./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-middle-shared.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/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_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-middle-shared.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/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_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/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 003ead3201cb38ecc17dca4c0dd7fb7b12eace11010ba9f6077aefef97bddb9b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:59:53,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:59:53,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2024-11-14 02:59:53,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:59:53,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:59:53,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:59:53,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:59:53,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:59:53,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:59:53,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:59:53,661 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:59:53,663 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:59:53,663 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:59:53,663 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:59:53,663 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:59:53,663 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:59:53,663 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:59:53,663 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:59:53,664 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:59:53,664 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:59:53,664 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:59:53,664 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:59:53,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:59:53,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:59:53,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:59:53,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:59:53,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:59:53,666 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:59:53,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:59:53,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:59:53,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:59:53,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:59:53,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:59:53,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:59:53,668 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:59:53,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:59:53,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:59:53,669 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:59:53,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:59:53,669 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_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/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 -> 003ead3201cb38ecc17dca4c0dd7fb7b12eace11010ba9f6077aefef97bddb9b [2024-11-14 02:59:54,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:59:54,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:59:54,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:59:54,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:59:54,110 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:59:54,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/memsafety-broom/sll-middle-shared.i Unable to find full path for "g++" [2024-11-14 02:59:56,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:59:56,932 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:59:56,935 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/sv-benchmarks/c/memsafety-broom/sll-middle-shared.i [2024-11-14 02:59:56,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/data/148cb5a94/ae40285657cc4537b87e6ba8104b2b82/FLAG6dfb941b8 [2024-11-14 02:59:56,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/data/148cb5a94/ae40285657cc4537b87e6ba8104b2b82 [2024-11-14 02:59:57,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:59:57,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:59:57,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:59:57,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:59:57,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:59:57,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:59:56" (1/1) ... [2024-11-14 02:59:57,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e139fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57, skipping insertion in model container [2024-11-14 02:59:57,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:59:56" (1/1) ... [2024-11-14 02:59:57,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:59:57,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:59:57,526 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:59:57,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:59:57,652 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:59:57,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57 WrapperNode [2024-11-14 02:59:57,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:59:57,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:59:57,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:59:57,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:59:57,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,700 INFO L138 Inliner]: procedures = 121, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2024-11-14 02:59:57,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:59:57,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:59:57,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:59:57,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:59:57,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:59:57,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:59:57,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:59:57,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:59:57,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (1/1) ... [2024-11-14 02:59:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:59:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:57,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:59:57,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:59:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 02:59:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-14 02:59:57,809 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-14 02:59:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:59:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:59:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:59:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:59:57,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:59:57,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:59:57,959 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:59:57,961 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:59:58,455 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-14 02:59:58,458 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:59:58,567 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:59:58,567 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 02:59:58,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:59:58 BoogieIcfgContainer [2024-11-14 02:59:58,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:59:58,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:59:58,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:59:58,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:59:58,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:59:56" (1/3) ... [2024-11-14 02:59:58,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5cb468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:59:58, skipping insertion in model container [2024-11-14 02:59:58,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:59:57" (2/3) ... [2024-11-14 02:59:58,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5cb468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:59:58, skipping insertion in model container [2024-11-14 02:59:58,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:59:58" (3/3) ... [2024-11-14 02:59:58,582 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-middle-shared.i [2024-11-14 02:59:58,603 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:59:58,605 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-middle-shared.i that has 2 procedures, 84 locations, 1 initial locations, 3 loop locations, and 44 error locations. [2024-11-14 02:59:58,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:59:58,698 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;@1d1c0a71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:59:58,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-14 02:59:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 36 states have (on average 2.361111111111111) internal successors, (85), 80 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:59:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:59:58,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:58,715 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:59:58,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 02:59:58,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash 5494039, now seen corresponding path program 1 times [2024-11-14 02:59:58,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408625226] [2024-11-14 02:59:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:59:59,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408625226] [2024-11-14 02:59:59,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408625226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:59,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:59,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:59:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306889593] [2024-11-14 02:59:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:59,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:59:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:59:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:59:59,102 INFO L87 Difference]: Start difference. First operand has 84 states, 36 states have (on average 2.361111111111111) internal successors, (85), 80 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:59:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:59,291 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2024-11-14 02:59:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:59:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 02:59:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:59,303 INFO L225 Difference]: With dead ends: 83 [2024-11-14 02:59:59,303 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 02:59:59,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:59:59,311 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:59,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:59:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 02:59:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 02:59:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 78 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:59:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2024-11-14 02:59:59,358 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 4 [2024-11-14 02:59:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:59,358 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2024-11-14 02:59:59,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:59:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2024-11-14 02:59:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:59:59,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:59,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:59:59,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:59:59,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 02:59:59,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash 5494040, now seen corresponding path program 1 times [2024-11-14 02:59:59,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:59,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691810771] [2024-11-14 02:59:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:59,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:59:59,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691810771] [2024-11-14 02:59:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691810771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:59,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:59:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132459170] [2024-11-14 02:59:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:59,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:59:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:59:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:59:59,509 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:59:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:59,645 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2024-11-14 02:59:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:59:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 02:59:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:59,647 INFO L225 Difference]: With dead ends: 81 [2024-11-14 02:59:59,647 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 02:59:59,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:59:59,649 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:59,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:59:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 02:59:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-14 02:59:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 36 states have (on average 2.25) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:59:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-11-14 02:59:59,658 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 4 [2024-11-14 02:59:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:59,658 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-11-14 02:59:59,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:59:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-11-14 02:59:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 02:59:59,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:59,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:59,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:59:59,659 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 02:59:59,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 468462281, now seen corresponding path program 1 times [2024-11-14 02:59:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165092592] [2024-11-14 02:59:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:59:59,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:59,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165092592] [2024-11-14 02:59:59,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165092592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:59,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:59:59,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761260884] [2024-11-14 02:59:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:59,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:59:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:59:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:59:59,844 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:00,010 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-11-14 03:00:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:00:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-11-14 03:00:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:00,018 INFO L225 Difference]: With dead ends: 84 [2024-11-14 03:00:00,018 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 03:00:00,019 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 03:00:00,020 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:00,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:00:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 03:00:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-14 03:00:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2024-11-14 03:00:00,036 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 7 [2024-11-14 03:00:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:00,036 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2024-11-14 03:00:00,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:00,040 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2024-11-14 03:00:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:00:00,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:00,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:00,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:00:00,042 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:00,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash 468462282, now seen corresponding path program 1 times [2024-11-14 03:00:00,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:00,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327062456] [2024-11-14 03:00:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:00,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327062456] [2024-11-14 03:00:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327062456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:00,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:00:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737887067] [2024-11-14 03:00:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:00,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:00:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:00:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:00:00,255 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:00,399 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2024-11-14 03:00:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:00:00,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-11-14 03:00:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:00,400 INFO L225 Difference]: With dead ends: 83 [2024-11-14 03:00:00,400 INFO L226 Difference]: Without dead ends: 83 [2024-11-14 03:00:00,401 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 03:00:00,401 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:00,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:00:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-14 03:00:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-11-14 03:00:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-11-14 03:00:00,416 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 7 [2024-11-14 03:00:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:00,416 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-11-14 03:00:00,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-11-14 03:00:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:00:00,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:00,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:00,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:00:00,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:00,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1637433210, now seen corresponding path program 1 times [2024-11-14 03:00:00,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:00,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22666101] [2024-11-14 03:00:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:00,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:00,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:00,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22666101] [2024-11-14 03:00:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22666101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:00,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:00:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006214428] [2024-11-14 03:00:00,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:00,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:00:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:00:00,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:00:00,572 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:00,711 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2024-11-14 03:00:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:00:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-14 03:00:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:00,712 INFO L225 Difference]: With dead ends: 82 [2024-11-14 03:00:00,712 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 03:00:00,713 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 03:00:00,714 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:00,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:00:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 03:00:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2024-11-14 03:00:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-11-14 03:00:00,731 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 8 [2024-11-14 03:00:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:00,731 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-11-14 03:00:00,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-11-14 03:00:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:00:00,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:00,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:00,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:00:00,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:00,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1637433211, now seen corresponding path program 1 times [2024-11-14 03:00:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253844032] [2024-11-14 03:00:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:00,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253844032] [2024-11-14 03:00:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253844032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:00,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:00,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:00:00,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126048327] [2024-11-14 03:00:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:00,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:00:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:00:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:00:00,935 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:01,044 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2024-11-14 03:00:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:00:01,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-14 03:00:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:01,046 INFO L225 Difference]: With dead ends: 81 [2024-11-14 03:00:01,046 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 03:00:01,047 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 03:00:01,047 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 10 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:01,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:00:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 03:00:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2024-11-14 03:00:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 36 states have (on average 2.138888888888889) internal successors, (77), 73 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2024-11-14 03:00:01,054 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 8 [2024-11-14 03:00:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:01,054 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2024-11-14 03:00:01,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2024-11-14 03:00:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:00:01,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:01,055 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:01,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:00:01,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:01,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash -779174085, now seen corresponding path program 1 times [2024-11-14 03:00:01,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:01,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149532303] [2024-11-14 03:00:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:01,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149532303] [2024-11-14 03:00:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149532303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:01,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:01,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:00:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327031088] [2024-11-14 03:00:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:01,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:00:01,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:00:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:01,407 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:01,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:01,688 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2024-11-14 03:00:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:00:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:00:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:01,690 INFO L225 Difference]: With dead ends: 76 [2024-11-14 03:00:01,692 INFO L226 Difference]: Without dead ends: 76 [2024-11-14 03:00:01,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:01,694 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:01,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 163 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:00:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-14 03:00:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2024-11-14 03:00:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 36 states have (on average 2.0) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-14 03:00:01,711 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 9 [2024-11-14 03:00:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:01,711 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-14 03:00:01,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-14 03:00:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:00:01,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:01,712 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:01,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:00:01,713 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:01,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -779174084, now seen corresponding path program 1 times [2024-11-14 03:00:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353094591] [2024-11-14 03:00:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:01,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:02,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:02,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353094591] [2024-11-14 03:00:02,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353094591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:02,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:02,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:00:02,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419257468] [2024-11-14 03:00:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:02,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:00:02,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:00:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:02,230 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:02,598 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-14 03:00:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:00:02,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:00:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:02,601 INFO L225 Difference]: With dead ends: 74 [2024-11-14 03:00:02,602 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 03:00:02,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:02,603 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:02,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 172 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:00:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 03:00:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2024-11-14 03:00:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-14 03:00:02,614 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 9 [2024-11-14 03:00:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:02,614 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-14 03:00:02,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-14 03:00:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:00:02,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:02,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:02,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 03:00:02,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:02,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -661495851, now seen corresponding path program 1 times [2024-11-14 03:00:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729170981] [2024-11-14 03:00:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:02,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729170981] [2024-11-14 03:00:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729170981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:00:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084653246] [2024-11-14 03:00:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:02,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:00:02,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:00:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:00:02,832 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:03,084 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2024-11-14 03:00:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:00:03,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-14 03:00:03,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:03,085 INFO L225 Difference]: With dead ends: 91 [2024-11-14 03:00:03,086 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 03:00:03,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:00:03,087 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 41 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:03,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 138 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:00:03,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 03:00:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2024-11-14 03:00:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.9183673469387754) internal successors, (94), 77 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-14 03:00:03,102 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 15 [2024-11-14 03:00:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:03,102 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-14 03:00:03,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-14 03:00:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:00:03,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:03,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:03,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 03:00:03,107 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:03,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash -661495850, now seen corresponding path program 1 times [2024-11-14 03:00:03,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:03,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861166447] [2024-11-14 03:00:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:03,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:03,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861166447] [2024-11-14 03:00:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861166447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:03,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:03,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:00:03,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125604831] [2024-11-14 03:00:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:03,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:00:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:00:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:00:03,480 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:03,786 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2024-11-14 03:00:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:00:03,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-14 03:00:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:03,788 INFO L225 Difference]: With dead ends: 91 [2024-11-14 03:00:03,788 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 03:00:03,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:00:03,790 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 16 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:03,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:00:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 03:00:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-14 03:00:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 82 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-11-14 03:00:03,801 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 15 [2024-11-14 03:00:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:03,802 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-11-14 03:00:03,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-11-14 03:00:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:00:03,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:03,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:03,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 03:00:03,803 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:03,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash 6426928, now seen corresponding path program 1 times [2024-11-14 03:00:03,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:03,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599690947] [2024-11-14 03:00:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:03,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:04,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:04,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599690947] [2024-11-14 03:00:04,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599690947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:04,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:04,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:00:04,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867809194] [2024-11-14 03:00:04,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:04,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:00:04,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:00:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:00:04,096 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 03:00:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:04,358 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2024-11-14 03:00:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:00:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 17 [2024-11-14 03:00:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:04,359 INFO L225 Difference]: With dead ends: 87 [2024-11-14 03:00:04,359 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:00:04,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:04,360 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:04,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 127 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:00:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:00:04,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 03:00:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.8333333333333333) internal successors, (99), 82 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2024-11-14 03:00:04,365 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 17 [2024-11-14 03:00:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:04,366 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2024-11-14 03:00:04,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 03:00:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2024-11-14 03:00:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:00:04,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:04,367 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:04,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 03:00:04,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:04,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash 6426929, now seen corresponding path program 1 times [2024-11-14 03:00:04,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027634944] [2024-11-14 03:00:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:04,947 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 03:00:04,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027634944] [2024-11-14 03:00:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027634944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:00:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10707462] [2024-11-14 03:00:04,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:04,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:04,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:04,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:00:04,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:00:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:05,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:00:05,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:00:05,309 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 03:00:05,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:00:05,382 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 16 treesize of output 11 [2024-11-14 03:00:05,401 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:00:05,402 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 03:00:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:05,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:00:05,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10707462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:05,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:00:05,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2024-11-14 03:00:05,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037129076] [2024-11-14 03:00:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:05,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:00:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:00:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240 [2024-11-14 03:00:05,436 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 03:00:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:05,700 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2024-11-14 03:00:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:00:05,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 17 [2024-11-14 03:00:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:05,702 INFO L225 Difference]: With dead ends: 91 [2024-11-14 03:00:05,702 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 03:00:05,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240 [2024-11-14 03:00:05,703 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:05,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 101 Unchecked, 0.2s Time] [2024-11-14 03:00:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 03:00:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-14 03:00:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 82 states have internal predecessors, (95), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2024-11-14 03:00:05,711 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 17 [2024-11-14 03:00:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:05,711 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2024-11-14 03:00:05,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 03:00:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2024-11-14 03:00:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:00:05,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:05,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:05,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:00:05,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:05,914 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:05,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 968551278, now seen corresponding path program 1 times [2024-11-14 03:00:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:05,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206865300] [2024-11-14 03:00:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:06,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:06,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206865300] [2024-11-14 03:00:06,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206865300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:06,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:06,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:00:06,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128261219] [2024-11-14 03:00:06,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:06,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:00:06,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:06,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:00:06,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:06,084 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:06,238 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2024-11-14 03:00:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:00:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-14 03:00:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:06,239 INFO L225 Difference]: With dead ends: 91 [2024-11-14 03:00:06,239 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 03:00:06,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:06,240 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:06,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 307 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:00:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 03:00:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2024-11-14 03:00:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 55 states have (on average 1.709090909090909) internal successors, (94), 83 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2024-11-14 03:00:06,249 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 16 [2024-11-14 03:00:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:06,251 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2024-11-14 03:00:06,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2024-11-14 03:00:06,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:00:06,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:06,252 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:06,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 03:00:06,252 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:06,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1881418435, now seen corresponding path program 1 times [2024-11-14 03:00:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518799971] [2024-11-14 03:00:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:00:06,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:06,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518799971] [2024-11-14 03:00:06,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518799971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:06,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:06,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:00:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012502228] [2024-11-14 03:00:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:06,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:00:06,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:06,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:00:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:00:06,492 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 03:00:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:06,716 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2024-11-14 03:00:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:00:06,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 19 [2024-11-14 03:00:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:06,718 INFO L225 Difference]: With dead ends: 87 [2024-11-14 03:00:06,718 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:00:06,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:06,719 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:06,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 173 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:00:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:00:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 03:00:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 82 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2024-11-14 03:00:06,723 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 19 [2024-11-14 03:00:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:06,723 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2024-11-14 03:00:06,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 03:00:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2024-11-14 03:00:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:00:06,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:06,724 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:06,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 03:00:06,724 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:06,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1881418436, now seen corresponding path program 1 times [2024-11-14 03:00:06,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:06,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317651230] [2024-11-14 03:00:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:06,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:00:07,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317651230] [2024-11-14 03:00:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317651230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:07,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:07,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:00:07,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794611102] [2024-11-14 03:00:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:07,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:00:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:00:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:07,140 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 03:00:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:07,415 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2024-11-14 03:00:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:00:07,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 19 [2024-11-14 03:00:07,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:07,416 INFO L225 Difference]: With dead ends: 86 [2024-11-14 03:00:07,417 INFO L226 Difference]: Without dead ends: 86 [2024-11-14 03:00:07,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:00:07,418 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 3 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:07,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 221 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:00:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-14 03:00:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-14 03:00:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2024-11-14 03:00:07,423 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 19 [2024-11-14 03:00:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:07,423 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2024-11-14 03:00:07,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 03:00:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2024-11-14 03:00:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:00:07,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:07,424 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:07,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 03:00:07,425 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:07,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2042805063, now seen corresponding path program 1 times [2024-11-14 03:00:07,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:07,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004080119] [2024-11-14 03:00:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:08,595 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 03:00:08,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004080119] [2024-11-14 03:00:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004080119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:00:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005578916] [2024-11-14 03:00:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:08,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:08,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:00:08,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:00:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:08,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-14 03:00:08,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:00:08,780 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 03:00:08,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 03:00:08,833 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 13 treesize of output 9 [2024-11-14 03:00:08,980 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:00:08,980 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 03:00:09,108 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 03:00:09,117 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 03:00:09,135 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 03:00:09,217 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 03:00:09,217 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 18 treesize of output 17 [2024-11-14 03:00:09,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:00:09,264 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 03:00:09,265 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 18 treesize of output 17 [2024-11-14 03:00:09,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:00:09,386 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 17 [2024-11-14 03:00:09,409 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 17 [2024-11-14 03:00:09,472 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 39 treesize of output 23 [2024-11-14 03:00:09,489 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 39 treesize of output 23 [2024-11-14 03:00:09,515 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-14 03:00:09,515 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 19 [2024-11-14 03:00:09,759 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 03:00:09,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:00:10,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-14 03:00:10,437 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 16 |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_20| Int)) (or (= |v_ULTIMATE.start_create_~data2~0#1.base_20| |c_ULTIMATE.start_create_~now~0#1.base|) (forall ((v_ArrVal_533 Int) (|ULTIMATE.start_create_~data2~0#1.offset| Int) (v_ArrVal_527 (Array Int Int)) (v_ArrVal_530 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~data1~0#1.base| v_ArrVal_527) |v_ULTIMATE.start_create_~data2~0#1.base_20| v_ArrVal_530))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_533) .cse1 |ULTIMATE.start_create_~data2~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 0)))) (or (and (forall ((v_ArrVal_533 Int) (|ULTIMATE.start_create_~data2~0#1.offset| Int) (v_ArrVal_527 (Array Int Int)) (|v_ULTIMATE.start_create_~data2~0#1.base_20| Int) (v_ArrVal_530 (Array Int Int))) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_~data1~0#1.base| v_ArrVal_527) |v_ULTIMATE.start_create_~data2~0#1.base_20| v_ArrVal_530))) (store .cse3 |c_ULTIMATE.start_create_~now~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_533) .cse1 |ULTIMATE.start_create_~data2~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_528 (Array Int Int)) (v_ArrVal_529 (Array Int Int)) (|v_ULTIMATE.start_create_~data2~0#1.base_20| Int) (v_ArrVal_534 Int)) (= (select (select (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~data1~0#1.base| v_ArrVal_528) |v_ULTIMATE.start_create_~data2~0#1.base_20| v_ArrVal_529))) (store .cse4 |c_ULTIMATE.start_create_~now~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_534) .cse1 |v_ULTIMATE.start_create_~data2~0#1.base_20|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 0))) (< 0 (+ 20 |c_ULTIMATE.start_create_~now~0#1.offset|))) (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_20| Int)) (or (forall ((v_ArrVal_528 (Array Int Int)) (v_ArrVal_529 (Array Int Int)) (v_ArrVal_534 Int)) (= (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~data1~0#1.base| v_ArrVal_528) |v_ULTIMATE.start_create_~data2~0#1.base_20| v_ArrVal_529))) (store .cse5 |c_ULTIMATE.start_create_~now~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| v_ArrVal_534) .cse1 |v_ULTIMATE.start_create_~data2~0#1.base_20|))) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 0)) (= |v_ULTIMATE.start_create_~data2~0#1.base_20| |c_ULTIMATE.start_create_~now~0#1.base|))))) is different from false [2024-11-14 03:00:11,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:00:11,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-14 03:00:11,274 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:00:11,278 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 36 treesize of output 24 [2024-11-14 03:00:11,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:00:11,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:00:11,303 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 25 treesize of output 26 [2024-11-14 03:00:11,307 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:00:11,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-14 03:00:11,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:00:11,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:00:11,333 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 25 treesize of output 26 [2024-11-14 03:00:11,338 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:00:11,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-14 03:00:11,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 03:00:11,362 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-14 03:00:11,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 1 [2024-11-14 03:00:11,436 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 03:00:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005578916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:00:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495606954] [2024-11-14 03:00:11,462 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-14 03:00:11,462 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:00:11,467 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:00:11,474 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:00:11,474 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:00:16,485 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:00:16,498 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:00:34,236 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2859#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~l~0#1.offset| 0) (exists ((|v_ULTIMATE.start_loop_~x#1.base_33| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_loop_~x#1.base_33|) 1)) (or (not (= |v_ULTIMATE.start_loop_~x#1.base_33| 0)) (not (= |ULTIMATE.start_loop_~x#1.offset| 0))))))' at error location [2024-11-14 03:00:34,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:00:34,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:00:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 29 [2024-11-14 03:00:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57142693] [2024-11-14 03:00:34,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:00:34,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 03:00:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 03:00:34,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1687, Unknown=10, NotChecked=84, Total=1980 [2024-11-14 03:00:34,242 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 29 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:00:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:35,796 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2024-11-14 03:00:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:00:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-11-14 03:00:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:35,798 INFO L225 Difference]: With dead ends: 87 [2024-11-14 03:00:35,798 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:00:35,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=246, Invalid=2004, Unknown=10, NotChecked=92, Total=2352 [2024-11-14 03:00:35,800 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:35,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 656 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 537 Invalid, 0 Unknown, 39 Unchecked, 1.1s Time] [2024-11-14 03:00:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:00:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 03:00:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.625) internal successors, (91), 82 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2024-11-14 03:00:35,806 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 19 [2024-11-14 03:00:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:35,808 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2024-11-14 03:00:35,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:00:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2024-11-14 03:00:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:00:35,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:35,809 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:35,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:00:36,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:36,014 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:36,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash -138011278, now seen corresponding path program 1 times [2024-11-14 03:00:36,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:36,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194024867] [2024-11-14 03:00:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:36,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:36,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194024867] [2024-11-14 03:00:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194024867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:00:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324332981] [2024-11-14 03:00:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:36,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:00:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:00:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:00:36,484 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:37,170 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-11-14 03:00:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:00:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-14 03:00:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:37,172 INFO L225 Difference]: With dead ends: 88 [2024-11-14 03:00:37,172 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 03:00:37,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:00:37,173 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 15 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:37,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 301 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:00:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 03:00:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-14 03:00:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 82 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-14 03:00:37,180 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 21 [2024-11-14 03:00:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:37,181 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-14 03:00:37,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-14 03:00:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:00:37,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:37,184 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:00:37,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 03:00:37,184 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:37,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash -138011277, now seen corresponding path program 1 times [2024-11-14 03:00:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889937358] [2024-11-14 03:00:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:00:37,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:37,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889937358] [2024-11-14 03:00:37,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889937358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:37,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:37,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:00:37,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875533151] [2024-11-14 03:00:37,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:37,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:00:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:00:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:00:37,886 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:38,551 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-14 03:00:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:00:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-14 03:00:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:38,553 INFO L225 Difference]: With dead ends: 87 [2024-11-14 03:00:38,553 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:00:38,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:00:38,554 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 14 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:38,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 293 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:00:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:00:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-14 03:00:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 82 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-14 03:00:38,559 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 21 [2024-11-14 03:00:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:38,559 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-14 03:00:38,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:00:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-14 03:00:38,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:00:38,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:38,560 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 03:00:38,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 03:00:38,561 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:38,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1097638666, now seen corresponding path program 1 times [2024-11-14 03:00:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076167227] [2024-11-14 03:00:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:38,694 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 03:00:38,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:38,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076167227] [2024-11-14 03:00:38,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076167227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:00:38,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:00:38,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:00:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281111027] [2024-11-14 03:00:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:00:38,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:00:38,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:00:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:00:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:38,696 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:00:39,028 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2024-11-14 03:00:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:00:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-14 03:00:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:00:39,030 INFO L225 Difference]: With dead ends: 99 [2024-11-14 03:00:39,030 INFO L226 Difference]: Without dead ends: 99 [2024-11-14 03:00:39,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:00:39,031 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:00:39,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 134 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:00:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-14 03:00:39,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2024-11-14 03:00:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.640625) internal successors, (105), 89 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:00:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-11-14 03:00:39,038 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 20 [2024-11-14 03:00:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:00:39,038 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-11-14 03:00:39,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:00:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-11-14 03:00:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 03:00:39,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:00:39,041 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 03:00:39,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 03:00:39,041 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:00:39,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:00:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1097638667, now seen corresponding path program 1 times [2024-11-14 03:00:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:00:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210923039] [2024-11-14 03:00:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:00:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:39,349 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 03:00:39,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:00:39,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210923039] [2024-11-14 03:00:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210923039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:00:39,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889315817] [2024-11-14 03:00:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:00:39,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:00:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:39,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:00:39,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:00:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:00:39,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 03:00:39,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:00:39,688 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 03:00:39,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:00:39,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:00:39,810 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 03:00:40,134 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 03:00:40,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889315817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:00:40,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715028237] [2024-11-14 03:00:40,137 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 03:00:40,137 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:00:40,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:00:40,138 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:00:40,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:00:41,297 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 22 for LOIs [2024-11-14 03:00:41,309 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:01:13,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1715028237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:13,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:01:13,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [9, 9, 9] total 35 [2024-11-14 03:01:13,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304620517] [2024-11-14 03:01:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:13,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:01:13,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:13,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:01:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1110, Unknown=8, NotChecked=0, Total=1260 [2024-11-14 03:01:13,743 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:16,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:20,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:22,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:25,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:27,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:29,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:32,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:34,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:36,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:43,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:01:45,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:45,605 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2024-11-14 03:01:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 03:01:45,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-14 03:01:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:45,607 INFO L225 Difference]: With dead ends: 105 [2024-11-14 03:01:45,607 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 03:01:45,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=156, Invalid=1168, Unknown=8, NotChecked=0, Total=1332 [2024-11-14 03:01:45,608 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:45,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 178 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 848 Invalid, 14 Unknown, 0 Unchecked, 30.9s Time] [2024-11-14 03:01:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 03:01:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-11-14 03:01:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.6029411764705883) internal successors, (109), 93 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2024-11-14 03:01:45,613 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 20 [2024-11-14 03:01:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:45,614 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2024-11-14 03:01:45,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2024-11-14 03:01:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:01:45,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:45,615 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 03:01:45,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:01:45,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:45,819 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:45,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash -332939659, now seen corresponding path program 1 times [2024-11-14 03:01:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116435101] [2024-11-14 03:01:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:46,091 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 03:01:46,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:46,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116435101] [2024-11-14 03:01:46,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116435101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:46,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:46,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:01:46,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219176604] [2024-11-14 03:01:46,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:46,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:01:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:01:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:01:46,095 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:46,515 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2024-11-14 03:01:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:01:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-14 03:01:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:46,516 INFO L225 Difference]: With dead ends: 114 [2024-11-14 03:01:46,517 INFO L226 Difference]: Without dead ends: 114 [2024-11-14 03:01:46,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:01:46,518 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:46,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 247 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:01:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-14 03:01:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2024-11-14 03:01:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.5942028985507246) internal successors, (110), 94 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2024-11-14 03:01:46,523 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 21 [2024-11-14 03:01:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:46,523 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2024-11-14 03:01:46,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2024-11-14 03:01:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:01:46,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:46,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:46,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 03:01:46,525 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:46,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1731194710, now seen corresponding path program 1 times [2024-11-14 03:01:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346509136] [2024-11-14 03:01:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:46,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:46,827 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 03:01:46,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:46,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346509136] [2024-11-14 03:01:46,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346509136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:46,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:46,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:01:46,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813280839] [2024-11-14 03:01:46,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:46,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:01:46,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:46,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:01:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:01:46,829 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:47,447 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2024-11-14 03:01:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:01:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-14 03:01:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:47,449 INFO L225 Difference]: With dead ends: 113 [2024-11-14 03:01:47,449 INFO L226 Difference]: Without dead ends: 113 [2024-11-14 03:01:47,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:01:47,454 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:47,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 190 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:01:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-14 03:01:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-11-14 03:01:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 95 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2024-11-14 03:01:47,460 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 22 [2024-11-14 03:01:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:47,461 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2024-11-14 03:01:47,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2024-11-14 03:01:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 03:01:47,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:47,463 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] [2024-11-14 03:01:47,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-14 03:01:47,463 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:47,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2127428329, now seen corresponding path program 1 times [2024-11-14 03:01:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448605672] [2024-11-14 03:01:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:47,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:47,915 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 03:01:47,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448605672] [2024-11-14 03:01:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448605672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:47,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:47,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:01:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260942519] [2024-11-14 03:01:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:47,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:01:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:01:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:01:47,918 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:48,450 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2024-11-14 03:01:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:01:48,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-14 03:01:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:48,452 INFO L225 Difference]: With dead ends: 102 [2024-11-14 03:01:48,452 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 03:01:48,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:01:48,453 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 11 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:48,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 240 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:01:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 03:01:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-14 03:01:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.5774647887323943) internal successors, (112), 96 states have internal predecessors, (112), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2024-11-14 03:01:48,461 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 23 [2024-11-14 03:01:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:48,461 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2024-11-14 03:01:48,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2024-11-14 03:01:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:01:48,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:48,462 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 03:01:48,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-14 03:01:48,462 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:48,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1525768627, now seen corresponding path program 1 times [2024-11-14 03:01:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:48,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702325471] [2024-11-14 03:01:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:48,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:48,919 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 03:01:48,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:48,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702325471] [2024-11-14 03:01:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702325471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:48,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:48,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:01:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386552556] [2024-11-14 03:01:48,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:48,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:01:48,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:01:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:01:48,921 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:49,511 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2024-11-14 03:01:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:01:49,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-14 03:01:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:49,514 INFO L225 Difference]: With dead ends: 109 [2024-11-14 03:01:49,514 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 03:01:49,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:01:49,515 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 41 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:49,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 224 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:01:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 03:01:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-11-14 03:01:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.5833333333333333) internal successors, (114), 97 states have internal predecessors, (114), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2024-11-14 03:01:49,521 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 24 [2024-11-14 03:01:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:49,521 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2024-11-14 03:01:49,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2024-11-14 03:01:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:01:49,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:49,522 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 03:01:49,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-14 03:01:49,523 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:49,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1525768626, now seen corresponding path program 1 times [2024-11-14 03:01:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:49,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506369895] [2024-11-14 03:01:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:49,848 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 03:01:49,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506369895] [2024-11-14 03:01:49,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506369895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:01:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909058959] [2024-11-14 03:01:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:49,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:49,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:01:49,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:01:49,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:01:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:50,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:01:50,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:01:50,298 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 03:01:50,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:01:50,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909058959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:01:50,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-14 03:01:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311641057] [2024-11-14 03:01:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:50,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:01:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:01:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:01:50,300 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:50,586 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2024-11-14 03:01:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:01:50,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-14 03:01:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:50,587 INFO L225 Difference]: With dead ends: 115 [2024-11-14 03:01:50,587 INFO L226 Difference]: Without dead ends: 115 [2024-11-14 03:01:50,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:01:50,588 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 36 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:50,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 160 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:01:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-14 03:01:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2024-11-14 03:01:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 102 states have internal predecessors, (123), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2024-11-14 03:01:50,593 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 24 [2024-11-14 03:01:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:50,594 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2024-11-14 03:01:50,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2024-11-14 03:01:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:01:50,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:50,595 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 03:01:50,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:01:50,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 03:01:50,799 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:50,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -54187109, now seen corresponding path program 1 times [2024-11-14 03:01:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:50,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973760469] [2024-11-14 03:01:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:51,242 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 03:01:51,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973760469] [2024-11-14 03:01:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973760469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:51,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:01:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511923201] [2024-11-14 03:01:51,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:51,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:01:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:01:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:01:51,244 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:51,797 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2024-11-14 03:01:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:01:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-14 03:01:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:51,798 INFO L225 Difference]: With dead ends: 111 [2024-11-14 03:01:51,798 INFO L226 Difference]: Without dead ends: 111 [2024-11-14 03:01:51,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:01:51,799 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 18 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:51,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 393 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:01:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-14 03:01:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2024-11-14 03:01:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 103 states have internal predecessors, (123), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:01:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2024-11-14 03:01:51,810 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 25 [2024-11-14 03:01:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:51,810 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2024-11-14 03:01:51,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:01:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2024-11-14 03:01:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:01:51,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:51,815 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:51,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-14 03:01:51,815 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:01:51,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1280858767, now seen corresponding path program 1 times [2024-11-14 03:01:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043805250] [2024-11-14 03:01:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:52,170 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 03:01:52,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:52,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043805250] [2024-11-14 03:01:52,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043805250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:01:52,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948372808] [2024-11-14 03:01:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:52,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:52,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:01:52,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:01:52,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:01:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:52,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 03:01:52,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:01:52,767 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 03:01:52,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:01:52,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:01:52,901 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 03:01:53,139 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 03:01:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948372808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:01:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [91823718] [2024-11-14 03:01:53,143 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 03:01:53,143 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:01:53,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:01:53,144 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:01:53,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:02:00,699 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:02:00,723 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:03:04,395 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5611#(and (or (< (select |#length| |ULTIMATE.start_main_~l~0#1.base|) (+ |ULTIMATE.start_main_~l~0#1.offset| 8)) (< |ULTIMATE.start_main_~l~0#1.offset| 0)) (or (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_main_~l~0#1.offset| 0))) (exists ((|v_#memory_$Pointer$.base_130| (Array Int (Array Int Int))) (|v_#memory_int_107| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~now~0#1.base_43| Int) (|v_#memory_$Pointer$.offset_129| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~now~0#1.offset_37| Int) (|v_#memory_int_105| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_129| (Array Int (Array Int Int))) (|v_#memory_int_106| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_130| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~data1~0#1.base_25| Int) (|v_ULTIMATE.start_create_~data1~0#1.offset_24| Int)) (and (<= 0 (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (<= (+ (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) 24) (select |#length| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)))) (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |#memory_$Pointer$.base| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))))))) (= (store |v_#memory_$Pointer$.offset_129| |v_ULTIMATE.start_create_~now~0#1.base_43| (store (select |v_#memory_$Pointer$.offset_129| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)))) |v_#memory_$Pointer$.offset_130|) (= |v_#memory_int_107| (store |v_#memory_int_106| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_int_106| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (select (select |v_#memory_int_107| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)))))) (<= (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_37|) (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_43|)) (= (select |#valid| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) 1) (<= 0 (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (= |v_#memory_int_106| (store |v_#memory_int_105| |v_ULTIMATE.start_create_~now~0#1.base_43| (store (select |v_#memory_int_105| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|) (select (select |v_#memory_int_106| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))))) (= (store |v_#memory_$Pointer$.base_129| |v_ULTIMATE.start_create_~now~0#1.base_43| (store (select |v_#memory_$Pointer$.base_129| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|) (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)))) |v_#memory_$Pointer$.base_130|) (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_43|) 1) (<= 0 (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)))) (= |#memory_int| (store |v_#memory_int_107| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_int_107| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |#memory_int| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))))))) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |#memory_$Pointer$.offset| (select (select (store |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.base_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.base_25|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) (store (select |v_#memory_$Pointer$.offset_130| (select (select |v_#memory_$Pointer$.base_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))) (select (select |v_#memory_$Pointer$.offset_130| |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|)) |v_ULTIMATE.start_create_~data1~0#1.offset_24|)) |v_ULTIMATE.start_create_~now~0#1.base_43|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_37|))))))))))' at error location [2024-11-14 03:03:04,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:03:04,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:03:04,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-14 03:03:04,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110707460] [2024-11-14 03:03:04,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:03:04,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:03:04,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:03:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1256, Unknown=14, NotChecked=0, Total=1406 [2024-11-14 03:03:04,398 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand has 18 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:03:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:05,415 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2024-11-14 03:03:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:03:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2024-11-14 03:03:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:05,418 INFO L225 Difference]: With dead ends: 111 [2024-11-14 03:03:05,418 INFO L226 Difference]: Without dead ends: 111 [2024-11-14 03:03:05,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=147, Invalid=1321, Unknown=14, NotChecked=0, Total=1482 [2024-11-14 03:03:05,420 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:05,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:03:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-14 03:03:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 108. [2024-11-14 03:03:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 78 states have (on average 1.5384615384615385) internal successors, (120), 102 states have internal predecessors, (120), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:03:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2024-11-14 03:03:05,435 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 27 [2024-11-14 03:03:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:05,435 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2024-11-14 03:03:05,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:03:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2024-11-14 03:03:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 03:03:05,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:05,438 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 03:03:05,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:03:05,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 03:03:05,639 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:03:05,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1679800243, now seen corresponding path program 1 times [2024-11-14 03:03:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:05,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710523172] [2024-11-14 03:03:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:06,333 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 03:03:06,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710523172] [2024-11-14 03:03:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710523172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:06,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:06,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:03:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014139184] [2024-11-14 03:03:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:06,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:03:06,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:03:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:03:06,339 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:03:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:07,137 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2024-11-14 03:03:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:03:07,138 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-14 03:03:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:07,139 INFO L225 Difference]: With dead ends: 109 [2024-11-14 03:03:07,139 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 03:03:07,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:03:07,140 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:07,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 299 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 03:03:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 03:03:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2024-11-14 03:03:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 102 states have internal predecessors, (119), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:03:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2024-11-14 03:03:07,150 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 26 [2024-11-14 03:03:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:07,150 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2024-11-14 03:03:07,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:03:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2024-11-14 03:03:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:03:07,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:07,152 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] [2024-11-14 03:03:07,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-14 03:03:07,152 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:03:07,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1701559895, now seen corresponding path program 1 times [2024-11-14 03:03:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583509206] [2024-11-14 03:03:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:03:08,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583509206] [2024-11-14 03:03:08,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583509206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161326770] [2024-11-14 03:03:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:08,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:08,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:08,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:08,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:03:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:08,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 03:03:08,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:08,742 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:03:08,742 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 03:03:08,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:03:08,992 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:03:08,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-14 03:03:09,113 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:03:09,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-14 03:03:09,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 03:03:09,174 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 03:03:09,242 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-14 03:03:09,243 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 03:03:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2024-11-14 03:03:09,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:03:09,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161326770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [982366998] [2024-11-14 03:03:09,436 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 03:03:09,436 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:03:09,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:03:09,436 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:03:09,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:03:15,633 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:03:15,650 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:04:23,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6197#(exists ((|v_ULTIMATE.start_create_~now~0#1.base_48| Int)) (not (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_48|) 1)))' at error location [2024-11-14 03:04:23,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:04:23,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:04:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21 [2024-11-14 03:04:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364976728] [2024-11-14 03:04:23,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:04:23,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:04:23,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:04:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:04:23,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1385, Unknown=26, NotChecked=76, Total=1640 [2024-11-14 03:04:23,195 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (3), 2 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 03:04:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:28,554 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-11-14 03:04:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:04:28,555 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (3), 2 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 29 [2024-11-14 03:04:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:28,556 INFO L225 Difference]: With dead ends: 106 [2024-11-14 03:04:28,556 INFO L226 Difference]: Without dead ends: 106 [2024-11-14 03:04:28,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 73.0s TimeCoverageRelationStatistics Valid=204, Invalid=1842, Unknown=28, NotChecked=88, Total=2162 [2024-11-14 03:04:28,558 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:28,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 365 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 394 Invalid, 0 Unknown, 64 Unchecked, 0.8s Time] [2024-11-14 03:04:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-14 03:04:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-14 03:04:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.5) internal successors, (117), 100 states have internal predecessors, (117), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:04:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2024-11-14 03:04:28,564 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 29 [2024-11-14 03:04:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:04:28,565 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2024-11-14 03:04:28,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (3), 2 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 03:04:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2024-11-14 03:04:28,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:04:28,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:28,566 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] [2024-11-14 03:04:28,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:04:28,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 03:04:28,767 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:04:28,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:28,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1701559894, now seen corresponding path program 1 times [2024-11-14 03:04:28,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:28,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688407381] [2024-11-14 03:04:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:04:30,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688407381] [2024-11-14 03:04:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688407381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:04:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425566949] [2024-11-14 03:04:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:30,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:04:30,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:04:30,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:04:30,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:04:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:30,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-14 03:04:30,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:04:30,797 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 03:04:30,916 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:04:30,917 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 03:04:31,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:04:31,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 03:04:31,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:04:31,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-14 03:04:31,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 03:04:31,547 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:04:31,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-14 03:04:31,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 03:04:31,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2024-11-14 03:04:31,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-14 03:04:31,712 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 03:04:31,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:04:31,732 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 03:04:31,751 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:04:31,752 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 03:04:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-14 03:04:31,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:04:32,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425566949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:04:32,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1046333307] [2024-11-14 03:04:32,044 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 03:04:32,044 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:04:32,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:04:32,044 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:04:32,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:04:38,179 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:04:38,193 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:05:11,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6439#true' at error location [2024-11-14 03:05:11,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:05:11,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:05:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 25 [2024-11-14 03:05:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720825492] [2024-11-14 03:05:11,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:05:11,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 03:05:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 03:05:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1696, Unknown=8, NotChecked=84, Total=1980 [2024-11-14 03:05:11,496 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 26 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:05:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:13,464 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2024-11-14 03:05:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:05:13,464 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 29 [2024-11-14 03:05:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:13,465 INFO L225 Difference]: With dead ends: 102 [2024-11-14 03:05:13,465 INFO L226 Difference]: Without dead ends: 102 [2024-11-14 03:05:13,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=319, Invalid=2647, Unknown=8, NotChecked=106, Total=3080 [2024-11-14 03:05:13,467 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 20 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:13,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 517 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 718 Invalid, 0 Unknown, 72 Unchecked, 1.1s Time] [2024-11-14 03:05:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-14 03:05:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-14 03:05:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 96 states have internal predecessors, (113), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:05:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2024-11-14 03:05:13,477 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 29 [2024-11-14 03:05:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:13,477 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2024-11-14 03:05:13,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:05:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2024-11-14 03:05:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:05:13,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:13,478 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 03:05:13,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:05:13,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:13,679 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:05:13,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1051916127, now seen corresponding path program 1 times [2024-11-14 03:05:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:13,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384647133] [2024-11-14 03:05:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:13,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:14,427 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 03:05:14,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384647133] [2024-11-14 03:05:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384647133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:14,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560702077] [2024-11-14 03:05:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:14,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:14,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:14,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:14,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:05:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:14,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-14 03:05:14,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:15,028 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 03:05:15,029 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 16 treesize of output 15 [2024-11-14 03:05:15,065 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:05:15,065 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 03:05:15,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:05:15,199 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 10 treesize of output 4 [2024-11-14 03:05:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:15,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:05:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560702077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2086307655] [2024-11-14 03:05:15,703 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-14 03:05:15,703 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:05:15,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:05:15,703 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:05:15,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:05:22,172 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:05:22,188 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:06:30,434 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6947#(and (= |ULTIMATE.start_loop_#t~mem14#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~l~0#1.base|) |ULTIMATE.start_main_~l~0#1.offset|)) (= |ULTIMATE.start_loop_#t~mem14#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~l~0#1.base|) |ULTIMATE.start_main_~l~0#1.offset|)) (= (select |#valid| |ULTIMATE.start_main_~l~0#1.base|) 1) (<= (+ |ULTIMATE.start_main_~l~0#1.offset| 8) (select |#length| |ULTIMATE.start_main_~l~0#1.base|)) (<= (select |#length| |ULTIMATE.start_main_~l~0#1.base|) (+ 23 |ULTIMATE.start_main_~l~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~l~0#1.offset|) (exists ((|v_ULTIMATE.start_create_~now~0#1.base_56| Int) (|v_#memory_$Pointer$.base_194| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_190| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_193| (Array Int (Array Int Int))) (|v_ULTIMATE.start_create_~data1~0#1.base_27| Int) (|v_ULTIMATE.start_create_~now~0#1.offset_49| Int) (|v_ULTIMATE.start_create_~data1~0#1.offset_26| Int) (|v_#memory_$Pointer$.offset_189| (Array Int (Array Int Int))) (|v_#memory_int_162| (Array Int (Array Int Int))) (|v_#memory_int_163| (Array Int (Array Int Int))) (|v_#memory_int_164| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |#memory_$Pointer$.base| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))))))) (<= 0 (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (= (select |#valid| |v_ULTIMATE.start_create_~now~0#1.base_56|) 1) (= |#memory_int| (store |v_#memory_int_164| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_int_164| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |#memory_int| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))))))) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |#memory_$Pointer$.offset| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))))))) (<= (+ 16 |v_ULTIMATE.start_create_~now~0#1.offset_49|) (select |#length| |v_ULTIMATE.start_create_~now~0#1.base_56|)) (= (select |#valid| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) 1) (<= (+ (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) 24) (select |#length| (select (select (store |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.base_194| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.base_27|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)))) (= (store |v_#memory_int_163| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_int_163| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (select (select |v_#memory_int_164| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))))) |v_#memory_int_164|) (= (store |v_#memory_$Pointer$.offset_189| |v_ULTIMATE.start_create_~now~0#1.base_56| (store (select |v_#memory_$Pointer$.offset_189| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)))) |v_#memory_$Pointer$.offset_190|) (= |v_#memory_int_163| (store |v_#memory_int_162| |v_ULTIMATE.start_create_~now~0#1.base_56| (store (select |v_#memory_int_162| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|) (select (select |v_#memory_int_163| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))))) (<= 0 (+ 16 (select (select (store |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (store (select |v_#memory_$Pointer$.offset_190| (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|))) (select (select |v_#memory_$Pointer$.offset_190| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) |v_ULTIMATE.start_create_~data1~0#1.offset_26|)) |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)))) (<= 0 (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)) (= (store |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_56| (store (select |v_#memory_$Pointer$.base_193| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|) (select (select |v_#memory_$Pointer$.base_194| |v_ULTIMATE.start_create_~now~0#1.base_56|) (+ 8 |v_ULTIMATE.start_create_~now~0#1.offset_49|)))) |v_#memory_$Pointer$.base_194|))) (or (not (= |ULTIMATE.start_main_~l~0#1.base| 0)) (not (= |ULTIMATE.start_main_~l~0#1.offset| 0))))' at error location [2024-11-14 03:06:30,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:06:30,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:06:30,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-14 03:06:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583600856] [2024-11-14 03:06:30,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:06:30,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 03:06:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:06:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 03:06:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2024, Unknown=21, NotChecked=0, Total=2256 [2024-11-14 03:06:30,436 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 23 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 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 03:06:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:31,658 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2024-11-14 03:06:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 03:06:31,659 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 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 28 [2024-11-14 03:06:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:31,660 INFO L225 Difference]: With dead ends: 105 [2024-11-14 03:06:31,660 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 03:06:31,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 69.7s TimeCoverageRelationStatistics Valid=251, Invalid=2378, Unknown=23, NotChecked=0, Total=2652 [2024-11-14 03:06:31,662 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 17 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:31,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 424 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 03:06:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 03:06:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-14 03:06:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 97 states have internal predecessors, (114), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:06:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2024-11-14 03:06:31,668 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 28 [2024-11-14 03:06:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:31,669 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2024-11-14 03:06:31,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 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 03:06:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2024-11-14 03:06:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:06:31,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:31,670 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 03:06:31,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:06:31,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:31,871 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:06:31,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash -534199843, now seen corresponding path program 1 times [2024-11-14 03:06:31,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:06:31,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074874246] [2024-11-14 03:06:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:31,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:06:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:32,827 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 03:06:32,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:06:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074874246] [2024-11-14 03:06:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074874246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:32,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-14 03:06:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960212834] [2024-11-14 03:06:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:32,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 03:06:32,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:06:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 03:06:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:06:32,832 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:33,942 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2024-11-14 03:06:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:06:33,942 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-14 03:06:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:33,943 INFO L225 Difference]: With dead ends: 103 [2024-11-14 03:06:33,943 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 03:06:33,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:06:33,944 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:33,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 321 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:06:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 03:06:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 03:06:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 97 states have internal predecessors, (113), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:06:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2024-11-14 03:06:33,953 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 27 [2024-11-14 03:06:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:33,953 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2024-11-14 03:06:33,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2024-11-14 03:06:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:06:33,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:33,954 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 03:06:33,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-14 03:06:33,955 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:06:33,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2030031136, now seen corresponding path program 1 times [2024-11-14 03:06:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:06:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955540861] [2024-11-14 03:06:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:06:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:34,790 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 03:06:34,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:06:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955540861] [2024-11-14 03:06:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955540861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:34,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:34,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-14 03:06:34,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782524117] [2024-11-14 03:06:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:34,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:06:34,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:06:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:06:34,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:06:34,793 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:35,804 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2024-11-14 03:06:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:06:35,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-14 03:06:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:35,806 INFO L225 Difference]: With dead ends: 103 [2024-11-14 03:06:35,806 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 03:06:35,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:06:35,807 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:35,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 251 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:06:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 03:06:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 03:06:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 97 states have internal predecessors, (112), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:06:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-14 03:06:35,812 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 29 [2024-11-14 03:06:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:35,812 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-14 03:06:35,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-14 03:06:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:06:35,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:35,814 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 03:06:35,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-14 03:06:35,814 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:06:35,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2030032359, now seen corresponding path program 1 times [2024-11-14 03:06:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:06:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320725316] [2024-11-14 03:06:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:06:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:36,004 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 03:06:36,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:06:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320725316] [2024-11-14 03:06:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320725316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:06:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890674215] [2024-11-14 03:06:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:36,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:06:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:06:36,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:06:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:06:36,007 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:36,308 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2024-11-14 03:06:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:06:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-14 03:06:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:36,309 INFO L225 Difference]: With dead ends: 107 [2024-11-14 03:06:36,309 INFO L226 Difference]: Without dead ends: 107 [2024-11-14 03:06:36,309 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 03:06:36,310 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:36,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 221 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:06:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-14 03:06:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2024-11-14 03:06:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 78 states have (on average 1.358974358974359) internal successors, (106), 96 states have internal predecessors, (106), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:06:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-14 03:06:36,313 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 29 [2024-11-14 03:06:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:36,314 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-14 03:06:36,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-14 03:06:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:06:36,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:36,314 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 03:06:36,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-14 03:06:36,315 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:06:36,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1554332402, now seen corresponding path program 1 times [2024-11-14 03:06:36,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:06:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316667970] [2024-11-14 03:06:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:06:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:37,727 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 03:06:37,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:06:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316667970] [2024-11-14 03:06:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316667970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:06:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369814190] [2024-11-14 03:06:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:37,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:06:37,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:06:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:37,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 03:06:37,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:38,242 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:06:38,243 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 03:06:38,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:06:38,463 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:06:38,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-14 03:06:38,554 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:06:38,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-14 03:06:38,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 03:06:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:38,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:38,949 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-14 03:06:38,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:06:39,060 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1849 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1849) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) .cse0))) is different from false [2024-11-14 03:06:39,071 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1848 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1848))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)))) (= (select (select (store .cse0 .cse1 v_ArrVal_1849) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) .cse1)))) is different from false [2024-11-14 03:06:39,082 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1849 (Array Int Int)) (v_ArrVal_1848 (Array Int Int))) (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse2) v_ArrVal_1848))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_1849) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))))))) is different from false [2024-11-14 03:06:39,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:06:39,094 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 63 treesize of output 44 [2024-11-14 03:06:39,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:06:39,114 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 272 treesize of output 217 [2024-11-14 03:06:39,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:06:39,138 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 132 treesize of output 104 [2024-11-14 03:06:39,145 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 96 treesize of output 84 [2024-11-14 03:06:39,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369814190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:06:39,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1282316833] [2024-11-14 03:06:39,611 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 03:06:39,612 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:06:39,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:06:39,616 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:06:39,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:06:46,107 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:06:46,125 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:07:55,247 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8026#(exists ((|v_ULTIMATE.start_loop_~x#1.base_48| Int)) (and (not (= (select |#valid| |v_ULTIMATE.start_loop_~x#1.base_48|) 1)) (or (not (= |v_ULTIMATE.start_loop_~x#1.base_48| 0)) (not (= |ULTIMATE.start_loop_~x#1.offset| 0)))))' at error location [2024-11-14 03:07:55,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:07:55,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:07:55,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-11-14 03:07:55,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347799299] [2024-11-14 03:07:55,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:07:55,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 03:07:55,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:07:55,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 03:07:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2429, Unknown=38, NotChecked=306, Total=2970 [2024-11-14 03:07:55,249 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 27 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 03:07:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:56,862 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2024-11-14 03:07:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 03:07:56,862 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 31 [2024-11-14 03:07:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:56,863 INFO L225 Difference]: With dead ends: 106 [2024-11-14 03:07:56,863 INFO L226 Difference]: Without dead ends: 106 [2024-11-14 03:07:56,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 71.3s TimeCoverageRelationStatistics Valid=290, Invalid=3344, Unknown=38, NotChecked=360, Total=4032 [2024-11-14 03:07:56,865 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:56,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 588 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:07:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-14 03:07:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-14 03:07:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 99 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:07:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2024-11-14 03:07:56,870 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 31 [2024-11-14 03:07:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:56,870 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2024-11-14 03:07:56,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 03:07:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2024-11-14 03:07:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:07:56,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:56,871 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 03:07:56,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:07:57,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:57,072 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:07:57,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1554332403, now seen corresponding path program 1 times [2024-11-14 03:07:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:07:57,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659755180] [2024-11-14 03:07:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:57,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:07:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:07:59,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:07:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659755180] [2024-11-14 03:07:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659755180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059057882] [2024-11-14 03:07:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:59,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:59,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:59,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:59,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:07:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:59,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-14 03:07:59,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:59,513 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 03:07:59,685 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:07:59,685 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 03:07:59,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 03:07:59,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:08:00,082 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:08:00,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-14 03:08:00,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 03:08:00,207 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:08:00,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-14 03:08:00,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 03:08:00,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 03:08:00,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-14 03:08:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:08:00,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:00,907 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_1982 (Array Int Int)) (v_ArrVal_1981 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1981) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1982) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))) (forall ((v_ArrVal_1981 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1981) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))))) is different from false [2024-11-14 03:08:00,927 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_1982 (Array Int Int)) (v_ArrVal_1981 (Array Int Int)) (v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1980))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) .cse3))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1979) .cse0 v_ArrVal_1981) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1982) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1981 (Array Int Int)) (v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1979) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_1980) |c_ULTIMATE.start_create_~now~0#1.base|) .cse3) v_ArrVal_1981) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))))) is different from false [2024-11-14 03:08:00,947 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse2 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1981 (Array Int Int)) (v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1979) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1980) |c_ULTIMATE.start_create_~now~0#1.base|) .cse1) v_ArrVal_1981) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))) (forall ((v_ArrVal_1982 (Array Int Int)) (v_ArrVal_1981 (Array Int Int)) (v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1979 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1980))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1979) .cse3 v_ArrVal_1981) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2) 8) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1982) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse2))))))))) is different from false [2024-11-14 03:08:00,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:00,960 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 44 treesize of output 45 [2024-11-14 03:08:00,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:00,976 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 36 treesize of output 37 [2024-11-14 03:08:00,984 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 64 treesize of output 52 [2024-11-14 03:08:01,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:01,003 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 200 treesize of output 187 [2024-11-14 03:08:01,017 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 66 treesize of output 62 [2024-11-14 03:08:01,026 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 88 treesize of output 76 [2024-11-14 03:08:01,036 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 54 treesize of output 46 [2024-11-14 03:08:01,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:01,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2024-11-14 03:08:01,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:01,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2024-11-14 03:08:01,140 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:08:01,141 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:08:01,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:08:01,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2024-11-14 03:08:01,151 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:08:01,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:08:01,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2024-11-14 03:08:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059057882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:08:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [793153637] [2024-11-14 03:08:01,428 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-14 03:08:01,428 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:08:01,428 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:08:01,428 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:08:01,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:08:08,520 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:08:08,535 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:08:46,692 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8276#true' at error location [2024-11-14 03:08:46,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:08:46,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:08:46,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 29 [2024-11-14 03:08:46,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907515097] [2024-11-14 03:08:46,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:46,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 03:08:46,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:08:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 03:08:46,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2848, Unknown=33, NotChecked=330, Total=3422 [2024-11-14 03:08:46,695 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 30 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 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 03:08:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:48,336 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-14 03:08:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 03:08:48,337 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 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 31 [2024-11-14 03:08:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:48,338 INFO L225 Difference]: With dead ends: 108 [2024-11-14 03:08:48,338 INFO L226 Difference]: Without dead ends: 108 [2024-11-14 03:08:48,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=290, Invalid=3593, Unknown=35, NotChecked=372, Total=4290 [2024-11-14 03:08:48,339 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 16 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:48,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 701 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:08:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-14 03:08:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-14 03:08:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.353658536585366) internal successors, (111), 100 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:08:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2024-11-14 03:08:48,342 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 31 [2024-11-14 03:08:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:48,343 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2024-11-14 03:08:48,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 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 03:08:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2024-11-14 03:08:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:08:48,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:48,343 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:48,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 03:08:48,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:48,544 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:08:48,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash -737580692, now seen corresponding path program 1 times [2024-11-14 03:08:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:08:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723275735] [2024-11-14 03:08:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:48,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:08:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:08:49,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:08:49,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723275735] [2024-11-14 03:08:49,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723275735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:08:49,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781460987] [2024-11-14 03:08:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:49,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:49,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:08:49,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:08:49,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 03:08:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:49,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-14 03:08:49,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:50,072 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:08:50,073 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 03:08:50,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:08:50,140 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:08:50,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-14 03:08:50,189 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:08:50,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-14 03:08:50,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 03:08:50,261 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 03:08:50,298 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:08:50,299 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 03:08:50,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:08:50,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-14 03:08:50,411 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:08:50,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-14 03:08:50,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-14 03:08:50,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-14 03:08:50,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-14 03:08:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:08:50,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:50,605 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_2160 (Array Int Int)) (v_ArrVal_2159 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2159) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2160) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0)))) (forall ((v_ArrVal_2159 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_#t~mem11#1.base| v_ArrVal_2159) |c_ULTIMATE.start_create_~now~0#1.base|) .cse0) 16))))) is different from false [2024-11-14 03:08:50,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:50,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-14 03:08:50,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:50,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-14 03:08:50,812 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 62 treesize of output 50 [2024-11-14 03:08:50,818 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 96 treesize of output 78 [2024-11-14 03:08:50,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-14 03:08:50,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:08:50,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:08:50,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-14 03:08:50,853 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:08:50,856 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 22 treesize of output 10 [2024-11-14 03:08:51,290 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-14 03:08:51,291 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 21 [2024-11-14 03:08:51,300 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2153 (Array Int Int))) (= |c_ULTIMATE.start_create_#t~mem12#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2153) |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)))) is different from false [2024-11-14 03:08:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2024-11-14 03:08:51,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781460987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [65347605] [2024-11-14 03:08:51,564 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-14 03:08:51,564 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:08:51,564 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:08:51,565 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:08:51,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:08:57,813 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:08:57,830 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:09:31,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8925#(and (exists ((|v_#memory_int_239| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_281| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_280| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_270| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_271| (Array Int (Array Int Int))) (|v_#memory_int_238| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_271| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (store (select |v_#memory_$Pointer$.offset_271| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) |ULTIMATE.start_create_~data1~0#1.offset|))) (= |v_#memory_$Pointer$.offset_271| (store |v_#memory_$Pointer$.offset_270| |ULTIMATE.start_create_~now~0#1.base| (store (select |v_#memory_$Pointer$.offset_270| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8) (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))))) (= (store |v_#memory_int_238| |ULTIMATE.start_create_~now~0#1.base| (store (select |v_#memory_int_238| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8) (select (select |v_#memory_int_239| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))) |v_#memory_int_239|) (<= 0 (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (= (store |v_#memory_$Pointer$.base_280| |ULTIMATE.start_create_~now~0#1.base| (store (select |v_#memory_$Pointer$.base_280| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8) (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))) |v_#memory_$Pointer$.base_281|) (= |#memory_int| (store |v_#memory_int_239| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (store (select |v_#memory_int_239| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (select (select |#memory_int| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))))) (= (select |#valid| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) 1) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_281| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (store (select |v_#memory_$Pointer$.base_281| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) |ULTIMATE.start_create_~data1~0#1.base|))) (<= (+ (select (select |v_#memory_$Pointer$.offset_271| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) 8) (select |#length| (select (select |v_#memory_$Pointer$.base_281| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)))))) (= (select |#valid| |ULTIMATE.start_create_~now~0#1.base|) 1) (<= (+ |ULTIMATE.start_create_~now~0#1.offset| 16) (select |#length| |ULTIMATE.start_create_~now~0#1.base|)) (<= 0 (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) (or (< (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8)) 24)) (< (+ 16 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_~now~0#1.base|) (+ |ULTIMATE.start_create_~now~0#1.offset| 8))) 0)))' at error location [2024-11-14 03:09:31,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:09:31,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:09:31,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 31 [2024-11-14 03:09:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862942731] [2024-11-14 03:09:31,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:09:31,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 03:09:31,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:09:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 03:09:31,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1973, Unknown=22, NotChecked=182, Total=2352 [2024-11-14 03:09:31,869 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 32 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 03:09:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:33,537 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-11-14 03:09:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:09:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2024-11-14 03:09:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:33,538 INFO L225 Difference]: With dead ends: 105 [2024-11-14 03:09:33,539 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 03:09:33,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=247, Invalid=2601, Unknown=22, NotChecked=210, Total=3080 [2024-11-14 03:09:33,540 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:33,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 634 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 517 Invalid, 0 Unknown, 58 Unchecked, 0.9s Time] [2024-11-14 03:09:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 03:09:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-14 03:09:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 99 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:09:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2024-11-14 03:09:33,546 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 33 [2024-11-14 03:09:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:33,546 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2024-11-14 03:09:33,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 27 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 03:09:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2024-11-14 03:09:33,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:09:33,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:33,548 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 03:09:33,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 03:09:33,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:33,752 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:09:33,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 939750386, now seen corresponding path program 1 times [2024-11-14 03:09:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:09:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943784853] [2024-11-14 03:09:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:09:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 03:09:33,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:09:33,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943784853] [2024-11-14 03:09:33,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943784853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:09:33,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330560859] [2024-11-14 03:09:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:33,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:33,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:09:33,984 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:09:33,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:09:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:34,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:09:34,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:09:34,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:34,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:09:34,885 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 03:09:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:09:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330560859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1833384618] [2024-11-14 03:09:35,191 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 03:09:35,191 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:09:35,191 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:09:35,191 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:09:35,192 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:09:44,161 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:09:44,178 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:10:15,016 WARN L286 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 304 DAG size of output: 297 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:10:37,320 WARN L286 SmtUtils]: Spent 13.61s on a formula simplification. DAG size of input: 310 DAG size of output: 302 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:11:16,311 WARN L286 SmtUtils]: Spent 22.07s on a formula simplification. DAG size of input: 331 DAG size of output: 322 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:11:26,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9166#true' at error location [2024-11-14 03:11:26,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:11:26,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:11:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-14 03:11:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846094712] [2024-11-14 03:11:26,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:11:26,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:11:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:11:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:11:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1425, Unknown=13, NotChecked=0, Total=1560 [2024-11-14 03:11:26,373 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 19 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:11:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:11:28,880 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2024-11-14 03:11:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:11:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 19 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2024-11-14 03:11:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:11:28,884 INFO L225 Difference]: With dead ends: 112 [2024-11-14 03:11:28,884 INFO L226 Difference]: Without dead ends: 112 [2024-11-14 03:11:28,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 103.6s TimeCoverageRelationStatistics Valid=177, Invalid=1879, Unknown=14, NotChecked=0, Total=2070 [2024-11-14 03:11:28,885 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 57 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:11:28,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 371 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 03:11:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-14 03:11:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2024-11-14 03:11:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 98 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:11:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-14 03:11:28,895 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 32 [2024-11-14 03:11:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:11:28,896 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-14 03:11:28,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.166666666666667) internal successors, (75), 19 states have internal predecessors, (75), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:11:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-14 03:11:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:11:28,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:11:28,897 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] [2024-11-14 03:11:28,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 03:11:29,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-14 03:11:29,098 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:11:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:11:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash 944796345, now seen corresponding path program 1 times [2024-11-14 03:11:29,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:11:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006340023] [2024-11-14 03:11:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:11:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:11:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:11:29,353 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 03:11:29,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:11:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006340023] [2024-11-14 03:11:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006340023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:11:29,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:11:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:11:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202525699] [2024-11-14 03:11:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:11:29,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:11:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:11:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:11:29,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:11:29,355 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:11:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:11:30,100 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-11-14 03:11:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:11:30,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-14 03:11:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:11:30,102 INFO L225 Difference]: With dead ends: 105 [2024-11-14 03:11:30,102 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 03:11:30,102 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 03:11:30,103 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:11:30,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 164 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 03:11:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 03:11:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-14 03:11:30,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 99 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:11:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2024-11-14 03:11:30,109 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 31 [2024-11-14 03:11:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:11:30,109 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2024-11-14 03:11:30,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:11:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2024-11-14 03:11:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:11:30,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:11:30,111 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, 1] [2024-11-14 03:11:30,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-14 03:11:30,111 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:11:30,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:11:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash -932509074, now seen corresponding path program 1 times [2024-11-14 03:11:30,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:11:30,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077092652] [2024-11-14 03:11:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:11:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:11:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:11:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:11:31,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:11:31,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077092652] [2024-11-14 03:11:31,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077092652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:11:31,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040093665] [2024-11-14 03:11:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:11:31,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:11:31,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:11:31,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:11:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 03:11:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:11:32,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-14 03:11:32,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:32,534 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 03:11:32,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:32,687 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 03:11:33,148 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:11:33,149 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 03:11:33,184 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 03:11:33,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-14 03:11:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:33,377 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 03:11:33,935 INFO L349 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2024-11-14 03:11:33,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 40 [2024-11-14 03:11:33,953 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 18 [2024-11-14 03:11:34,247 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-14 03:11:34,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 56 [2024-11-14 03:11:34,263 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 18 [2024-11-14 03:11:35,188 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:11:35,189 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-14 03:11:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:11:35,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:38,252 INFO L349 Elim1Store]: treesize reduction 19, result has 68.3 percent of original size [2024-11-14 03:11:38,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 167 [2024-11-14 03:11:38,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:11:38,346 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 1313 treesize of output 1264 [2024-11-14 03:11:38,383 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 178 treesize of output 158 [2024-11-14 03:11:38,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-14 03:11:39,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:11:39,097 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 219 treesize of output 233 [2024-11-14 03:11:39,904 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 03:11:43,187 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 03:11:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040093665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:11:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1134723142] [2024-11-14 03:11:45,112 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 03:11:45,112 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:11:45,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:11:45,112 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:11:45,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:11:53,466 INFO L197 IcfgInterpreter]: Interpreting procedure alloc_and_zero with input of size 24 for LOIs [2024-11-14 03:11:53,493 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:12:33,554 WARN L286 SmtUtils]: Spent 11.86s on a formula simplification. DAG size of input: 295 DAG size of output: 288 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:12:58,815 WARN L286 SmtUtils]: Spent 13.01s on a formula simplification. DAG size of input: 301 DAG size of output: 293 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:13:32,767 WARN L286 SmtUtils]: Spent 19.81s on a formula simplification. DAG size of input: 322 DAG size of output: 313 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:13:44,190 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10030#(and (<= 0 |ULTIMATE.start_destroy_~l#1.offset|) (or (not (= |ULTIMATE.start_destroy_~l#1.base| 0)) (not (= |ULTIMATE.start_destroy_~l#1.offset| 0))) (= (select |#valid| |ULTIMATE.start_destroy_~l#1.base|) 1) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_destroy_~l#1.base|) |ULTIMATE.start_destroy_~l#1.offset|) 0)) (<= (+ |ULTIMATE.start_destroy_~l#1.offset| 8) (select |#length| |ULTIMATE.start_destroy_~l#1.base|)) (= |ULTIMATE.start_destroy_#t~mem17#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_destroy_~l#1.base|) |ULTIMATE.start_destroy_~l#1.offset|)))' at error location [2024-11-14 03:13:44,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:13:44,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:13:44,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 31 [2024-11-14 03:13:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109572026] [2024-11-14 03:13:44,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:13:44,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 03:13:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:13:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 03:13:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3635, Unknown=31, NotChecked=0, Total=3906 [2024-11-14 03:13:44,193 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 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 03:13:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:48,531 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2024-11-14 03:13:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:13:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 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 33 [2024-11-14 03:13:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:48,532 INFO L225 Difference]: With dead ends: 125 [2024-11-14 03:13:48,532 INFO L226 Difference]: Without dead ends: 125 [2024-11-14 03:13:48,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 119.3s TimeCoverageRelationStatistics Valid=322, Invalid=4339, Unknown=31, NotChecked=0, Total=4692 [2024-11-14 03:13:48,534 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 46 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:48,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 608 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 03:13:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-14 03:13:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2024-11-14 03:13:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 100 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:13:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2024-11-14 03:13:48,538 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 33 [2024-11-14 03:13:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:48,538 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2024-11-14 03:13:48,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 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 03:13:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2024-11-14 03:13:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 03:13:48,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:48,539 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 03:13:48,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 03:13:48,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-14 03:13:48,740 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 41 more)] === [2024-11-14 03:13:48,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1056749226, now seen corresponding path program 2 times [2024-11-14 03:13:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:13:48,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610450484] [2024-11-14 03:13:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:48,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:13:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:52,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:13:52,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610450484] [2024-11-14 03:13:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610450484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:13:52,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534303625] [2024-11-14 03:13:52,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:13:52,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:52,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:13:52,116 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:13:52,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca1c822-9a5c-4ce2-8ad1-9ef53eb9df27/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 03:13:52,701 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:13:52,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:13:52,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-14 03:13:52,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:53,005 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 03:13:53,017 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 03:13:53,103 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 03:13:53,103 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 03:13:53,131 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 15 [2024-11-14 03:13:53,172 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 22 [2024-11-14 03:13:53,420 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:13:53,420 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 1 case distinctions, treesize of input 85 treesize of output 58 [2024-11-14 03:13:53,433 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 46 treesize of output 25 [2024-11-14 03:13:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:53,682 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:13:53,683 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 1 case distinctions, treesize of input 93 treesize of output 66 [2024-11-14 03:13:53,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:53,707 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 50 treesize of output 25 [2024-11-14 03:13:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:54,632 INFO L311 TraceCheckSpWp]: Computing backward predicates...