11-14 05:30:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:30:44,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:30:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:30:44,280 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:30:44,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 05:30:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:30:44,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-14 05:30:44,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:30:44,474 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 05:30:44,650 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 05:30:44,669 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 05:30:44,798 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 05:30:44,799 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 05:30:45,154 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 16 treesize of output 11 [2024-11-14 05:30:45,166 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 16 treesize of output 11 [2024-11-14 05:30:45,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:45,545 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 15 treesize of output 15 [2024-11-14 05:30:45,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:45,574 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 15 treesize of output 15 [2024-11-14 05:30:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:30:45,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:30:46,142 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1403 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1403) |c_ULTIMATE.start_create_internal_~sll~0#1.base|) 0) 0)) (forall ((v_ArrVal_1404 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1404) |c_ULTIMATE.start_create_internal_~sll~0#1.base|) 0) 0))) is different from false [2024-11-14 05:30:46,178 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1404 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1404) |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) 0) 0)) (forall ((v_ArrVal_1403 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1403) |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) 0) 0))) is different from false [2024-11-14 05:30:46,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:46,295 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 37 treesize of output 38 [2024-11-14 05:30:46,304 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 50 treesize of output 42 [2024-11-14 05:30:46,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:46,317 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 29 treesize of output 30 [2024-11-14 05:30:46,324 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 34 [2024-11-14 05:30:46,332 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 21 treesize of output 19 [2024-11-14 05:30:46,339 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 19 treesize of output 17 [2024-11-14 05:30:47,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:47,291 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 18 treesize of output 19 [2024-11-14 05:30:47,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:47,311 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 30 [2024-11-14 05:30:47,318 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 9 treesize of output 7 [2024-11-14 05:30:47,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:30:47,357 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 18 treesize of output 19 [2024-11-14 05:30:47,362 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 05:30:47,380 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-14 05:30:47,381 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 16 treesize of output 11 [2024-11-14 05:30:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:30:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759092017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:30:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419224673] [2024-11-14 05:30:48,248 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 05:30:48,248 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:30:48,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:30:48,249 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:30:48,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:30:50,695 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 50 for LOIs [2024-11-14 05:30:50,714 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:30:50,729 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:24,901 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9227#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_destroy_internal_~l#1.base_29| Int)) (not (= 1 (select |#valid| |v_ULTIMATE.start_destroy_internal_~l#1.base_29|)))))' at error location [2024-11-14 05:31:24,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:24,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:31:24,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 18] total 38 [2024-11-14 05:31:24,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257179103] [2024-11-14 05:31:24,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:24,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-14 05:31:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-14 05:31:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=3783, Unknown=36, NotChecked=250, Total=4290 [2024-11-14 05:31:24,903 INFO L87 Difference]: Start difference. First operand 144 states and 179 transitions. Second operand has 38 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:31:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:28,450 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2024-11-14 05:31:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 05:31:28,451 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2024-11-14 05:31:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:28,451 INFO L225 Difference]: With dead ends: 157 [2024-11-14 05:31:28,452 INFO L226 Difference]: Without dead ends: 157 [2024-11-14 05:31:28,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=311, Invalid=5511, Unknown=38, NotChecked=302, Total=6162 [2024-11-14 05:31:28,453 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:28,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 683 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 929 Invalid, 0 Unknown, 141 Unchecked, 1.9s Time] [2024-11-14 05:31:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-14 05:31:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2024-11-14 05:31:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 139 states have internal predecessors, (169), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:31:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 185 transitions. [2024-11-14 05:31:28,460 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 185 transitions. Word has length 35 [2024-11-14 05:31:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:28,460 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 185 transitions. [2024-11-14 05:31:28,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:31:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 185 transitions. [2024-11-14 05:31:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:31:28,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:28,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:31:28,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 05:31:28,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-14 05:31:28,661 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:31:28,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:28,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2077597558, now seen corresponding path program 1 times [2024-11-14 05:31:28,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:28,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247071226] [2024-11-14 05:31:28,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:28,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:31:29,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247071226] [2024-11-14 05:31:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247071226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668342737] [2024-11-14 05:31:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:29,875 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:29,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 05:31:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:30,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-14 05:31:30,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:30,750 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:31:30,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 29 [2024-11-14 05:31:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:31:31,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:31:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668342737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:32,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1739908982] [2024-11-14 05:31:32,343 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2024-11-14 05:31:32,343 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:31:32,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:31:32,344 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:31:32,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:31:32,781 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero_internal with input of size 54 for LOIs [2024-11-14 05:31:32,810 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 19 for LOIs [2024-11-14 05:31:32,824 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:31:40,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9795#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_old_#valid#1_10| (Array Int Int))) (not (= |v_ULTIMATE.start_main_old_#valid#1_10| |#valid|))) (= |ULTIMATE.start_main_#res#1| 0))' at error location [2024-11-14 05:31:40,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:31:40,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 05:31:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 28 [2024-11-14 05:31:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539821963] [2024-11-14 05:31:40,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 05:31:40,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 05:31:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:31:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 05:31:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=4077, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 05:31:40,722 INFO L87 Difference]: Start difference. First operand 150 states and 185 transitions. Second operand has 30 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:31:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:31:42,427 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2024-11-14 05:31:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:31:42,428 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2024-11-14 05:31:42,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:31:42,429 INFO L225 Difference]: With dead ends: 163 [2024-11-14 05:31:42,429 INFO L226 Difference]: Without dead ends: 145 [2024-11-14 05:31:42,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=213, Invalid=4077, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 05:31:42,430 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:31:42,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 376 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:31:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-14 05:31:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-14 05:31:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 134 states have internal predecessors, (163), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 05:31:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 179 transitions. [2024-11-14 05:31:42,446 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 179 transitions. Word has length 35 [2024-11-14 05:31:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:31:42,447 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 179 transitions. [2024-11-14 05:31:42,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:31:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 179 transitions. [2024-11-14 05:31:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:31:42,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:31:42,448 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 05:31:42,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 05:31:42,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-14 05:31:42,655 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:31:42,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:31:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1826165225, now seen corresponding path program 2 times [2024-11-14 05:31:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:31:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012106454] [2024-11-14 05:31:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:31:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:31:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:31:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:31:45,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:31:45,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012106454] [2024-11-14 05:31:45,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012106454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:31:45,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045460571] [2024-11-14 05:31:45,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:31:45,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:31:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:31:45,868 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:31:45,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:31:46,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:31:46,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:31:46,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-14 05:31:46,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:31:46,089 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 05:31:46,097 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 05:31:46,210 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 19 treesize of output 18 [2024-11-14 05:31:46,227 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 19 treesize of output 18 [2024-11-14 05:31:46,853 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 05:31:49,011 WARN L851 $PredicateComparison]: unable to prove that (and (or (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse0 8) 0) (= (select .cse0 0) 0))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_#memory_$Pointer$.offset|)) (.cse2 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= .cse1 |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) (= (select .cse2 0) 0) (= (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse1 (select |c_#memory_$Pointer$.offset| .cse1)) |c_#memory_$Pointer$.offset|) (= (select .cse2 8) 0))))) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_#t~ret5#1.base|)) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (or (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse3 0) 0) (= (select .cse3 8) 0))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse5 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_#memory_$Pointer$.base|)) (.cse4 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse4 8) 0) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse5 (select |c_#memory_$Pointer$.base| .cse5))) (= .cse5 |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) (= (select .cse4 0) 0)))))) is different from false [2024-11-14 05:31:49,017 WARN L873 $PredicateComparison]: unable to prove that (and (or (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse0 8) 0) (= (select .cse0 0) 0))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_#memory_$Pointer$.offset|)) (.cse2 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= .cse1 |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) (= (select .cse2 0) 0) (= (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse1 (select |c_#memory_$Pointer$.offset| .cse1)) |c_#memory_$Pointer$.offset|) (= (select .cse2 8) 0))))) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_#t~ret5#1.base|)) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (or (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse3 0) 0) (= (select .cse3 8) 0))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse5 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_#memory_$Pointer$.base|)) (.cse4 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse4 8) 0) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse5 (select |c_#memory_$Pointer$.base| .cse5))) (= .cse5 |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) (= (select .cse4 0) 0)))))) is different from true [2024-11-14 05:31:51,115 WARN L851 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_~now~0#1.base|)) (or (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse0 0) 0) (= (select .cse0 8) 0))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_#memory_$Pointer$.base|)) (.cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= .cse1 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse2 8) 0) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse1 (select |c_#memory_$Pointer$.base| .cse1))) (= (select .cse2 0) 0))))) (or (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int)))) (let ((.cse4 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_#memory_$Pointer$.offset|)) (.cse3 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse3 0) 0) (= .cse4 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse4 (select |c_#memory_$Pointer$.offset| .cse4)) |c_#memory_$Pointer$.offset|) (= (select .cse3 8) 0)))) (let ((.cse5 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse5 8) 0) (= (select .cse5 0) 0))))) is different from false [2024-11-14 05:31:51,120 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_~now~0#1.base|)) (or (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse0 0) 0) (= (select .cse0 8) 0))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_#memory_$Pointer$.base|)) (.cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= .cse1 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse2 8) 0) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse1 (select |c_#memory_$Pointer$.base| .cse1))) (= (select .cse2 0) 0))))) (or (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int)))) (let ((.cse4 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_#memory_$Pointer$.offset|)) (.cse3 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse3 0) 0) (= .cse4 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse4 (select |c_#memory_$Pointer$.offset| .cse4)) |c_#memory_$Pointer$.offset|) (= (select .cse3 8) 0)))) (let ((.cse5 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse5 8) 0) (= (select .cse5 0) 0))))) is different from true [2024-11-14 05:31:53,292 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 5 treesize of output 3 [2024-11-14 05:31:55,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:31:55,332 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 05:31:55,580 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:31:55,580 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 23 treesize of output 20 [2024-11-14 05:31:55,668 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:31:55,668 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 12 treesize of output 14 [2024-11-14 05:31:55,738 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:31:55,738 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 23 treesize of output 20 [2024-11-14 05:31:57,800 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_create_internal_#t~ret7#1.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select |c_#length| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|) 8) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_~now~0#1.base|)) (or (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse0 0) 0) (= (select .cse0 8) 0))) .cse1 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int)))) (and (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| |c_ULTIMATE.start_create_internal_#t~ret7#1.base| (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|)) (.cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse2 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse3 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse3))) (= .cse3 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse2 0) 0))))))) (= (select |c_#valid| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|) 1) (or (let ((.cse4 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse4 8) 0) (= (select .cse4 0) 0))) (exists ((|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (and (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| |c_ULTIMATE.start_create_internal_#t~ret7#1.base| (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int)))) (let ((.cse5 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|)) (.cse6 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse5) (= (select .cse6 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse5 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse5))) (= (select .cse6 8) 0)))))) .cse1))) is different from false [2024-11-14 05:31:57,806 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_create_internal_#t~ret7#1.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select |c_#length| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|) 8) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_~now~0#1.base|)) (or (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse0 0) 0) (= (select .cse0 8) 0))) .cse1 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int)))) (and (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| |c_ULTIMATE.start_create_internal_#t~ret7#1.base| (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|)) (.cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse2 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse3 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse3))) (= .cse3 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse2 0) 0))))))) (= (select |c_#valid| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|) 1) (or (let ((.cse4 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse4 8) 0) (= (select .cse4 0) 0))) (exists ((|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (and (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| |c_ULTIMATE.start_create_internal_#t~ret7#1.base| (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_internal_#t~ret7#1.base|))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int)))) (let ((.cse5 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|)) (.cse6 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse5) (= (select .cse6 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse5 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse5))) (= (select .cse6 8) 0)))))) .cse1))) is different from true [2024-11-14 05:31:57,857 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 05:31:57,978 INFO L349 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2024-11-14 05:31:57,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2024-11-14 05:31:58,067 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 8 treesize of output 1 [2024-11-14 05:31:58,184 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 05:31:58,185 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 1 case distinctions, treesize of input 23 treesize of output 20 [2024-11-14 05:32:00,234 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_internal_~now~0#1.base|) |c_ULTIMATE.start_create_internal_~now~0#1.offset|))) (let ((.cse0 (= |c_ULTIMATE.start_main_~l~0#1.base| .cse4)) (.cse5 (= |c_ULTIMATE.start_main_~l~0#1.base| |c_ULTIMATE.start_create_internal_~now~0#1.base|))) (and (or .cse0 (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|)) (.cse1 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse1 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse2))) (= |c_#memory_$Pointer$.base| (let ((.cse3 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse4 v_DerPreprocessor_1))) (store .cse3 |c_ULTIMATE.start_create_internal_~now~0#1.base| (store (select .cse3 |c_ULTIMATE.start_create_internal_~now~0#1.base|) |c_ULTIMATE.start_create_internal_~now~0#1.offset| .cse4)))) (= .cse2 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse1 0) 0)))) (let ((.cse6 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (or (and (= |c_ULTIMATE.start_create_internal_~now~0#1.offset| 8) .cse5) (= (select .cse6 8) 0)) (or (and .cse5 (= |c_ULTIMATE.start_create_internal_~now~0#1.offset| 0)) (= (select .cse6 0) 0))))) (= (select |c_#valid| .cse4) 1) (let ((.cse7 (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse4)) (.cse9 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_internal_~now~0#1.base|))) (or (and (not .cse7) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse8 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|)) (.cse10 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse8) (= (store (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse4 (select |c_#memory_$Pointer$.offset| .cse4)) |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse9) |c_#memory_$Pointer$.offset|) (= (select .cse10 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse8 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse8))) (= (select .cse10 8) 0))))) (let ((.cse11 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse11 8) 0) (= (select .cse11 0) 0))) .cse0 .cse5 (and .cse7 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse12 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|)) (.cse13 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse9)) (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse12) (= (select .cse13 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse12 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse12))) (= (select .cse13 8) 0))))))) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (= (select |c_#length| .cse4) 8) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_~now~0#1.base|))))) is different from false [2024-11-14 05:32:00,241 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_internal_~now~0#1.base|) |c_ULTIMATE.start_create_internal_~now~0#1.offset|))) (let ((.cse0 (= |c_ULTIMATE.start_main_~l~0#1.base| .cse4)) (.cse5 (= |c_ULTIMATE.start_main_~l~0#1.base| |c_ULTIMATE.start_create_internal_~now~0#1.base|))) (and (or .cse0 (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|)) (.cse1 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse1 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse2))) (= |c_#memory_$Pointer$.base| (let ((.cse3 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse4 v_DerPreprocessor_1))) (store .cse3 |c_ULTIMATE.start_create_internal_~now~0#1.base| (store (select .cse3 |c_ULTIMATE.start_create_internal_~now~0#1.base|) |c_ULTIMATE.start_create_internal_~now~0#1.offset| .cse4)))) (= .cse2 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse1 0) 0)))) (let ((.cse6 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (or (and (= |c_ULTIMATE.start_create_internal_~now~0#1.offset| 8) .cse5) (= (select .cse6 8) 0)) (or (and .cse5 (= |c_ULTIMATE.start_create_internal_~now~0#1.offset| 0)) (= (select .cse6 0) 0))))) (= (select |c_#valid| .cse4) 1) (let ((.cse7 (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse4)) (.cse9 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_internal_~now~0#1.base|))) (or (and (not .cse7) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse8 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|)) (.cse10 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse8) (= (store (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse4 (select |c_#memory_$Pointer$.offset| .cse4)) |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse9) |c_#memory_$Pointer$.offset|) (= (select .cse10 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse8 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse8))) (= (select .cse10 8) 0))))) (let ((.cse11 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select .cse11 8) 0) (= (select .cse11 0) 0))) .cse0 .cse5 (and .cse7 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse12 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|)) (.cse13 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse9)) (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse12) (= (select .cse13 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse12 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse12))) (= (select .cse13 8) 0))))))) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (= (select |c_#length| .cse4) 8) (= 8 (select |c_#length| |c_ULTIMATE.start_create_internal_~now~0#1.base|))))) is different from true [2024-11-14 05:32:00,757 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2024-11-14 05:32:04,478 WARN L851 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (let ((.cse29 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse30 (select .cse29 8)) (.cse39 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse7 (= (select |c_#length| |c_ULTIMATE.start_main_~l~0#1.base|) 8)) (.cse14 (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.base_87| Int)) (and (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int)) (let ((.cse40 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select |c_#valid| .cse40) 1) (= (select |c_#length| .cse40) 8) (= .cse40 |c_ULTIMATE.start_main_~l~0#1.base|) (= .cse40 |c_ULTIMATE.start_create_internal_~now~0#1.base|)))) (= 8 (select |c_#length| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|))))) (.cse4 (= (select .cse39 8) 0)) (.cse5 (= (select .cse39 0) 0)) (.cse8 (= .cse30 0)) (.cse6 (select .cse29 0))) (or (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (let ((.cse0 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse3 (select (select |c_#memory_$Pointer$.base| .cse2) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select .cse0 8) 0) (= |c_#memory_$Pointer$.base| (let ((.cse1 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse3 v_DerPreprocessor_1))) (store .cse1 .cse2 (store (select .cse1 .cse2) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse3)))) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse2))) (= (select |c_#length| .cse2) 8) (= (select |c_#length| .cse3) 8) (= (select .cse0 0) 0) (= (select |c_#valid| .cse3) 1) (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse3))))) .cse4 .cse5) (and (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse6) (= (select |c_#valid| .cse6) 1) (= (select |c_#length| .cse6) 8) .cse7 .cse8) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse9 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse10 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse12 (select (select |c_#memory_$Pointer$.base| .cse9) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse13 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse11 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (and (= (select |c_#length| .cse9) 8) (= (select .cse10 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse11 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse11))) (= .cse12 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse12) 1) (not (= .cse12 .cse9)) (= (store (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse12 (select |c_#memory_$Pointer$.base| .cse12)) .cse9 (store (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse9) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse12)) |c_#memory_$Pointer$.base|) (= (select .cse13 0) 0) (= (select .cse10 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse9 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse9))) (= |c_#memory_$Pointer$.offset| (store (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse12 (select |c_#memory_$Pointer$.offset| .cse12)) .cse9 (select |c_#memory_$Pointer$.offset| .cse9))) (= (select |c_#length| .cse12) 8) (= (select .cse13 8) 0) (= .cse11 .cse9))))) .cse14 (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse17 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (let ((.cse15 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse18 (select (select |c_#memory_$Pointer$.base| .cse17) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select .cse15 8) 0) (= |c_#memory_$Pointer$.base| (let ((.cse16 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse18 v_DerPreprocessor_1))) (store .cse16 .cse17 (store (select .cse16 .cse17) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse18)))) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse17 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse17))) (= (select |c_#length| .cse17) 8) (= (select |c_#length| .cse18) 8) (= (select .cse15 0) 0) (= (select |c_#valid| .cse18) 1) (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse18) (= |c_ULTIMATE.start_main_~l~0#1.base| .cse18))))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse19 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse21 (select |c_#memory_$Pointer$.base| .cse19))) (let ((.cse23 (select .cse21 |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse20 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse24 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse22 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (and (= (select |c_#length| .cse19) 8) (= (select .cse20 8) 0) (= (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse19 .cse21) |c_#memory_$Pointer$.base|) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse22 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse22))) (= .cse23 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse23) 1) (= (select .cse24 0) 0) (= .cse23 .cse19) (= (select .cse20 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse19 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse19))) (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse19 (select |c_#memory_$Pointer$.offset| .cse19))) (= (select .cse24 8) 0) (= .cse22 .cse19)))))) (and .cse7 (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse25 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse26 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|)) (.cse27 (select .cse29 |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select .cse25 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse26 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse26))) (= (select |c_#length| .cse27) 8) (= (select |c_#valid| .cse27) 1) (= .cse27 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse25 0) 0) (= .cse26 |c_ULTIMATE.start_main_~l~0#1.base|) (= (let ((.cse28 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse27 v_DerPreprocessor_1))) (store .cse28 |c_ULTIMATE.start_main_~l~0#1.base| (store (select .cse28 |c_ULTIMATE.start_main_~l~0#1.base|) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse27))) |c_#memory_$Pointer$.base|))))) (and (or (and (= (select |c_#valid| .cse30) 1) (= .cse30 |c_ULTIMATE.start_create_internal_~now~0#1.base|) .cse7 (= 8 (select |c_#length| .cse30))) (and (or (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse31 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse32 (select (select |c_#memory_$Pointer$.base| .cse31) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse33 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select |c_#length| .cse31) 8) (= .cse32 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse32) 1) (= (select .cse33 0) 0) (= .cse32 .cse31) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse31 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse31))) (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse31 (select |c_#memory_$Pointer$.offset| .cse31))) (= (select .cse33 8) 0))))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse34 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse35 (select (select |c_#memory_$Pointer$.base| .cse34) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse36 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select |c_#length| .cse34) 8) (= .cse35 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse35) 1) (not (= .cse35 .cse34)) (= (select .cse36 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse34 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse34))) (= |c_#memory_$Pointer$.offset| (store (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse35 (select |c_#memory_$Pointer$.offset| .cse35)) .cse34 (select |c_#memory_$Pointer$.offset| .cse34))) (= (select |c_#length| .cse35) 8) (= (select .cse36 8) 0))))) (and .cse7 (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int)) (let ((.cse37 (select .cse29 |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select |c_#length| .cse37) 8) (= (select |c_#valid| .cse37) 1) (= .cse37 |c_ULTIMATE.start_create_internal_~now~0#1.base|))))) .cse14 (and (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_ULTIMATE.start_create_internal_~now~0#1.base_87| Int)) (let ((.cse38 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select |c_#valid| .cse38) 1) (= (select |c_#length| .cse38) 8) (= 8 (select |c_#length| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|)) (= .cse38 |c_ULTIMATE.start_create_internal_~now~0#1.base|)))) .cse4 .cse5)) .cse8)) (= .cse6 0))))))) is different from false [2024-11-14 05:32:04,490 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~l~0#1.offset| 0) (let ((.cse29 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse30 (select .cse29 8)) (.cse39 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse7 (= (select |c_#length| |c_ULTIMATE.start_main_~l~0#1.base|) 8)) (.cse14 (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.base_87| Int)) (and (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int)) (let ((.cse40 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select |c_#valid| .cse40) 1) (= (select |c_#length| .cse40) 8) (= .cse40 |c_ULTIMATE.start_main_~l~0#1.base|) (= .cse40 |c_ULTIMATE.start_create_internal_~now~0#1.base|)))) (= 8 (select |c_#length| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|))))) (.cse4 (= (select .cse39 8) 0)) (.cse5 (= (select .cse39 0) 0)) (.cse8 (= .cse30 0)) (.cse6 (select .cse29 0))) (or (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (let ((.cse0 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse3 (select (select |c_#memory_$Pointer$.base| .cse2) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select .cse0 8) 0) (= |c_#memory_$Pointer$.base| (let ((.cse1 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse3 v_DerPreprocessor_1))) (store .cse1 .cse2 (store (select .cse1 .cse2) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse3)))) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse2 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse2))) (= (select |c_#length| .cse2) 8) (= (select |c_#length| .cse3) 8) (= (select .cse0 0) 0) (= (select |c_#valid| .cse3) 1) (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse3))))) .cse4 .cse5) (and (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse6) (= (select |c_#valid| .cse6) 1) (= (select |c_#length| .cse6) 8) .cse7 .cse8) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse9 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse10 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse12 (select (select |c_#memory_$Pointer$.base| .cse9) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse13 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse11 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (and (= (select |c_#length| .cse9) 8) (= (select .cse10 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse11 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse11))) (= .cse12 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse12) 1) (not (= .cse12 .cse9)) (= (store (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse12 (select |c_#memory_$Pointer$.base| .cse12)) .cse9 (store (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse9) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse12)) |c_#memory_$Pointer$.base|) (= (select .cse13 0) 0) (= (select .cse10 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse9 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse9))) (= |c_#memory_$Pointer$.offset| (store (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse12 (select |c_#memory_$Pointer$.offset| .cse12)) .cse9 (select |c_#memory_$Pointer$.offset| .cse9))) (= (select |c_#length| .cse12) 8) (= (select .cse13 8) 0) (= .cse11 .cse9))))) .cse14 (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse17 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (let ((.cse15 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse18 (select (select |c_#memory_$Pointer$.base| .cse17) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select .cse15 8) 0) (= |c_#memory_$Pointer$.base| (let ((.cse16 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse18 v_DerPreprocessor_1))) (store .cse16 .cse17 (store (select .cse16 .cse17) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse18)))) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse17 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse17))) (= (select |c_#length| .cse17) 8) (= (select |c_#length| .cse18) 8) (= (select .cse15 0) 0) (= (select |c_#valid| .cse18) 1) (= |c_ULTIMATE.start_create_internal_~now~0#1.base| .cse18) (= |c_ULTIMATE.start_main_~l~0#1.base| .cse18))))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse19 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse21 (select |c_#memory_$Pointer$.base| .cse19))) (let ((.cse23 (select .cse21 |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse20 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse24 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse22 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|))) (and (= (select |c_#length| .cse19) 8) (= (select .cse20 8) 0) (= (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse19 .cse21) |c_#memory_$Pointer$.base|) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse22 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse22))) (= .cse23 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse23) 1) (= (select .cse24 0) 0) (= .cse23 .cse19) (= (select .cse20 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse19 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse19))) (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse19 (select |c_#memory_$Pointer$.offset| .cse19))) (= (select .cse24 8) 0) (= .cse22 .cse19)))))) (and .cse7 (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_#memory_$Pointer$.base_BEFORE_CALL_374| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_372| (Array Int (Array Int Int)))) (let ((.cse25 (select |v_#memory_$Pointer$.base_BEFORE_CALL_372| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse26 (@diff |v_#memory_$Pointer$.base_BEFORE_CALL_372| |v_#memory_$Pointer$.base_BEFORE_CALL_374|)) (.cse27 (select .cse29 |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select .cse25 8) 0) (= |v_#memory_$Pointer$.base_BEFORE_CALL_374| (store |v_#memory_$Pointer$.base_BEFORE_CALL_372| .cse26 (select |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse26))) (= (select |c_#length| .cse27) 8) (= (select |c_#valid| .cse27) 1) (= .cse27 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select .cse25 0) 0) (= .cse26 |c_ULTIMATE.start_main_~l~0#1.base|) (= (let ((.cse28 (store |v_#memory_$Pointer$.base_BEFORE_CALL_374| .cse27 v_DerPreprocessor_1))) (store .cse28 |c_ULTIMATE.start_main_~l~0#1.base| (store (select .cse28 |c_ULTIMATE.start_main_~l~0#1.base|) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82| .cse27))) |c_#memory_$Pointer$.base|))))) (and (or (and (= (select |c_#valid| .cse30) 1) (= .cse30 |c_ULTIMATE.start_create_internal_~now~0#1.base|) .cse7 (= 8 (select |c_#length| .cse30))) (and (or (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse31 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse32 (select (select |c_#memory_$Pointer$.base| .cse31) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse33 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select |c_#length| .cse31) 8) (= .cse32 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse32) 1) (= (select .cse33 0) 0) (= .cse32 .cse31) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse31 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse31))) (= |c_#memory_$Pointer$.offset| (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse31 (select |c_#memory_$Pointer$.offset| .cse31))) (= (select .cse33 8) 0))))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_370| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (Array Int (Array Int Int)))) (let ((.cse34 (@diff |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213|))) (let ((.cse35 (select (select |c_#memory_$Pointer$.base| .cse34) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|)) (.cse36 (select |v_#memory_$Pointer$.offset_BEFORE_CALL_370| |c_ULTIMATE.start_main_~l~0#1.base|))) (and (= (select |c_#length| .cse34) 8) (= .cse35 |c_ULTIMATE.start_create_internal_~now~0#1.base|) (= (select |c_#valid| .cse35) 1) (not (= .cse35 .cse34)) (= (select .cse36 0) 0) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| (store |v_#memory_$Pointer$.offset_BEFORE_CALL_370| .cse34 (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse34))) (= |c_#memory_$Pointer$.offset| (store (store |v_old(#memory_$Pointer$.offset)_AFTER_CALL_213| .cse35 (select |c_#memory_$Pointer$.offset| .cse35)) .cse34 (select |c_#memory_$Pointer$.offset| .cse34))) (= (select |c_#length| .cse35) 8) (= (select .cse36 8) 0))))) (and .cse7 (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int)) (let ((.cse37 (select .cse29 |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select |c_#length| .cse37) 8) (= (select |c_#valid| .cse37) 1) (= .cse37 |c_ULTIMATE.start_create_internal_~now~0#1.base|))))) .cse14 (and (exists ((|v_ULTIMATE.start_create_internal_~now~0#1.offset_82| Int) (|v_ULTIMATE.start_create_internal_~now~0#1.base_87| Int)) (let ((.cse38 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|) |v_ULTIMATE.start_create_internal_~now~0#1.offset_82|))) (and (= (select |c_#valid| .cse38) 1) (= (select |c_#length| .cse38) 8) (= 8 (select |c_#length| |v_ULTIMATE.start_create_internal_~now~0#1.base_87|)) (= .cse38 |c_ULTIMATE.start_create_internal_~now~0#1.base|)))) .cse4 .cse5)) .cse8)) (= .cse6 0))))))) is different from true [2024-11-14 05:33:14,530 WARN L286 SmtUtils]: Spent 52.50s on a formula simplification. DAG size of input: 1064 DAG size of output: 1001 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-14 05:33:14,530 INFO L349 Elim1Store]: treesize reduction 338, result has 90.7 percent of original size [2024-11-14 05:33:14,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 231 case distinctions, treesize of input 1051 treesize of output 4215 [2024-11-14 05:33:15,500 INFO L224 Elim1Store]: Index analysis took 745 ms [2024-11-14 05:33:23,706 WARN L286 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 439 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-14 05:33:23,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:33:23,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 938 treesize of output 2406 [2024-11-14 05:38:55,452 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:38:55,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 05:38:55,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:38:55,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871644877] [2024-11-14 05:38:55,453 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 05:38:55,454 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:38:55,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:38:55,454 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:38:55,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:38:55,458 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:38:55,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:38:55,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-11-14 05:38:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949836872] [2024-11-14 05:38:55,463 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 05:38:55,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 05:38:55,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 05:38:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1146, Unknown=18, NotChecked=360, Total=1640 [2024-11-14 05:38:55,465 INFO L87 Difference]: Start difference. First operand 145 states and 179 transitions. Second operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:38:55,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=116, Invalid=1146, Unknown=18, NotChecked=360, Total=1640 [2024-11-14 05:38:55,468 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 05:38:55,469 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 05:38:55,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:38:55,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:55,670 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_87fa2d81-87f0-47df-913c-472263d33d61/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 05:38:55,673 INFO L158 Benchmark]: Toolchain (without parser) took 701666.57ms. Allocated memory was 142.6MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 105.0MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 555.7MB. Max. memory is 16.1GB. [2024-11-14 05:38:55,673 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 167.8MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:38:55,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.83ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 85.6MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:38:55,674 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.20ms. Allocated memory is still 142.6MB. Free memory was 85.6MB in the beginning and 83.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:38:55,674 INFO L158 Benchmark]: Boogie Preprocessor took 33.83ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 82.8MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:38:55,674 INFO L158 Benchmark]: RCFGBuilder took 811.78ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 59.0MB in the end (delta: 23.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:38:55,674 INFO L158 Benchmark]: TraceAbstraction took 700081.71ms. Allocated memory was 142.6MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 58.3MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 522.1MB. Max. memory is 16.1GB. [2024-11-14 05:38:55,675 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 167.8MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.83ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 85.6MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.20ms. Allocated memory is still 142.6MB. Free memory was 85.6MB in the beginning and 83.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.83ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 82.8MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 811.78ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 59.0MB in the end (delta: 23.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 700081.71ms. Allocated memory was 142.6MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 58.3MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 522.1MB. 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_87fa2d81-87f0-47df-913c-472263d33d61/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_87fa2d81-87f0-47df-913c-472263d33d61/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_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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_87fa2d81-87f0-47df-913c-472263d33d61/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 f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:38:58,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:38:59,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2024-11-14 05:38:59,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:38:59,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:38:59,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:38:59,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:38:59,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:38:59,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:38:59,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:38:59,159 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:38:59,159 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:38:59,159 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:38:59,159 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:38:59,160 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:38:59,160 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:38:59,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:38:59,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:38:59,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:38:59,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:38:59,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:38:59,161 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:38:59,161 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:38:59,162 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:38:59,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:38:59,162 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:38:59,165 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:38:59,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:38:59,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:38:59,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:38:59,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:38:59,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:38:59,167 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:38:59,167 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:38:59,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:38:59,167 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:38:59,167 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_87fa2d81-87f0-47df-913c-472263d33d61/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 -> f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1 [2024-11-14 05:38:59,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:38:59,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:38:59,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:38:59,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:38:59,559 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:38:59,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i Unable to find full path for "g++" [2024-11-14 05:39:01,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:39:02,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:39:02,172 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i [2024-11-14 05:39:02,210 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data/a048b784a/fb258782c02a46d89a19612fcb3ef0ec/FLAG3f3761a16 [2024-11-14 05:39:02,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/data/a048b784a/fb258782c02a46d89a19612fcb3ef0ec [2024-11-14 05:39:02,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:39:02,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:39:02,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:39:02,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:39:02,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:39:02,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdb254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02, skipping insertion in model container [2024-11-14 05:39:02,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,316 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:39:02,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:39:02,734 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:39:02,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:39:02,813 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:39:02,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02 WrapperNode [2024-11-14 05:39:02,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:39:02,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:39:02,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:39:02,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:39:02,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,889 INFO L138 Inliner]: procedures = 122, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 87 [2024-11-14 05:39:02,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:39:02,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:39:02,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:39:02,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:39:02,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:39:02,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:39:02,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:39:02,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:39:02,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (1/1) ... [2024-11-14 05:39:02,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:39:02,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:03,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:39:03,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:39:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-14 05:39:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-14 05:39:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 05:39:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 05:39:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:39:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:39:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:39:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:39:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:39:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:39:03,203 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:39:03,206 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:39:03,782 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2024-11-14 05:39:03,782 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:39:03,794 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:39:03,794 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-14 05:39:03,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:39:03 BoogieIcfgContainer [2024-11-14 05:39:03,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:39:03,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:39:03,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:39:03,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:39:03,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:39:02" (1/3) ... [2024-11-14 05:39:03,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6102ceaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:39:03, skipping insertion in model container [2024-11-14 05:39:03,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:39:02" (2/3) ... [2024-11-14 05:39:03,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6102ceaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:39:03, skipping insertion in model container [2024-11-14 05:39:03,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:39:03" (3/3) ... [2024-11-14 05:39:03,807 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-shared-sll-after.i [2024-11-14 05:39:03,824 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:39:03,827 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-shared-sll-after.i that has 3 procedures, 86 locations, 1 initial locations, 5 loop locations, and 29 error locations. [2024-11-14 05:39:03,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:39:03,896 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;@37d3eafa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:39:03,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-14 05:39:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 50 states have (on average 1.78) internal successors, (89), 79 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:39:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:39:03,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:03,914 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:39:03,914 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:03,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash 37400200, now seen corresponding path program 1 times [2024-11-14 05:39:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:03,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619149106] [2024-11-14 05:39:03,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:03,931 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 05:39:03,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:03,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:03,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:04,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:39:04,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:04,131 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 05:39:04,163 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 05:39:04,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:04,165 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619149106] [2024-11-14 05:39:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619149106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:04,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:04,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:39:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584851703] [2024-11-14 05:39:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:04,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:39:04,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:39:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:39:04,211 INFO L87 Difference]: Start difference. First operand has 86 states, 50 states have (on average 1.78) internal successors, (89), 79 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 05:39:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:04,427 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-11-14 05:39:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:39:04,431 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 05:39:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:04,439 INFO L225 Difference]: With dead ends: 84 [2024-11-14 05:39:04,440 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 05:39:04,442 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 05:39:04,446 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:04,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 142 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:39:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 05:39:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 05:39:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.6326530612244898) internal successors, (80), 75 states have internal predecessors, (80), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:39:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-14 05:39:04,500 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 5 [2024-11-14 05:39:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:04,501 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-14 05:39:04,502 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 05:39:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-14 05:39:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 05:39:04,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:04,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 05:39:04,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:04,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:04,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:04,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:04,704 INFO L85 PathProgramCache]: Analyzing trace with hash 37400201, now seen corresponding path program 1 times [2024-11-14 05:39:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:04,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615687985] [2024-11-14 05:39:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:04,705 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 05:39:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:04,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:04,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:04,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:39:04,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:04,780 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 05:39:04,800 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 05:39:04,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:04,801 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615687985] [2024-11-14 05:39:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615687985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:04,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:04,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:39:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180543263] [2024-11-14 05:39:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:04,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:39:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:39:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:39:04,804 INFO L87 Difference]: Start difference. First operand 82 states and 88 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 05:39:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:05,032 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2024-11-14 05:39:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:39:05,033 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 05:39:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:05,035 INFO L225 Difference]: With dead ends: 80 [2024-11-14 05:39:05,035 INFO L226 Difference]: Without dead ends: 80 [2024-11-14 05:39:05,036 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 05:39:05,037 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:05,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 146 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:39:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-14 05:39:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-14 05:39:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:39:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2024-11-14 05:39:05,048 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 5 [2024-11-14 05:39:05,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:05,048 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2024-11-14 05:39:05,049 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 05:39:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2024-11-14 05:39:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:39:05,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:05,050 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 05:39:05,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,250 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:05,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash -19971735, now seen corresponding path program 1 times [2024-11-14 05:39:05,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:05,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394914868] [2024-11-14 05:39:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:05,253 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 05:39:05,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:05,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:05,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:39:05,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:05,397 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 7 [2024-11-14 05:39:05,412 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 05:39:05,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:05,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394914868] [2024-11-14 05:39:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394914868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:05,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:05,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:39:05,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880425595] [2024-11-14 05:39:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:05,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:39:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:39:05,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:39:05,418 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:39:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:05,643 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2024-11-14 05:39:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:39:05,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 05:39:05,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:05,645 INFO L225 Difference]: With dead ends: 79 [2024-11-14 05:39:05,645 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 05:39:05,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 05:39:05,646 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 1 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:05,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 137 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:39:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 05:39:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-14 05:39:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:39:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2024-11-14 05:39:05,663 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2024-11-14 05:39:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:05,665 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2024-11-14 05:39:05,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:39:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2024-11-14 05:39:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 05:39:05,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:05,667 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 05:39:05,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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)] Ended with exit code 0 [2024-11-14 05:39:05,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:05,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:05,869 INFO L85 PathProgramCache]: Analyzing trace with hash -19971734, now seen corresponding path program 1 times [2024-11-14 05:39:05,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:05,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198009999] [2024-11-14 05:39:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:05,870 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 05:39:05,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:05,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:05,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:39:05,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:06,024 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 05:39:06,047 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 05:39:06,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:06,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198009999] [2024-11-14 05:39:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198009999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:39:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956990962] [2024-11-14 05:39:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:06,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:39:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:39:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:39:06,050 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:39:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:06,368 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2024-11-14 05:39:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:39:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 05:39:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:06,372 INFO L225 Difference]: With dead ends: 78 [2024-11-14 05:39:06,372 INFO L226 Difference]: Without dead ends: 78 [2024-11-14 05:39:06,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 05:39:06,373 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 1 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:06,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 144 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-14 05:39:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-14 05:39:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 71 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:39:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2024-11-14 05:39:06,390 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 17 [2024-11-14 05:39:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:06,390 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2024-11-14 05:39:06,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 05:39:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2024-11-14 05:39:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:39:06,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:06,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:06,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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)] Ended with exit code 0 [2024-11-14 05:39:06,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:06,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:06,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 959195788, now seen corresponding path program 1 times [2024-11-14 05:39:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:06,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473341049] [2024-11-14 05:39:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:06,595 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 05:39:06,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:06,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:06,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:06,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:39:06,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:06,736 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 05:39:06,866 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 05:39:06,946 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:06,947 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 05:39:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-14 05:39:06,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:07,378 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 05:39:07,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:07,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473341049] [2024-11-14 05:39:07,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473341049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [378765252] [2024-11-14 05:39:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:07,381 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:07,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:07,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:07,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-14 05:39:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:07,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:39:07,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:07,632 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 05:39:07,754 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:07,754 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 05:39:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-14 05:39:07,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:08,120 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 05:39:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [378765252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559563397] [2024-11-14 05:39:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:08,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:08,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:08,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:39:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:08,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:39:08,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:08,445 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:39:08,446 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 21 treesize of output 20 [2024-11-14 05:39:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:08,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:08,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559563397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:08,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:39:08,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 6, 7, 6] total 9 [2024-11-14 05:39:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881013343] [2024-11-14 05:39:08,792 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:08,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:39:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:39:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=56, Unknown=1, NotChecked=14, Total=90 [2024-11-14 05:39:08,794 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:39:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:09,664 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-11-14 05:39:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:39:09,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2024-11-14 05:39:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:09,666 INFO L225 Difference]: With dead ends: 83 [2024-11-14 05:39:09,666 INFO L226 Difference]: Without dead ends: 83 [2024-11-14 05:39:09,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 97 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-14 05:39:09,667 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 7 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:09,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 380 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 87 Unchecked, 0.8s Time] [2024-11-14 05:39:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-14 05:39:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-14 05:39:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 73 states have internal predecessors, (80), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:39:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-14 05:39:09,677 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 20 [2024-11-14 05:39:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:09,677 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-14 05:39:09,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:39:09,678 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-14 05:39:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 05:39:09,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:09,679 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:09,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-14 05:39:09,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:10,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 05:39:10,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:10,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:10,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash 959195789, now seen corresponding path program 1 times [2024-11-14 05:39:10,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:10,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695208304] [2024-11-14 05:39:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:10,281 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 05:39:10,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:10,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:10,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:39:10,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:10,426 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 05:39:10,437 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 05:39:10,761 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 05:39:10,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:10,857 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 05:39:10,882 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:10,882 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 05:39:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-14 05:39:10,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:11,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695208304] [2024-11-14 05:39:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695208304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:11,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [377406074] [2024-11-14 05:39:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:11,354 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:11,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:11,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-14 05:39:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:11,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:39:11,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:11,594 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 [2024-11-14 05:39:11,602 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 05:39:11,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:11,831 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 05:39:11,849 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:11,849 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 05:39:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-14 05:39:11,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [377406074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982070144] [2024-11-14 05:39:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:12,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:12,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:12,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:12,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:39:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:12,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:39:12,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:12,350 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 05:39:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:12,652 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 05:39:12,669 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:12,669 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 05:39:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-14 05:39:12,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:12,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982070144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:12,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:12,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 9 [2024-11-14 05:39:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780432312] [2024-11-14 05:39:12,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:12,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:39:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:39:12,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-14 05:39:12,936 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 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 05:39:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:13,764 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-14 05:39:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:39:13,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 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 20 [2024-11-14 05:39:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:13,766 INFO L225 Difference]: With dead ends: 85 [2024-11-14 05:39:13,767 INFO L226 Difference]: Without dead ends: 85 [2024-11-14 05:39:13,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-14 05:39:13,768 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 7 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:13,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 308 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 88 Unchecked, 0.6s Time] [2024-11-14 05:39:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-14 05:39:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-11-14 05:39:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.5) internal successors, (81), 75 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:39:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-11-14 05:39:13,776 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 20 [2024-11-14 05:39:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:13,776 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-11-14 05:39:13,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 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 05:39:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-11-14 05:39:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:39:13,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:13,778 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 05:39:13,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-14 05:39:13,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:39:14,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:14,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:14,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:14,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 661616073, now seen corresponding path program 1 times [2024-11-14 05:39:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:14,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986319056] [2024-11-14 05:39:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:14,380 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 05:39:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:14,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:14,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:14,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:39:14,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:14,529 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 05:39:14,689 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (_ bv1 1)))) is different from true [2024-11-14 05:39:14,731 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:14,731 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 05:39:14,809 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 05:39:14,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:14,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986319056] [2024-11-14 05:39:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986319056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:14,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:14,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 05:39:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28433461] [2024-11-14 05:39:14,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:14,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:39:14,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:39:14,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=74, Unknown=1, NotChecked=16, Total=110 [2024-11-14 05:39:14,811 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 05:39:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:15,557 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2024-11-14 05:39:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:39:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 27 [2024-11-14 05:39:15,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:15,559 INFO L225 Difference]: With dead ends: 101 [2024-11-14 05:39:15,559 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:39:15,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=90, Unknown=1, NotChecked=18, Total=132 [2024-11-14 05:39:15,561 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 16 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:15,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 360 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 325 Invalid, 0 Unknown, 166 Unchecked, 0.7s Time] [2024-11-14 05:39:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:39:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2024-11-14 05:39:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 83 states have internal predecessors, (92), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2024-11-14 05:39:15,581 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 27 [2024-11-14 05:39:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:15,585 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2024-11-14 05:39:15,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 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 05:39:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2024-11-14 05:39:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:39:15,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:15,586 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 05:39:15,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:15,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:15,787 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:15,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:15,788 INFO L85 PathProgramCache]: Analyzing trace with hash 661616074, now seen corresponding path program 1 times [2024-11-14 05:39:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074425294] [2024-11-14 05:39:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:15,788 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 05:39:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:15,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:15,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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)] Waiting until timeout for monitored process [2024-11-14 05:39:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:15,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 05:39:15,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:15,935 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 05:39:15,947 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 05:39:16,286 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:39:16,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:16,342 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 05:39:16,363 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:16,363 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 05:39:16,494 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 05:39:16,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:16,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:16,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074425294] [2024-11-14 05:39:16,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074425294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:16,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:16,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 05:39:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103732428] [2024-11-14 05:39:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:16,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:39:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:39:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=91, Unknown=1, NotChecked=18, Total=132 [2024-11-14 05:39:16,497 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 05:39:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:17,561 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-14 05:39:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:39:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 27 [2024-11-14 05:39:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:17,563 INFO L225 Difference]: With dead ends: 102 [2024-11-14 05:39:17,563 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 05:39:17,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=109, Unknown=1, NotChecked=20, Total=156 [2024-11-14 05:39:17,564 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 16 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:17,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 342 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 358 Invalid, 0 Unknown, 173 Unchecked, 1.0s Time] [2024-11-14 05:39:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 05:39:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-11-14 05:39:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.4375) internal successors, (92), 84 states have internal predecessors, (92), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2024-11-14 05:39:17,572 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 27 [2024-11-14 05:39:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:17,573 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2024-11-14 05:39:17,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 05:39:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2024-11-14 05:39:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:39:17,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:17,575 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:17,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:17,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:17,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:17,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1556119885, now seen corresponding path program 1 times [2024-11-14 05:39:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824657826] [2024-11-14 05:39:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:17,776 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 05:39:17,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:17,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:17,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (14)] Waiting until timeout for monitored process [2024-11-14 05:39:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:17,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:39:17,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:17,924 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 05:39:18,013 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (_ bv1 1)))) is different from true [2024-11-14 05:39:18,046 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:18,046 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 05:39:18,074 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 05:39:18,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:18,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824657826] [2024-11-14 05:39:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824657826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1038797890] [2024-11-14 05:39:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:18,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:18,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:18,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:18,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 05:39:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:18,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:39:18,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:18,544 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 05:39:18,607 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:18,607 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 05:39:18,627 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 05:39:18,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1038797890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216442422] [2024-11-14 05:39:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:18,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:18,849 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:18,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:39:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:18,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:39:18,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:18,975 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 05:39:19,015 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:39:19,077 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:39:19,077 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 21 treesize of output 20 [2024-11-14 05:39:19,084 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 05:39:19,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:39:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216442422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:19,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:39:19,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 6, 7, 6] total 9 [2024-11-14 05:39:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944709184] [2024-11-14 05:39:19,302 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:19,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:39:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:39:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=44, Unknown=2, NotChecked=26, Total=90 [2024-11-14 05:39:19,304 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:39:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:19,973 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2024-11-14 05:39:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:39:19,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2024-11-14 05:39:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:19,975 INFO L225 Difference]: With dead ends: 98 [2024-11-14 05:39:19,975 INFO L226 Difference]: Without dead ends: 98 [2024-11-14 05:39:19,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 156 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=70, Unknown=2, NotChecked=34, Total=132 [2024-11-14 05:39:19,977 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:19,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 294 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 180 Invalid, 0 Unknown, 172 Unchecked, 0.6s Time] [2024-11-14 05:39:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-14 05:39:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-14 05:39:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 86 states have internal predecessors, (96), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:39:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2024-11-14 05:39:19,983 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 30 [2024-11-14 05:39:19,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:19,984 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2024-11-14 05:39:19,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:39:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2024-11-14 05:39:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:39:19,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:19,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:19,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (14)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:20,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-14 05:39:20,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 05:39:20,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:20,586 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:20,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1556119886, now seen corresponding path program 1 times [2024-11-14 05:39:20,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:20,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13986186] [2024-11-14 05:39:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:20,587 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 05:39:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:20,589 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:20,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:20,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:39:20,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:20,764 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 05:39:20,906 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (_ bv8 64)) |c_#length|)) is different from true [2024-11-14 05:39:20,949 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:39:20,949 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 12 treesize of output 14 [2024-11-14 05:39:20,975 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 05:39:20,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:21,280 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13986186] [2024-11-14 05:39:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13986186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [844058267] [2024-11-14 05:39:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:21,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:21,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:21,282 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:21,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-14 05:39:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:21,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:39:21,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:21,517 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 05:39:21,527 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 05:39:21,817 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:39:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:21,867 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 05:39:21,881 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:21,881 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 05:39:21,891 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 05:39:21,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [844058267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819509188] [2024-11-14 05:39:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:22,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:22,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:22,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 05:39:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:22,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:39:22,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:22,294 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 05:39:22,303 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 05:39:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:22,440 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 05:39:22,454 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:22,454 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 05:39:22,461 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 05:39:22,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:22,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819509188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:22,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:22,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2024-11-14 05:39:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525393517] [2024-11-14 05:39:22,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:22,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 05:39:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 05:39:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=174, Unknown=2, NotChecked=54, Total=272 [2024-11-14 05:39:22,686 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:39:23,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:23,649 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2024-11-14 05:39:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:39:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 30 [2024-11-14 05:39:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:23,651 INFO L225 Difference]: With dead ends: 100 [2024-11-14 05:39:23,651 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 05:39:23,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=226, Unknown=4, NotChecked=62, Total=342 [2024-11-14 05:39:23,653 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 7 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:23,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 419 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 174 Unchecked, 0.7s Time] [2024-11-14 05:39:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 05:39:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-14 05:39:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 88 states have internal predecessors, (97), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:39:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2024-11-14 05:39:23,659 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 30 [2024-11-14 05:39:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:23,660 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2024-11-14 05:39:23,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:39:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2024-11-14 05:39:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 05:39:23,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:23,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:23,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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)] Ended with exit code 0 [2024-11-14 05:39:23,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-14 05:39:24,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 05:39:24,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:24,263 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:24,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 157838294, now seen corresponding path program 1 times [2024-11-14 05:39:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959473252] [2024-11-14 05:39:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:24,264 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 05:39:24,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:24,266 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:24,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (20)] Waiting until timeout for monitored process [2024-11-14 05:39:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:24,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:39:24,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:24,485 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 05:39:24,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:24,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959473252] [2024-11-14 05:39:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959473252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:24,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:24,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 05:39:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387523688] [2024-11-14 05:39:24,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:24,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:39:24,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:39:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:39:24,487 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 1 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 05:39:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:24,831 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2024-11-14 05:39:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:39:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 1 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 29 [2024-11-14 05:39:24,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:24,836 INFO L225 Difference]: With dead ends: 101 [2024-11-14 05:39:24,836 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:39:24,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 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 05:39:24,837 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 30 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:24,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 518 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:39:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-11-14 05:39:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 89 states have internal predecessors, (97), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:39:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2024-11-14 05:39:24,844 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 29 [2024-11-14 05:39:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:24,844 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2024-11-14 05:39:24,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 1 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 05:39:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2024-11-14 05:39:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 05:39:24,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:24,846 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, 1, 1, 1, 1] [2024-11-14 05:39:24,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (20)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:25,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:25,046 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:25,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1406310221, now seen corresponding path program 1 times [2024-11-14 05:39:25,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:25,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724117040] [2024-11-14 05:39:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:25,047 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 05:39:25,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:25,052 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:25,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (21)] Waiting until timeout for monitored process [2024-11-14 05:39:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:25,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 05:39:25,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:25,196 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 05:39:25,216 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 05:39:25,226 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 05:39:25,264 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 23 treesize of output 11 [2024-11-14 05:39:25,275 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 19 treesize of output 18 [2024-11-14 05:39:25,764 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$.offset| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$.base| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$.base|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:39:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:25,803 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 23 treesize of output 16 [2024-11-14 05:39:25,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:25,821 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 16 treesize of output 11 [2024-11-14 05:39:25,837 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:25,837 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 05:39:26,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:39:26,048 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 30 treesize of output 14 [2024-11-14 05:39:26,060 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 23 treesize of output 11 [2024-11-14 05:39:26,227 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 05:39:26,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:26,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724117040] [2024-11-14 05:39:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724117040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974511470] [2024-11-14 05:39:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:26,685 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:26,688 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:26,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-14 05:39:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:26,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 05:39:26,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:26,984 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 05:39:26,998 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 05:39:27,006 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 05:39:27,026 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 23 treesize of output 11 [2024-11-14 05:39:27,035 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 19 treesize of output 18 [2024-11-14 05:39:27,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:27,340 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 16 treesize of output 11 [2024-11-14 05:39:27,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:27,352 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 23 treesize of output 16 [2024-11-14 05:39:27,374 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:27,374 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 05:39:27,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:39:27,502 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 30 treesize of output 14 [2024-11-14 05:39:27,511 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 23 treesize of output 11 [2024-11-14 05:39:27,545 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 05:39:27,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [974511470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443004933] [2024-11-14 05:39:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:27,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:27,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:27,938 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:27,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:39:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:28,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-14 05:39:28,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:28,114 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 05:39:28,125 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 05:39:28,225 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 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 05:39:28,244 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 27 treesize of output 11 [2024-11-14 05:39:29,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:29,176 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 18 [2024-11-14 05:39:29,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:29,197 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 16 treesize of output 11 [2024-11-14 05:39:29,218 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:29,218 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 05:39:29,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:39:29,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 36 treesize of output 14 [2024-11-14 05:39:29,525 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 27 treesize of output 11 [2024-11-14 05:39:29,552 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 05:39:29,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443004933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:29,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 28 [2024-11-14 05:39:29,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159005427] [2024-11-14 05:39:29,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:29,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 05:39:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 05:39:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=4, NotChecked=54, Total=870 [2024-11-14 05:39:29,978 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 28 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:39:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:31,772 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-14 05:39:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:39:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-14 05:39:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:31,774 INFO L225 Difference]: With dead ends: 102 [2024-11-14 05:39:31,774 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 05:39:31,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=93, Invalid=777, Unknown=4, NotChecked=56, Total=930 [2024-11-14 05:39:31,775 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 5 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:31,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 874 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 589 Invalid, 0 Unknown, 244 Unchecked, 1.7s Time] [2024-11-14 05:39:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 05:39:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-14 05:39:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.375) internal successors, (99), 91 states have internal predecessors, (99), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:39:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2024-11-14 05:39:31,782 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 31 [2024-11-14 05:39:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:31,783 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2024-11-14 05:39:31,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 25 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:39:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2024-11-14 05:39:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:31,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:31,784 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:31,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (21)] Ended with exit code 0 [2024-11-14 05:39:31,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:32,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:39:32,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:32,386 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:32,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2075916606, now seen corresponding path program 1 times [2024-11-14 05:39:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:32,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52089358] [2024-11-14 05:39:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:32,387 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 05:39:32,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:32,389 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:32,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (24)] Waiting until timeout for monitored process [2024-11-14 05:39:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:32,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:39:32,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:32,559 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 05:39:32,599 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 05:39:32,625 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 19 treesize of output 11 [2024-11-14 05:39:32,689 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 05:39:32,727 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:32,727 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 05:39:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-14 05:39:32,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:39:33,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52089358] [2024-11-14 05:39:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52089358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1503876079] [2024-11-14 05:39:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:33,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:33,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:33,013 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:33,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-14 05:39:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:33,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:39:33,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:33,374 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 05:39:33,404 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 05:39:33,419 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 19 treesize of output 11 [2024-11-14 05:39:33,479 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:33,479 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 05:39:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-14 05:39:33,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:39:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1503876079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513925765] [2024-11-14 05:39:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:33,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:33,784 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:33,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 05:39:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:33,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:39:33,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:33,940 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 05:39:33,950 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 19 treesize of output 11 [2024-11-14 05:39:34,069 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:39:34,069 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 21 treesize of output 20 [2024-11-14 05:39:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:39:34,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:39:34,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513925765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:34,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:39:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 8, 9, 8] total 11 [2024-11-14 05:39:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922002181] [2024-11-14 05:39:34,331 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:34,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:39:34,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:39:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=90, Unknown=1, NotChecked=18, Total=132 [2024-11-14 05:39:34,332 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:39:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:35,244 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2024-11-14 05:39:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:39:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-14 05:39:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:35,246 INFO L225 Difference]: With dead ends: 100 [2024-11-14 05:39:35,246 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 05:39:35,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 172 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2024-11-14 05:39:35,247 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 7 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:35,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 516 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 314 Invalid, 1 Unknown, 83 Unchecked, 0.8s Time] [2024-11-14 05:39:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 05:39:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-14 05:39:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 90 states have internal predecessors, (98), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:39:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2024-11-14 05:39:35,253 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 33 [2024-11-14 05:39:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:35,253 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2024-11-14 05:39:35,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 05:39:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2024-11-14 05:39:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:35,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:35,255 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:35,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-14 05:39:35,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (24)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:35,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:35,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:35,856 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:35,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2075916607, now seen corresponding path program 1 times [2024-11-14 05:39:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:35,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653795158] [2024-11-14 05:39:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:35,857 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 05:39:35,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:35,859 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:35,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (27)] Waiting until timeout for monitored process [2024-11-14 05:39:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:36,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:39:36,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:36,036 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 05:39:36,042 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 05:39:36,163 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 05:39:36,175 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 05:39:36,239 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 28 treesize of output 16 [2024-11-14 05:39:36,379 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 05:39:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:36,443 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 05:39:36,459 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:36,460 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 05:39:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-14 05:39:36,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:38,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653795158] [2024-11-14 05:39:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653795158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510590188] [2024-11-14 05:39:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:38,921 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:38,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:38,923 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:38,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-14 05:39:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:39,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:39:39,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:39,266 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 05:39:39,274 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 05:39:39,357 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 05:39:39,368 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 05:39:39,400 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 28 treesize of output 16 [2024-11-14 05:39:39,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:39,560 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 05:39:39,578 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:39,578 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 05:39:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-14 05:39:39,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:41,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1510590188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:41,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004943341] [2024-11-14 05:39:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:41,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:41,373 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:41,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 05:39:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:41,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:39:41,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:41,530 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 05:39:41,665 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 05:39:41,673 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 05:39:41,723 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 28 treesize of output 16 [2024-11-14 05:39:41,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:41,864 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 05:39:41,881 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:39:41,882 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 05:39:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-14 05:39:41,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004943341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:42,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 11 [2024-11-14 05:39:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415321608] [2024-11-14 05:39:42,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:42,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:39:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:39:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=128, Unknown=2, NotChecked=22, Total=182 [2024-11-14 05:39:42,239 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:39:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:43,643 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2024-11-14 05:39:43,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:39:43,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-14 05:39:43,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:43,645 INFO L225 Difference]: With dead ends: 98 [2024-11-14 05:39:43,645 INFO L226 Difference]: Without dead ends: 98 [2024-11-14 05:39:43,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=49, Invalid=225, Unknown=2, NotChecked=30, Total=306 [2024-11-14 05:39:43,646 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 7 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:43,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 474 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 290 Invalid, 0 Unknown, 83 Unchecked, 1.1s Time] [2024-11-14 05:39:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-14 05:39:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-11-14 05:39:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 85 states have internal predecessors, (93), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2024-11-14 05:39:43,653 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 33 [2024-11-14 05:39:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:43,653 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2024-11-14 05:39:43,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:39:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2024-11-14 05:39:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:43,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:43,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:43,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 05:39:43,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (27)] Ended with exit code 0 [2024-11-14 05:39:44,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-14 05:39:44,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:44,257 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:44,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1450623910, now seen corresponding path program 1 times [2024-11-14 05:39:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:44,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700288399] [2024-11-14 05:39:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:44,258 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 05:39:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:44,260 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:44,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (30)] Waiting until timeout for monitored process [2024-11-14 05:39:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:44,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:39:44,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:44,466 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 05:39:44,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:44,500 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 05:39:44,501 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 16 treesize of output 15 [2024-11-14 05:39:44,520 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 05:39:44,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700288399] [2024-11-14 05:39:44,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700288399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1730882920] [2024-11-14 05:39:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:44,520 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:44,522 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:44,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-14 05:39:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:44,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:39:44,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:44,862 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 05:39:44,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:44,925 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 05:39:44,925 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 16 treesize of output 15 [2024-11-14 05:39:44,953 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 05:39:44,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1730882920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900062224] [2024-11-14 05:39:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:44,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:44,956 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:44,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:39:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:45,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:39:45,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:45,132 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 05:39:45,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:45,167 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 05:39:45,168 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 16 treesize of output 15 [2024-11-14 05:39:45,192 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 05:39:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900062224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:45,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:39:45,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 5, 4, 4] total 6 [2024-11-14 05:39:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666803181] [2024-11-14 05:39:45,193 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:45,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:39:45,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:39:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:39:45,194 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:39:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:45,609 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2024-11-14 05:39:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:39:45,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-14 05:39:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:45,611 INFO L225 Difference]: With dead ends: 99 [2024-11-14 05:39:45,611 INFO L226 Difference]: Without dead ends: 99 [2024-11-14 05:39:45,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:39:45,612 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 11 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:45,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 248 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:39:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-14 05:39:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-11-14 05:39:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 71 states have (on average 1.352112676056338) internal successors, (96), 86 states have internal predecessors, (96), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2024-11-14 05:39:45,617 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 33 [2024-11-14 05:39:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:45,617 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2024-11-14 05:39:45,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:39:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2024-11-14 05:39:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 05:39:45,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:45,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:45,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:45,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-14 05:39:46,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (30)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:46,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:46,220 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:46,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1450623909, now seen corresponding path program 1 times [2024-11-14 05:39:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591574294] [2024-11-14 05:39:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:46,221 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 05:39:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:46,225 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:46,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (33)] Waiting until timeout for monitored process [2024-11-14 05:39:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:46,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:39:46,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:46,653 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 05:39:46,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:46,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:39:46,972 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 22 treesize of output 26 [2024-11-14 05:39:48,761 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 05:39:48,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591574294] [2024-11-14 05:39:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591574294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [635673513] [2024-11-14 05:39:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:48,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:39:48,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:39:48,764 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:39:48,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-14 05:39:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:49,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:39:49,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:49,199 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 05:39:49,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:49,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:39:49,337 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 22 treesize of output 26 [2024-11-14 05:39:50,019 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 05:39:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [635673513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003543522] [2024-11-14 05:39:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:50,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:39:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:39:50,021 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:39:50,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 05:39:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:50,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:39:50,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:50,306 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 05:39:50,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:50,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:39:50,419 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 22 treesize of output 26 [2024-11-14 05:39:50,906 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 05:39:50,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003543522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:39:50,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:39:50,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 19 [2024-11-14 05:39:50,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122258110] [2024-11-14 05:39:50,907 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:50,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 05:39:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 05:39:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-14 05:39:50,908 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:39:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:53,285 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2024-11-14 05:39:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:39:53,287 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-14 05:39:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:53,288 INFO L225 Difference]: With dead ends: 101 [2024-11-14 05:39:53,288 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:39:53,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-14 05:39:53,289 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 39 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:53,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 678 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:39:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:39:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-11-14 05:39:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 90 states have internal predecessors, (101), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2024-11-14 05:39:53,295 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 33 [2024-11-14 05:39:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:53,296 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2024-11-14 05:39:53,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 05:39:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2024-11-14 05:39:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:39:53,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:53,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:53,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 05:39:53,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-14 05:39:53,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (33)] Ended with exit code 0 [2024-11-14 05:39:53,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:53,899 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:53,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1814749226, now seen corresponding path program 1 times [2024-11-14 05:39:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984533797] [2024-11-14 05:39:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:53,899 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 05:39:53,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:53,902 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:53,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (36)] Waiting until timeout for monitored process [2024-11-14 05:39:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:54,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:39:54,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:54,216 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 05:39:54,216 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:54,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984533797] [2024-11-14 05:39:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984533797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:54,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:54,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 05:39:54,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486089635] [2024-11-14 05:39:54,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:54,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:39:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:39:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:39:54,218 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 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 05:39:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:54,492 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2024-11-14 05:39:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:39:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 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 35 [2024-11-14 05:39:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:54,493 INFO L225 Difference]: With dead ends: 101 [2024-11-14 05:39:54,494 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 05:39:54,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:39:54,494 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 21 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:54,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 471 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:39:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 05:39:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-11-14 05:39:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 90 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2024-11-14 05:39:54,499 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 35 [2024-11-14 05:39:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:54,499 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2024-11-14 05:39:54,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 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 05:39:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2024-11-14 05:39:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 05:39:54,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:54,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:54,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (36)] Ended with exit code 0 [2024-11-14 05:39:54,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:54,701 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:54,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:54,701 INFO L85 PathProgramCache]: Analyzing trace with hash 424093158, now seen corresponding path program 1 times [2024-11-14 05:39:54,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:54,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490701595] [2024-11-14 05:39:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:54,702 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 05:39:54,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:54,703 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:54,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (37)] Waiting until timeout for monitored process [2024-11-14 05:39:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:54,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:39:54,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:55,574 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 05:39:55,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:39:55,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490701595] [2024-11-14 05:39:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490701595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:39:55,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:39:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 05:39:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261226176] [2024-11-14 05:39:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:55,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:39:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:39:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:39:55,576 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 05:39:56,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:56,261 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-14 05:39:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:39:56,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 36 [2024-11-14 05:39:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:56,264 INFO L225 Difference]: With dead ends: 102 [2024-11-14 05:39:56,264 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 05:39:56,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:39:56,265 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 106 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:56,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 376 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:39:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 05:39:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-14 05:39:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 91 states have internal predecessors, (101), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2024-11-14 05:39:56,270 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 36 [2024-11-14 05:39:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:56,270 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2024-11-14 05:39:56,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 05:39:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2024-11-14 05:39:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:39:56,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:56,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:56,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (37)] Forceful destruction successful, exit code 0 [2024-11-14 05:39:56,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:56,472 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:56,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:56,472 INFO L85 PathProgramCache]: Analyzing trace with hash 838935507, now seen corresponding path program 1 times [2024-11-14 05:39:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120089255] [2024-11-14 05:39:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:56,473 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 05:39:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:56,475 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:56,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (38)] Waiting until timeout for monitored process [2024-11-14 05:39:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:56,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:39:56,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:56,759 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 05:39:56,953 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:39:57,015 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:39:57,015 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 21 treesize of output 20 [2024-11-14 05:39:57,040 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (_ bv1 1)))) is different from true [2024-11-14 05:39:57,074 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:39:57,075 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 05:39:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 4 not checked. [2024-11-14 05:39:57,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:39:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:39:57,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:39:57,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120089255] [2024-11-14 05:39:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120089255] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 05:39:57,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:39:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2024-11-14 05:39:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221109396] [2024-11-14 05:39:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:39:57,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 05:39:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:39:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 05:39:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=92, Unknown=2, NotChecked=38, Total=156 [2024-11-14 05:39:57,707 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:39:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:39:58,809 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2024-11-14 05:39:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:39:58,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-14 05:39:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:39:58,811 INFO L225 Difference]: With dead ends: 100 [2024-11-14 05:39:58,811 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 05:39:58,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=152, Unknown=2, NotChecked=50, Total=240 [2024-11-14 05:39:58,812 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 25 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:39:58,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 333 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:39:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 05:39:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-14 05:39:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 91 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:39:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2024-11-14 05:39:58,817 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 39 [2024-11-14 05:39:58,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:39:58,818 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2024-11-14 05:39:58,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:39:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2024-11-14 05:39:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:39:58,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:39:58,819 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:39:58,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (38)] Ended with exit code 0 [2024-11-14 05:39:59,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:59,023 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:39:59,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:39:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 838935508, now seen corresponding path program 1 times [2024-11-14 05:39:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:39:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179536702] [2024-11-14 05:39:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:39:59,024 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 05:39:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:39:59,026 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:39:59,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (39)] Waiting until timeout for monitored process [2024-11-14 05:39:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:39:59,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 05:39:59,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:39:59,304 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 05:39:59,314 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 05:39:59,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:39:59,826 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 05:39:59,867 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 05:39:59,867 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 27 [2024-11-14 05:40:00,091 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:40:00,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:40:00,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 05:40:00,195 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-14 05:40:00,196 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 20 treesize of output 22 [2024-11-14 05:40:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:00,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:03,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:40:03,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179536702] [2024-11-14 05:40:03,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179536702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:03,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213907642] [2024-11-14 05:40:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:03,194 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:40:03,196 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:40:03,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-14 05:40:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:03,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 05:40:03,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:03,636 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 05:40:03,644 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 05:40:03,810 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:40:03,927 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:40:03,928 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 21 treesize of output 20 [2024-11-14 05:40:03,934 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 05:40:04,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:40:04,054 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 05:40:04,071 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:40:04,071 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 05:40:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:04,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213907642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:04,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789852708] [2024-11-14 05:40:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:04,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:04,609 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:04,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-14 05:40:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:04,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 05:40:04,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:04,806 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 05:40:05,463 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 05:40:05,463 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 27 [2024-11-14 05:40:05,483 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 05:40:05,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:40:05,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 05:40:05,867 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-14 05:40:05,867 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 20 treesize of output 22 [2024-11-14 05:40:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:05,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:06,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789852708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:06,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:40:06,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 19 [2024-11-14 05:40:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251613967] [2024-11-14 05:40:06,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:06,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 05:40:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:40:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 05:40:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=365, Unknown=2, NotChecked=78, Total=506 [2024-11-14 05:40:06,491 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:40:10,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:40:13,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:40:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:13,194 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2024-11-14 05:40:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:40:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2024-11-14 05:40:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:13,196 INFO L225 Difference]: With dead ends: 100 [2024-11-14 05:40:13,196 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 05:40:13,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=79, Invalid=479, Unknown=2, NotChecked=90, Total=650 [2024-11-14 05:40:13,197 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 67 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:13,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 379 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 443 Invalid, 2 Unknown, 152 Unchecked, 6.1s Time] [2024-11-14 05:40:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 05:40:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-14 05:40:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 91 states have internal predecessors, (99), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:40:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2024-11-14 05:40:13,202 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 39 [2024-11-14 05:40:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:13,203 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2024-11-14 05:40:13,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:40:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2024-11-14 05:40:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:40:13,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:13,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:13,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-11-14 05:40:13,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (39)] Ended with exit code 0 [2024-11-14 05:40:13,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-14 05:40:13,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:13,805 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:40:13,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1634386081, now seen corresponding path program 1 times [2024-11-14 05:40:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:40:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172409093] [2024-11-14 05:40:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:13,806 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 05:40:13,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:40:13,809 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (42)] Waiting until timeout for monitored process [2024-11-14 05:40:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:14,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:40:14,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:14,889 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 05:40:14,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:15,448 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 05:40:15,448 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 24 treesize of output 23 [2024-11-14 05:40:15,511 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 05:40:15,512 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 20 treesize of output 12 [2024-11-14 05:40:15,599 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 05:40:15,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:40:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172409093] [2024-11-14 05:40:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172409093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1705968942] [2024-11-14 05:40:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:15,600 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:40:15,602 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:40:15,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2024-11-14 05:40:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:16,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 05:40:16,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:16,964 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 05:40:16,986 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 05:40:17,768 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 05:40:17,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:18,341 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 05:40:18,341 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 59 treesize of output 58 [2024-11-14 05:40:18,395 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 05:40:18,396 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 70 treesize of output 62 [2024-11-14 05:40:18,518 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 05:40:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1705968942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080702230] [2024-11-14 05:40:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:18,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:18,521 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:18,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-14 05:40:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:18,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:40:18,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:18,993 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 05:40:18,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:19,298 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-14 05:40:19,298 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 24 treesize of output 23 [2024-11-14 05:40:19,363 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-14 05:40:19,364 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 20 treesize of output 12 [2024-11-14 05:40:19,444 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 05:40:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080702230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:19,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:40:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 16, 11, 10, 10] total 24 [2024-11-14 05:40:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240481068] [2024-11-14 05:40:19,445 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:19,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 05:40:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:40:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 05:40:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:40:19,447 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:40:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:23,142 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2024-11-14 05:40:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:40:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-11-14 05:40:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:23,145 INFO L225 Difference]: With dead ends: 111 [2024-11-14 05:40:23,145 INFO L226 Difference]: Without dead ends: 111 [2024-11-14 05:40:23,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-11-14 05:40:23,145 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 28 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:23,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 932 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 05:40:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-14 05:40:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2024-11-14 05:40:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 101 states have internal predecessors, (110), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:40:23,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2024-11-14 05:40:23,151 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 39 [2024-11-14 05:40:23,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:23,152 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2024-11-14 05:40:23,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:40:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2024-11-14 05:40:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 05:40:23,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:23,153 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:23,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-14 05:40:23,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (42)] Ended with exit code 0 [2024-11-14 05:40:23,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2024-11-14 05:40:23,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:23,755 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:40:23,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1269604099, now seen corresponding path program 1 times [2024-11-14 05:40:23,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:40:23,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007539293] [2024-11-14 05:40:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:23,756 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 05:40:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:40:23,758 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:23,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (45)] Waiting until timeout for monitored process [2024-11-14 05:40:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:24,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:40:24,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:24,026 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 05:40:24,153 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 05:40:24,216 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 19 treesize of output 11 [2024-11-14 05:40:24,412 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (_ bv1 1)))) is different from true [2024-11-14 05:40:24,485 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:40:24,485 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 05:40:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:24,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:40:25,189 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:40:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007539293] [2024-11-14 05:40:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007539293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10366676] [2024-11-14 05:40:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:25,189 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:40:25,194 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:40:25,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-14 05:40:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:25,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:40:25,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:25,691 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 05:40:25,738 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 05:40:25,762 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 19 treesize of output 11 [2024-11-14 05:40:25,914 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 05:40:25,914 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 05:40:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:26,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:40:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10366676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403679602] [2024-11-14 05:40:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:26,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:26,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:26,717 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:26,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-14 05:40:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:26,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:40:26,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:26,951 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 05:40:27,032 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 05:40:27,064 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 19 treesize of output 11 [2024-11-14 05:40:27,148 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:40:27,312 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:40:27,313 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 21 treesize of output 20 [2024-11-14 05:40:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:27,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:40:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403679602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:27,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:40:27,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 8, 9, 8] total 11 [2024-11-14 05:40:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877579017] [2024-11-14 05:40:27,897 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:27,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:40:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:40:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:40:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=74, Unknown=2, NotChecked=34, Total=132 [2024-11-14 05:40:27,899 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:40:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:29,629 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2024-11-14 05:40:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:40:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-11-14 05:40:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:29,631 INFO L225 Difference]: With dead ends: 111 [2024-11-14 05:40:29,631 INFO L226 Difference]: Without dead ends: 111 [2024-11-14 05:40:29,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 226 SyntacticMatches, 10 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=150, Unknown=2, NotChecked=50, Total=240 [2024-11-14 05:40:29,634 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 8 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:29,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 402 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 160 Unchecked, 1.4s Time] [2024-11-14 05:40:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-14 05:40:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2024-11-14 05:40:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 100 states have internal predecessors, (109), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 05:40:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 121 transitions. [2024-11-14 05:40:29,645 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 121 transitions. Word has length 42 [2024-11-14 05:40:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:29,645 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 121 transitions. [2024-11-14 05:40:29,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 05:40:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 121 transitions. [2024-11-14 05:40:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 05:40:29,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:29,647 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:29,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (45)] Ended with exit code 0 [2024-11-14 05:40:29,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2024-11-14 05:40:30,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-14 05:40:30,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:30,248 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:40:30,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1269604100, now seen corresponding path program 1 times [2024-11-14 05:40:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:40:30,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341071147] [2024-11-14 05:40:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:30,249 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 05:40:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:40:30,254 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:30,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (48)] Waiting until timeout for monitored process [2024-11-14 05:40:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:30,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:40:30,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:30,542 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 05:40:30,716 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 05:40:30,725 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 05:40:30,846 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 17 treesize of output 9 [2024-11-14 05:40:31,201 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (_ bv8 64)) |c_#length|)) is different from true [2024-11-14 05:40:31,305 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 05:40:31,305 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 12 treesize of output 14 [2024-11-14 05:40:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:31,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:32,201 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:40:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341071147] [2024-11-14 05:40:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341071147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1329261736] [2024-11-14 05:40:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:32,201 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:32,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:40:32,203 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:40:32,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2024-11-14 05:40:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:32,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:40:32,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:32,759 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 05:40:32,778 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 05:40:33,154 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 05:40:33,170 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 05:40:33,331 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 28 treesize of output 16 [2024-11-14 05:40:33,756 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base)))) is different from true [2024-11-14 05:40:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:40:33,832 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 05:40:33,871 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:40:33,871 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 05:40:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:33,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:34,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1329261736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251685472] [2024-11-14 05:40:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:34,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:34,383 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:34,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-14 05:40:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:34,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:40:34,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:34,571 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 05:40:34,585 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 05:40:34,692 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 05:40:34,708 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 05:40:34,763 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 28 treesize of output 16 [2024-11-14 05:40:34,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:40:34,964 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 05:40:34,996 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:40:34,996 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 05:40:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-14 05:40:35,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251685472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:37,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:40:37,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 17 [2024-11-14 05:40:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743696942] [2024-11-14 05:40:37,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:37,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 05:40:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:40:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 05:40:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=296, Unknown=2, NotChecked=70, Total=420 [2024-11-14 05:40:37,513 INFO L87 Difference]: Start difference. First operand 109 states and 121 transitions. Second operand has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:40:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:39,240 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2024-11-14 05:40:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:40:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2024-11-14 05:40:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:39,241 INFO L225 Difference]: With dead ends: 109 [2024-11-14 05:40:39,241 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 05:40:39,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=76, Invalid=435, Unknown=3, NotChecked=86, Total=600 [2024-11-14 05:40:39,242 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:39,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 554 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 258 Invalid, 0 Unknown, 160 Unchecked, 1.3s Time] [2024-11-14 05:40:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 05:40:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2024-11-14 05:40:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 93 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:40:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2024-11-14 05:40:39,247 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 42 [2024-11-14 05:40:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:39,247 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2024-11-14 05:40:39,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 14 states have internal predecessors, (48), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:40:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2024-11-14 05:40:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:40:39,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:39,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:39,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2024-11-14 05:40:39,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (48)] Forceful destruction successful, exit code 0 [2024-11-14 05:40:39,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-14 05:40:39,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:39,849 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:40:39,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1312962031, now seen corresponding path program 1 times [2024-11-14 05:40:39,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:40:39,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583398141] [2024-11-14 05:40:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:39,853 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 05:40:39,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:40:39,856 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:39,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (51)] Waiting until timeout for monitored process [2024-11-14 05:40:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:40,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:40:40,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:40,093 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 05:40:40,649 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 05:40:40,649 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 27 [2024-11-14 05:40:41,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 18 [2024-11-14 05:40:41,678 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 05:40:41,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:43,505 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 05:40:43,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:40:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583398141] [2024-11-14 05:40:43,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583398141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:43,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1266382887] [2024-11-14 05:40:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:43,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:40:43,508 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:40:43,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2024-11-14 05:40:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:43,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:40:43,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:43,889 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 05:40:44,110 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 05:40:44,110 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 27 [2024-11-14 05:40:44,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 18 [2024-11-14 05:40:44,501 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 05:40:44,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:45,587 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 05:40:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1266382887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962063598] [2024-11-14 05:40:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:45,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:45,591 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:45,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-14 05:40:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:45,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:40:45,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:45,968 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 05:40:45,968 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 27 [2024-11-14 05:40:46,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 18 [2024-11-14 05:40:46,379 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 05:40:46,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:47,424 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 05:40:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962063598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:47,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:40:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 25 [2024-11-14 05:40:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360075514] [2024-11-14 05:40:47,425 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:47,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:40:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:40:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:40:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:40:47,426 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 26 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:40:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:51,037 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2024-11-14 05:40:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:40:51,038 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2024-11-14 05:40:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:51,039 INFO L225 Difference]: With dead ends: 114 [2024-11-14 05:40:51,039 INFO L226 Difference]: Without dead ends: 114 [2024-11-14 05:40:51,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 208 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-14 05:40:51,040 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 39 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:51,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 503 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 05:40:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-14 05:40:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2024-11-14 05:40:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.255813953488372) internal successors, (108), 97 states have internal predecessors, (108), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:40:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2024-11-14 05:40:51,046 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 41 [2024-11-14 05:40:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:51,046 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2024-11-14 05:40:51,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:40:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2024-11-14 05:40:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:40:51,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:51,047 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:51,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-14 05:40:51,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (51)] Forceful destruction successful, exit code 0 [2024-11-14 05:40:51,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (52)] Ended with exit code 0 [2024-11-14 05:40:51,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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=3,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:40:51,648 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:40:51,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1312962032, now seen corresponding path program 1 times [2024-11-14 05:40:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:40:51,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098664119] [2024-11-14 05:40:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:51,649 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 05:40:51,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:40:51,651 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:51,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (54)] Waiting until timeout for monitored process [2024-11-14 05:40:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:51,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:40:51,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:51,863 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 05:40:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:40:52,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:40:52,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:40:52,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098664119] [2024-11-14 05:40:52,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098664119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:40:52,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:40:52,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:40:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030252680] [2024-11-14 05:40:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:40:52,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:40:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:40:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:40:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:40:52,467 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 05:40:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:53,610 INFO L93 Difference]: Finished difference Result 156 states and 178 transitions. [2024-11-14 05:40:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:40:53,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 41 [2024-11-14 05:40:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:53,612 INFO L225 Difference]: With dead ends: 156 [2024-11-14 05:40:53,612 INFO L226 Difference]: Without dead ends: 156 [2024-11-14 05:40:53,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:40:53,613 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 10 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:53,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 392 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:40:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-14 05:40:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2024-11-14 05:40:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 129 states have (on average 1.2868217054263567) internal successors, (166), 140 states have internal predecessors, (166), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 05:40:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2024-11-14 05:40:53,621 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 41 [2024-11-14 05:40:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:53,621 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2024-11-14 05:40:53,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 05:40:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2024-11-14 05:40:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 05:40:53,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:53,622 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:53,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (54)] Ended with exit code 0 [2024-11-14 05:40:53,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:53,823 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-14 05:40:53,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1114255447, now seen corresponding path program 1 times [2024-11-14 05:40:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:40:53,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738749603] [2024-11-14 05:40:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:53,824 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 05:40:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:40:53,825 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 05:40:53,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87fa2d81-87f0-47df-913c-472263d33d61/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 (55)] Waiting until timeout for monitored process [2024-11-14 05:40:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:54,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-14 05:40:54,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:54,089 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 05:40:54,136 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 05:40:54,157 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 05:40:54,219 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 23 treesize of output 11 [2024-11-14 05:40:54,235 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 19 treesize of output 18 [2024-11-14 05:40:55,532 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:40:55,532 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 05:40:55,555 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 16 treesize of output 11 [2024-11-14 05:40:55,572 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 23 treesize of output 16 [2024-11-14 05:40:56,133 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