./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-15/cstrspn_diffterm_alloca.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_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-15/cstrspn_diffterm_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0942d3c46657b9d8ac8f8537aec24fbcc2f0b19e897472dc297ad201df07c1bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:31:09,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:31:09,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 14:31:09,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:31:09,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:31:09,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:31:09,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:31:09,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:31:09,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:31:09,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:31:09,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:31:09,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:31:09,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:31:09,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:31:09,474 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:31:09,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:31:09,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:31:09,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:31:09,476 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:31:09,476 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:31:09,476 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:31:09,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:31:09,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:31:09,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:31:09,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:31:09,478 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd 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 -> Automizer 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 -> 0942d3c46657b9d8ac8f8537aec24fbcc2f0b19e897472dc297ad201df07c1bb [2024-11-13 14:31:09,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:31:09,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:31:09,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:31:09,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:31:09,960 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:31:09,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/termination-15/cstrspn_diffterm_alloca.i Unable to find full path for "g++" [2024-11-13 14:31:12,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:31:12,846 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:31:12,847 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/sv-benchmarks/c/termination-15/cstrspn_diffterm_alloca.i [2024-11-13 14:31:12,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/data/cd8dab6ce/831faf33798c406a8b20652d2265a8f1/FLAG5698378de [2024-11-13 14:31:13,068 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/data/cd8dab6ce/831faf33798c406a8b20652d2265a8f1 [2024-11-13 14:31:13,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:31:13,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:31:13,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:31:13,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:31:13,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:31:13,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa410c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13, skipping insertion in model container [2024-11-13 14:31:13,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,138 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:31:13,576 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:31:13,577 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:31:13,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:31:13,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:31:13,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:31:13,715 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:31:13,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13 WrapperNode [2024-11-13 14:31:13,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:31:13,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:31:13,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:31:13,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:31:13,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,778 INFO L138 Inliner]: procedures = 152, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-11-13 14:31:13,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:31:13,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:31:13,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:31:13,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:31:13,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,815 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [3, 4]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-11-13 14:31:13,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:31:13,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:31:13,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:31:13,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:31:13,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (1/1) ... [2024-11-13 14:31:13,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:31:13,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:13,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:31:13,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:31:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:31:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:31:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:31:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:31:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:31:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:31:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:31:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:31:14,095 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:31:14,098 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:31:14,496 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-13 14:31:14,497 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:31:14,515 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:31:14,516 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:31:14,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:14 BoogieIcfgContainer [2024-11-13 14:31:14,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:31:14,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:31:14,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:31:14,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:31:14,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:31:13" (1/3) ... [2024-11-13 14:31:14,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe74e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:31:14, skipping insertion in model container [2024-11-13 14:31:14,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:31:13" (2/3) ... [2024-11-13 14:31:14,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe74e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:31:14, skipping insertion in model container [2024-11-13 14:31:14,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:14" (3/3) ... [2024-11-13 14:31:14,535 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrspn_diffterm_alloca.i [2024-11-13 14:31:14,560 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:31:14,565 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG cstrspn_diffterm_alloca.i that has 1 procedures, 40 locations, 1 initial locations, 2 loop locations, and 15 error locations. [2024-11-13 14:31:14,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:31:14,665 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=PETRI_NET, 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;@15d7adba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:31:14,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-13 14:31:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:14,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:31:14,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:14,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:31:14,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:14,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash 889510731, now seen corresponding path program 1 times [2024-11-13 14:31:14,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:14,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032356645] [2024-11-13 14:31:14,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032356645] [2024-11-13 14:31:15,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032356645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:15,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:15,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:31:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930559269] [2024-11-13 14:31:15,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:15,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:31:15,201 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:15,292 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-13 14:31:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:31:15,296 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:31:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:15,306 INFO L225 Difference]: With dead ends: 39 [2024-11-13 14:31:15,307 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:31:15,310 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 [2024-11-13 14:31:15,317 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:15,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:31:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 14:31:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.826086956521739) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-13 14:31:15,362 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 6 [2024-11-13 14:31:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:15,363 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-13 14:31:15,363 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-13 14:31:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:31:15,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:15,364 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:31:15,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:31:15,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:15,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash 889510732, now seen corresponding path program 1 times [2024-11-13 14:31:15,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:15,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703436326] [2024-11-13 14:31:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:15,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703436326] [2024-11-13 14:31:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703436326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:15,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:15,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:31:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087697234] [2024-11-13 14:31:15,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:15,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:31:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:31:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:15,972 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:16,017 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-13 14:31:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:31:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:31:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:16,019 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:31:16,021 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 14:31:16,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:16,023 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:16,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 78 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 14:31:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 14:31:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-13 14:31:16,034 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 6 [2024-11-13 14:31:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:16,035 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-13 14:31:16,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-13 14:31:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:31:16,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:16,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:31:16,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:31:16,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:16,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 889570314, now seen corresponding path program 1 times [2024-11-13 14:31:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379637492] [2024-11-13 14:31:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379637492] [2024-11-13 14:31:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379637492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:16,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:16,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:31:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317170601] [2024-11-13 14:31:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:16,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:31:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:31:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:31:16,378 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:16,420 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-13 14:31:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:31:16,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:31:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:16,422 INFO L225 Difference]: With dead ends: 39 [2024-11-13 14:31:16,422 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 14:31:16,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:31:16,423 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:16,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 14:31:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-13 14:31:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-13 14:31:16,434 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 6 [2024-11-13 14:31:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:16,435 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-13 14:31:16,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-13 14:31:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:31:16,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:16,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:16,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:31:16,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:16,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028874, now seen corresponding path program 1 times [2024-11-13 14:31:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674623811] [2024-11-13 14:31:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674623811] [2024-11-13 14:31:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674623811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:16,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:31:16,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928265127] [2024-11-13 14:31:16,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:16,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:16,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:16,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:16,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:31:16,529 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:16,595 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-13 14:31:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:31:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:31:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:16,598 INFO L225 Difference]: With dead ends: 35 [2024-11-13 14:31:16,598 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 14:31:16,599 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 [2024-11-13 14:31:16,600 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:16,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 14:31:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-13 14:31:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-13 14:31:16,608 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 7 [2024-11-13 14:31:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:16,608 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-13 14:31:16,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-13 14:31:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:31:16,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:16,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:16,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:31:16,612 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:16,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028875, now seen corresponding path program 1 times [2024-11-13 14:31:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862578897] [2024-11-13 14:31:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:16,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:16,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862578897] [2024-11-13 14:31:16,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862578897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:16,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:16,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:31:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530530098] [2024-11-13 14:31:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:16,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:31:16,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:16,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:31:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:16,856 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:16,886 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-13 14:31:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:31:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:31:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:16,891 INFO L225 Difference]: With dead ends: 38 [2024-11-13 14:31:16,891 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 14:31:16,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:16,892 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:16,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 14:31:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-13 14:31:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-13 14:31:16,900 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 7 [2024-11-13 14:31:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:16,903 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-13 14:31:16,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-13 14:31:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:31:16,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:16,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:16,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:31:16,904 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:16,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1805088457, now seen corresponding path program 1 times [2024-11-13 14:31:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:16,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15860334] [2024-11-13 14:31:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15860334] [2024-11-13 14:31:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15860334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:17,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:31:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381700979] [2024-11-13 14:31:17,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:17,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:31:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:17,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:31:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:31:17,178 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:17,217 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-13 14:31:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:31:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:31:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:17,222 INFO L225 Difference]: With dead ends: 37 [2024-11-13 14:31:17,222 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:31:17,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:31:17,223 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:17,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:31:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-11-13 14:31:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-13 14:31:17,231 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 7 [2024-11-13 14:31:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:17,231 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-13 14:31:17,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-13 14:31:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:31:17,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:17,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:17,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:31:17,235 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:17,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash -534039922, now seen corresponding path program 1 times [2024-11-13 14:31:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549791765] [2024-11-13 14:31:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:17,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549791765] [2024-11-13 14:31:17,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549791765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:17,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:17,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:31:17,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369059712] [2024-11-13 14:31:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:17,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:31:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:31:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:17,344 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:17,418 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-11-13 14:31:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:31:17,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 14:31:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:17,419 INFO L225 Difference]: With dead ends: 32 [2024-11-13 14:31:17,419 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 14:31:17,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:17,420 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:17,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 14:31:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-13 14:31:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.608695652173913) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-13 14:31:17,425 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 9 [2024-11-13 14:31:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:17,425 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-13 14:31:17,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-13 14:31:17,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:31:17,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:17,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:17,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:31:17,426 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:17,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash -534039921, now seen corresponding path program 1 times [2024-11-13 14:31:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:17,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327062456] [2024-11-13 14:31:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:17,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:17,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:17,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327062456] [2024-11-13 14:31:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327062456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:17,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:31:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102924190] [2024-11-13 14:31:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:17,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:31:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:17,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:31:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:31:17,608 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:17,762 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-13 14:31:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:31:17,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 14:31:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:17,766 INFO L225 Difference]: With dead ends: 51 [2024-11-13 14:31:17,767 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 14:31:17,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:31:17,769 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:17,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 96 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 14:31:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2024-11-13 14:31:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-13 14:31:17,777 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 9 [2024-11-13 14:31:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:17,778 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-13 14:31:17,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-13 14:31:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:31:17,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:17,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:17,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:31:17,779 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:17,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1693144941, now seen corresponding path program 1 times [2024-11-13 14:31:17,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179019841] [2024-11-13 14:31:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:17,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:17,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179019841] [2024-11-13 14:31:17,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179019841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:17,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:17,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:31:17,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184832180] [2024-11-13 14:31:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:17,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:31:17,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:31:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:31:17,899 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:18,010 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-11-13 14:31:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:31:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:31:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:18,011 INFO L225 Difference]: With dead ends: 32 [2024-11-13 14:31:18,011 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 14:31:18,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:31:18,013 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:18,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 49 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 14:31:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-13 14:31:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-13 14:31:18,024 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 13 [2024-11-13 14:31:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:18,025 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-13 14:31:18,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-13 14:31:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:31:18,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:18,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:18,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:31:18,027 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:18,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1693144940, now seen corresponding path program 1 times [2024-11-13 14:31:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493416308] [2024-11-13 14:31:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:18,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493416308] [2024-11-13 14:31:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493416308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:18,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:31:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011465501] [2024-11-13 14:31:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:18,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:31:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:31:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:31:18,375 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:18,528 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-11-13 14:31:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:31:18,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:31:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:18,530 INFO L225 Difference]: With dead ends: 39 [2024-11-13 14:31:18,530 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 14:31:18,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:18,531 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:18,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 88 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 14:31:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 14:31:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-13 14:31:18,540 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 13 [2024-11-13 14:31:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:18,540 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-13 14:31:18,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-13 14:31:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:31:18,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:18,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:18,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:31:18,545 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:18,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1693164838, now seen corresponding path program 1 times [2024-11-13 14:31:18,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:18,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166432635] [2024-11-13 14:31:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:18,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166432635] [2024-11-13 14:31:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166432635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:18,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:31:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989336723] [2024-11-13 14:31:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:18,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:31:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:31:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:18,787 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:18,828 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-13 14:31:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:31:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:31:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:18,830 INFO L225 Difference]: With dead ends: 38 [2024-11-13 14:31:18,830 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 14:31:18,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:31:18,831 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:18,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 14:31:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-13 14:31:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-13 14:31:18,835 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 13 [2024-11-13 14:31:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:18,836 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-13 14:31:18,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-13 14:31:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:31:18,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:18,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:18,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:31:18,837 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:18,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash 949935659, now seen corresponding path program 1 times [2024-11-13 14:31:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366136413] [2024-11-13 14:31:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:18,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366136413] [2024-11-13 14:31:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366136413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:18,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:31:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813167454] [2024-11-13 14:31:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:18,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:31:18,892 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:18,910 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-13 14:31:18,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:31:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-13 14:31:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:18,916 INFO L225 Difference]: With dead ends: 37 [2024-11-13 14:31:18,916 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:31:18,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:31:18,917 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:18,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:31:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 14:31:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.34375) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-13 14:31:18,921 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 17 [2024-11-13 14:31:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:18,921 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-13 14:31:18,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-13 14:31:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:31:18,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:18,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:18,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:31:18,930 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:18,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903913, now seen corresponding path program 1 times [2024-11-13 14:31:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19603567] [2024-11-13 14:31:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:18,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19603567] [2024-11-13 14:31:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19603567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:19,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:19,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:31:19,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632144457] [2024-11-13 14:31:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:19,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:31:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:31:19,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:31:19,214 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:19,470 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-13 14:31:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:31:19,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:31:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:19,472 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:31:19,473 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:31:19,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:31:19,474 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:19,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 105 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:31:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 14:31:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-13 14:31:19,483 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 19 [2024-11-13 14:31:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:19,484 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-13 14:31:19,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-13 14:31:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:31:19,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:19,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:19,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:31:19,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:19,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1945725016, now seen corresponding path program 1 times [2024-11-13 14:31:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829310705] [2024-11-13 14:31:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:31:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829310705] [2024-11-13 14:31:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829310705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:31:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260716754] [2024-11-13 14:31:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:19,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:31:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:31:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:31:19,869 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:19,944 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2024-11-13 14:31:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:31:19,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:31:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:19,945 INFO L225 Difference]: With dead ends: 44 [2024-11-13 14:31:19,946 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:31:19,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:19,947 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:19,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 117 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:31:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 14:31:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-13 14:31:19,955 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2024-11-13 14:31:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:19,956 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-13 14:31:19,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-13 14:31:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:31:19,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:19,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:19,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:31:19,959 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:19,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash 760894378, now seen corresponding path program 1 times [2024-11-13 14:31:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329509944] [2024-11-13 14:31:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329509944] [2024-11-13 14:31:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329509944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:20,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:31:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330953979] [2024-11-13 14:31:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:20,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:31:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:20,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:31:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:31:20,343 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:20,520 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2024-11-13 14:31:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:31:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:31:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:20,522 INFO L225 Difference]: With dead ends: 48 [2024-11-13 14:31:20,522 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:31:20,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:31:20,523 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:20,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 135 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:31:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:31:20,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 14:31:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-13 14:31:20,531 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 19 [2024-11-13 14:31:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:20,532 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-13 14:31:20,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-13 14:31:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:31:20,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:20,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:20,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:31:20,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:20,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash -260173976, now seen corresponding path program 1 times [2024-11-13 14:31:20,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:20,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380104167] [2024-11-13 14:31:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380104167] [2024-11-13 14:31:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380104167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597357811] [2024-11-13 14:31:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:21,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:21,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:21,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:31:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:21,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 14:31:21,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:21,485 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 [2024-11-13 14:31:21,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:31:21,899 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 17 treesize of output 15 [2024-11-13 14:31:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:22,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:22,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-13 14:31:22,765 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 13 treesize of output 11 [2024-11-13 14:31:22,778 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 14 treesize of output 12 [2024-11-13 14:31:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597357811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:22,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:22,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-13 14:31:22,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101340440] [2024-11-13 14:31:22,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:22,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:31:22,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:22,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:31:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:31:22,852 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 26 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:23,699 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-11-13 14:31:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:31:23,700 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:31:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:23,701 INFO L225 Difference]: With dead ends: 44 [2024-11-13 14:31:23,701 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 14:31:23,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:31:23,702 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 108 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:23,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 131 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:31:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 14:31:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-13 14:31:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-13 14:31:23,709 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 19 [2024-11-13 14:31:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:23,709 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-13 14:31:23,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-13 14:31:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 14:31:23,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:23,711 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] [2024-11-13 14:31:23,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:31:23,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:31:23,913 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:23,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash -919125932, now seen corresponding path program 1 times [2024-11-13 14:31:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870030778] [2024-11-13 14:31:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870030778] [2024-11-13 14:31:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870030778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701962239] [2024-11-13 14:31:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:24,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:31:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:24,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 14:31:24,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:24,644 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 14 treesize of output 10 [2024-11-13 14:31:25,076 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 14:31:25,077 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 26 treesize of output 19 [2024-11-13 14:31:25,225 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 7 treesize of output 3 [2024-11-13 14:31:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:25,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:25,459 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 8 treesize of output 4 [2024-11-13 14:31:25,721 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 13 treesize of output 11 [2024-11-13 14:31:25,734 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 [2024-11-13 14:31:25,745 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 13 treesize of output 9 [2024-11-13 14:31:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:25,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701962239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:25,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:25,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-11-13 14:31:25,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482116894] [2024-11-13 14:31:25,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:25,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:31:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:31:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:31:25,764 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:26,277 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2024-11-13 14:31:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:31:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-13 14:31:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:26,279 INFO L225 Difference]: With dead ends: 89 [2024-11-13 14:31:26,279 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 14:31:26,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:31:26,280 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 93 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:26,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 150 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:31:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 14:31:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 68. [2024-11-13 14:31:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 67 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2024-11-13 14:31:26,285 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2024-11-13 14:31:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:26,286 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2024-11-13 14:31:26,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 24 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2024-11-13 14:31:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:31:26,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:26,287 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:26,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:31:26,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:31:26,491 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:26,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash -118190212, now seen corresponding path program 2 times [2024-11-13 14:31:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107270237] [2024-11-13 14:31:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:27,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107270237] [2024-11-13 14:31:27,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107270237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183969754] [2024-11-13 14:31:27,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:31:27,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:27,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:27,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:31:27,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:31:27,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:27,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 14:31:27,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:27,567 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 14 treesize of output 10 [2024-11-13 14:31:28,249 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-13 14:31:28,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2024-11-13 14:31:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:28,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:29,199 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 29 treesize of output 25 [2024-11-13 14:31:29,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:31:29,209 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 29 treesize of output 23 [2024-11-13 14:31:29,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-13 14:31:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183969754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:29,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:29,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 34 [2024-11-13 14:31:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053095921] [2024-11-13 14:31:29,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:29,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 14:31:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 14:31:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 14:31:29,377 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 35 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:31,502 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2024-11-13 14:31:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:31:31,503 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 35 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-13 14:31:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:31,504 INFO L225 Difference]: With dead ends: 88 [2024-11-13 14:31:31,504 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 14:31:31,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=365, Invalid=2085, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 14:31:31,506 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 81 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:31,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 161 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:31:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 14:31:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 46. [2024-11-13 14:31:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-13 14:31:31,518 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 25 [2024-11-13 14:31:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:31,518 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-13 14:31:31,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 35 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-13 14:31:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 14:31:31,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:31,520 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:31,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:31:31,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:31:31,721 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 14:31:31,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash 350793182, now seen corresponding path program 2 times [2024-11-13 14:31:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:31,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651070405] [2024-11-13 14:31:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:33,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651070405] [2024-11-13 14:31:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651070405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:33,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316849229] [2024-11-13 14:31:33,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:31:33,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:33,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:33,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:31:33,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:31:33,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:33,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 14:31:33,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:33,732 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 14 treesize of output 10 [2024-11-13 14:32:40,568 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-13 14:32:40,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 45 [2024-11-13 14:32:41,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:32:41,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 48 [2024-11-13 14:32:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 21 refuted. 16 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:41,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:43,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:32:43,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 58 [2024-11-13 14:32:44,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-13 14:32:44,110 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 44 treesize of output 38 [2024-11-13 14:32:44,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2024-11-13 14:32:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:32:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316849229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:44,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:44,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 24] total 61 [2024-11-13 14:32:44,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830399003] [2024-11-13 14:32:44,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:44,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 14:32:44,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 14:32:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=3331, Unknown=16, NotChecked=0, Total=3782 [2024-11-13 14:32:44,287 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 62 states, 61 states have (on average 2.098360655737705) internal successors, (128), 62 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:20,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:33:32,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:34:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:34:02,846 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2024-11-13 14:34:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 14:34:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.098360655737705) internal successors, (128), 62 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-13 14:34:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:34:02,847 INFO L225 Difference]: With dead ends: 78 [2024-11-13 14:34:02,847 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 14:34:02,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 132.9s TimeCoverageRelationStatistics Valid=1333, Invalid=7751, Unknown=36, NotChecked=0, Total=9120 [2024-11-13 14:34:02,853 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:34:02,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 472 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1099 Invalid, 11 Unknown, 0 Unchecked, 14.7s Time] [2024-11-13 14:34:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 14:34:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 14:34:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:34:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 14:34:02,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2024-11-13 14:34:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:34:02,854 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:34:02,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.098360655737705) internal successors, (128), 62 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:34:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:34:02,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 14:34:02,858 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2024-11-13 14:34:02,859 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2024-11-13 14:34:02,859 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-11-13 14:34:02,859 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-11-13 14:34:02,859 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-13 14:34:02,860 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-13 14:34:02,860 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-13 14:34:02,860 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-13 14:34:02,860 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-13 14:34:02,860 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-11-13 14:34:02,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-13 14:34:02,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-13 14:34:02,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2024-11-13 14:34:02,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-13 14:34:02,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-13 14:34:02,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:34:03,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:03,064 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:34:03,067 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:34:03,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:34:03 BoogieIcfgContainer [2024-11-13 14:34:03,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:34:03,071 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:34:03,071 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:34:03,071 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:34:03,072 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:31:14" (3/4) ... [2024-11-13 14:34:03,074 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:34:03,082 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-13 14:34:03,082 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 14:34:03,082 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 14:34:03,083 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:34:03,184 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:34:03,185 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 14:34:03,185 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:34:03,186 INFO L158 Benchmark]: Toolchain (without parser) took 170110.86ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 82.8MB in the beginning and 135.8MB in the end (delta: -53.0MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2024-11-13 14:34:03,187 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:34:03,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.52ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 64.3MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:34:03,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.62ms. Allocated memory is still 109.1MB. Free memory was 64.3MB in the beginning and 62.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:34:03,190 INFO L158 Benchmark]: Boogie Preprocessor took 63.13ms. Allocated memory is still 109.1MB. Free memory was 62.8MB in the beginning and 61.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:34:03,190 INFO L158 Benchmark]: RCFGBuilder took 673.87ms. Allocated memory is still 109.1MB. Free memory was 61.0MB in the beginning and 46.7MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:34:03,191 INFO L158 Benchmark]: TraceAbstraction took 168550.38ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 45.9MB in the beginning and 47.6MB in the end (delta: -1.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2024-11-13 14:34:03,191 INFO L158 Benchmark]: Witness Printer took 113.82ms. Allocated memory is still 167.8MB. Free memory was 47.6MB in the beginning and 135.8MB in the end (delta: -88.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:34:03,193 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.52ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 64.3MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.62ms. Allocated memory is still 109.1MB. Free memory was 64.3MB in the beginning and 62.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.13ms. Allocated memory is still 109.1MB. Free memory was 62.8MB in the beginning and 61.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 673.87ms. Allocated memory is still 109.1MB. Free memory was 61.0MB in the beginning and 46.7MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 168550.38ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 45.9MB in the beginning and 47.6MB in the end (delta: -1.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Witness Printer took 113.82ms. Allocated memory is still 167.8MB. Free memory was 47.6MB in the beginning and 135.8MB in the end (delta: -88.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 379]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 168.5s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 83.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 550 SdHoareTripleChecker+Valid, 16.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 550 mSDsluCounter, 2082 SdHoareTripleChecker+Invalid, 16.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1601 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2539 IncrementalHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 481 mSDtfsCounter, 2539 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3024 ImplicationChecksByTransitivity, 138.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=17, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 82.3s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 473 ConstructedInterpolants, 86 QuantifiedInterpolants, 7886 SizeOfPredicates, 40 NumberOfNonLiveVariables, 614 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 7/151 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 14:34:03,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c084b6fd-8931-443c-a9d8-ba3c9a8445db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE