./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:42:42,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:42:42,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-06 22:42:42,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:42:42,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:42:42,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:42:42,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:42:42,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:42:42,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:42:42,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:42:42,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:42:42,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:42:42,901 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:42:42,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:42:42,903 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:42:42,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:42:42,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:42:42,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:42:42,905 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:42:42,906 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:42:42,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:42:42,907 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:42:42,907 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:42:42,909 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:42:42,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:42:42,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:42:42,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:42:42,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:42:42,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:42,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:42:42,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:42:42,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:42:42,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:42:42,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:42:42,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:42:42,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:42:42,915 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:42:42,916 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b55b51cb0b3b4f908f36b1c6f95a18eadc174b8702aa08ef4d6f9775df6bb52 [2023-11-06 22:42:43,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:42:43,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:42:43,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:42:43,244 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:42:43,244 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:42:43,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2023-11-06 22:42:46,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:42:46,929 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:42:46,930 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2023-11-06 22:42:46,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/data/db258fa96/811cfa0f2bf140e791317d0731cfda74/FLAG02dae5ac8 [2023-11-06 22:42:46,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/data/db258fa96/811cfa0f2bf140e791317d0731cfda74 [2023-11-06 22:42:46,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:42:46,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:42:46,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:46,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:42:47,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:42:47,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:46" (1/1) ... [2023-11-06 22:42:47,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebf683f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47, skipping insertion in model container [2023-11-06 22:42:47,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:42:46" (1/1) ... [2023-11-06 22:42:47,063 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:42:47,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:47,525 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:42:47,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:42:47,613 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:42:47,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47 WrapperNode [2023-11-06 22:42:47,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:42:47,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:47,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:42:47,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:42:47,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,676 INFO L138 Inliner]: procedures = 119, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 199 [2023-11-06 22:42:47,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:42:47,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:42:47,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:42:47,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:42:47,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:42:47,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:42:47,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:42:47,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:42:47,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (1/1) ... [2023-11-06 22:42:47,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:47,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:42:47,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:42:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 22:42:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 22:42:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:42:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:42:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:42:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:42:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:42:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:42:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:42:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:42:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:42:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:42:48,068 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:42:48,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:42:48,769 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:42:48,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:42:48,778 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-06 22:42:48,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:48 BoogieIcfgContainer [2023-11-06 22:42:48,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:42:48,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:42:48,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:42:48,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:42:48,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:42:46" (1/3) ... [2023-11-06 22:42:48,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de87f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:48, skipping insertion in model container [2023-11-06 22:42:48,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:42:47" (2/3) ... [2023-11-06 22:42:48,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de87f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:42:48, skipping insertion in model container [2023-11-06 22:42:48,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:42:48" (3/3) ... [2023-11-06 22:42:48,804 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2023-11-06 22:42:48,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:42:48,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2023-11-06 22:42:48,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:42:48,931 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@378535eb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:42:48,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-06 22:42:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 101 states have (on average 2.108910891089109) internal successors, (213), 176 states have internal predecessors, (213), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:42:48,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:42:48,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:48,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:42:48,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:48,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2023-11-06 22:42:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:48,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277167786] [2023-11-06 22:42:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:48,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:49,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:49,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277167786] [2023-11-06 22:42:49,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277167786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:49,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:49,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358996634] [2023-11-06 22:42:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:49,335 INFO L87 Difference]: Start difference. First operand has 184 states, 101 states have (on average 2.108910891089109) internal successors, (213), 176 states have internal predecessors, (213), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:42:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:49,646 INFO L93 Difference]: Finished difference Result 177 states and 194 transitions. [2023-11-06 22:42:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:42:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:49,663 INFO L225 Difference]: With dead ends: 177 [2023-11-06 22:42:49,663 INFO L226 Difference]: Without dead ends: 175 [2023-11-06 22:42:49,665 INFO L412 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 [2023-11-06 22:42:49,670 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 164 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:49,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 122 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:42:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-06 22:42:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2023-11-06 22:42:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 93 states have (on average 1.946236559139785) internal successors, (181), 169 states have internal predecessors, (181), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2023-11-06 22:42:49,715 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 3 [2023-11-06 22:42:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:49,716 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2023-11-06 22:42:49,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:42:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2023-11-06 22:42:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:42:49,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:49,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:42:49,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:42:49,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:49,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2023-11-06 22:42:49,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:49,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254228499] [2023-11-06 22:42:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254228499] [2023-11-06 22:42:49,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254228499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:49,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:49,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:49,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828939228] [2023-11-06 22:42:49,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:49,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:49,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:49,879 INFO L87 Difference]: Start difference. First operand 171 states and 187 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:42:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:50,073 INFO L93 Difference]: Finished difference Result 172 states and 188 transitions. [2023-11-06 22:42:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 22:42:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:50,075 INFO L225 Difference]: With dead ends: 172 [2023-11-06 22:42:50,075 INFO L226 Difference]: Without dead ends: 172 [2023-11-06 22:42:50,076 INFO L412 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 [2023-11-06 22:42:50,077 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:50,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 120 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:42:50,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-06 22:42:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2023-11-06 22:42:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.913978494623656) internal successors, (178), 166 states have internal predecessors, (178), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 184 transitions. [2023-11-06 22:42:50,099 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 184 transitions. Word has length 3 [2023-11-06 22:42:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:50,099 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 184 transitions. [2023-11-06 22:42:50,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 22:42:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 184 transitions. [2023-11-06 22:42:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:42:50,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:50,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:50,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:42:50,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:50,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash 919164531, now seen corresponding path program 1 times [2023-11-06 22:42:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487149286] [2023-11-06 22:42:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:50,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:50,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487149286] [2023-11-06 22:42:50,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487149286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:50,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465803596] [2023-11-06 22:42:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:50,335 INFO L87 Difference]: Start difference. First operand 168 states and 184 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) [2023-11-06 22:42:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:50,630 INFO L93 Difference]: Finished difference Result 175 states and 194 transitions. [2023-11-06 22:42:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:50,631 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 [2023-11-06 22:42:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:50,635 INFO L225 Difference]: With dead ends: 175 [2023-11-06 22:42:50,636 INFO L226 Difference]: Without dead ends: 175 [2023-11-06 22:42:50,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:50,644 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 286 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:50,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 95 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:42:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-06 22:42:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 164. [2023-11-06 22:42:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.7289719626168225) internal successors, (185), 162 states have internal predecessors, (185), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 191 transitions. [2023-11-06 22:42:50,668 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 191 transitions. Word has length 9 [2023-11-06 22:42:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:50,669 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 191 transitions. [2023-11-06 22:42:50,670 INFO L496 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) [2023-11-06 22:42:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 191 transitions. [2023-11-06 22:42:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 22:42:50,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:50,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:50,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:42:50,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:50,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 919164532, now seen corresponding path program 1 times [2023-11-06 22:42:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948142777] [2023-11-06 22:42:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948142777] [2023-11-06 22:42:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948142777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:42:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242179443] [2023-11-06 22:42:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:42:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:42:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:42:51,051 INFO L87 Difference]: Start difference. First operand 164 states and 191 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) [2023-11-06 22:42:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:51,535 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2023-11-06 22:42:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:42:51,536 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 [2023-11-06 22:42:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:51,537 INFO L225 Difference]: With dead ends: 251 [2023-11-06 22:42:51,538 INFO L226 Difference]: Without dead ends: 251 [2023-11-06 22:42:51,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:51,539 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 564 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:51,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 180 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:42:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-06 22:42:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 217. [2023-11-06 22:42:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 160 states have (on average 1.625) internal successors, (260), 215 states have internal predecessors, (260), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 266 transitions. [2023-11-06 22:42:51,553 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 266 transitions. Word has length 9 [2023-11-06 22:42:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:51,553 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 266 transitions. [2023-11-06 22:42:51,554 INFO L496 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) [2023-11-06 22:42:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 266 transitions. [2023-11-06 22:42:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:42:51,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:51,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:51,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:42:51,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:51,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1801951228, now seen corresponding path program 1 times [2023-11-06 22:42:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:51,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937961055] [2023-11-06 22:42:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:51,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:51,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:51,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937961055] [2023-11-06 22:42:51,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937961055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:51,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136699211] [2023-11-06 22:42:51,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:51,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:51,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:51,592 INFO L87 Difference]: Start difference. First operand 217 states and 266 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:51,614 INFO L93 Difference]: Finished difference Result 263 states and 315 transitions. [2023-11-06 22:42:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:51,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:42:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:51,617 INFO L225 Difference]: With dead ends: 263 [2023-11-06 22:42:51,617 INFO L226 Difference]: Without dead ends: 263 [2023-11-06 22:42:51,617 INFO L412 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 [2023-11-06 22:42:51,618 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 119 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:51,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 237 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-06 22:42:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 230. [2023-11-06 22:42:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 173 states have (on average 1.6184971098265897) internal successors, (280), 228 states have internal predecessors, (280), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 286 transitions. [2023-11-06 22:42:51,629 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 286 transitions. Word has length 13 [2023-11-06 22:42:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:51,630 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 286 transitions. [2023-11-06 22:42:51,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 286 transitions. [2023-11-06 22:42:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 22:42:51,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:51,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:42:51,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:51,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1880931275, now seen corresponding path program 1 times [2023-11-06 22:42:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:51,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768254957] [2023-11-06 22:42:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:51,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:51,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768254957] [2023-11-06 22:42:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768254957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:51,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:51,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979205422] [2023-11-06 22:42:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:51,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:51,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:51,738 INFO L87 Difference]: Start difference. First operand 230 states and 286 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 22:42:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:51,974 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2023-11-06 22:42:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:42:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-11-06 22:42:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:51,977 INFO L225 Difference]: With dead ends: 229 [2023-11-06 22:42:51,977 INFO L226 Difference]: Without dead ends: 229 [2023-11-06 22:42:51,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:51,979 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 10 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:51,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 434 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:42:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-06 22:42:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-06 22:42:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 227 states have internal predecessors, (277), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 283 transitions. [2023-11-06 22:42:51,990 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 283 transitions. Word has length 12 [2023-11-06 22:42:51,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:51,990 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 283 transitions. [2023-11-06 22:42:51,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 22:42:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 283 transitions. [2023-11-06 22:42:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 22:42:51,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:51,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:51,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:42:51,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:51,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:51,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1880931274, now seen corresponding path program 1 times [2023-11-06 22:42:51,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918474413] [2023-11-06 22:42:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:52,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:52,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918474413] [2023-11-06 22:42:52,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918474413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:52,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:52,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:52,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015189759] [2023-11-06 22:42:52,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:52,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:52,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:52,263 INFO L87 Difference]: Start difference. First operand 229 states and 283 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 22:42:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:52,573 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2023-11-06 22:42:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:42:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-11-06 22:42:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:52,576 INFO L225 Difference]: With dead ends: 228 [2023-11-06 22:42:52,576 INFO L226 Difference]: Without dead ends: 228 [2023-11-06 22:42:52,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:52,577 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 5 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:52,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 414 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:42:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-06 22:42:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-11-06 22:42:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 173 states have (on average 1.583815028901734) internal successors, (274), 226 states have internal predecessors, (274), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 280 transitions. [2023-11-06 22:42:52,591 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 280 transitions. Word has length 12 [2023-11-06 22:42:52,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:52,591 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 280 transitions. [2023-11-06 22:42:52,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 22:42:52,591 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 280 transitions. [2023-11-06 22:42:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:42:52,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:52,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:42:52,593 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:52,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1483618057, now seen corresponding path program 1 times [2023-11-06 22:42:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088965293] [2023-11-06 22:42:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:52,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088965293] [2023-11-06 22:42:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088965293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:52,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:52,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:42:52,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191188919] [2023-11-06 22:42:52,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:52,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:42:52,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:52,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:42:52,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:42:52,944 INFO L87 Difference]: Start difference. First operand 228 states and 280 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-11-06 22:42:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:53,517 INFO L93 Difference]: Finished difference Result 234 states and 281 transitions. [2023-11-06 22:42:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:42:53,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 16 [2023-11-06 22:42:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:53,519 INFO L225 Difference]: With dead ends: 234 [2023-11-06 22:42:53,519 INFO L226 Difference]: Without dead ends: 234 [2023-11-06 22:42:53,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:42:53,521 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 284 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:53,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 283 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:42:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-06 22:42:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 227. [2023-11-06 22:42:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 173 states have (on average 1.5722543352601157) internal successors, (272), 225 states have internal predecessors, (272), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 278 transitions. [2023-11-06 22:42:53,529 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 278 transitions. Word has length 16 [2023-11-06 22:42:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:53,530 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 278 transitions. [2023-11-06 22:42:53,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-11-06 22:42:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 278 transitions. [2023-11-06 22:42:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:42:53,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:53,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:53,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:42:53,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:53,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1483618056, now seen corresponding path program 1 times [2023-11-06 22:42:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056673066] [2023-11-06 22:42:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:53,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:53,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056673066] [2023-11-06 22:42:53,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056673066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:53,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:53,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:42:53,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272317922] [2023-11-06 22:42:53,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:53,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:42:53,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:42:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:42:53,940 INFO L87 Difference]: Start difference. First operand 227 states and 278 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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) [2023-11-06 22:42:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:55,007 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2023-11-06 22:42:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:42:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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 16 [2023-11-06 22:42:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:55,010 INFO L225 Difference]: With dead ends: 229 [2023-11-06 22:42:55,010 INFO L226 Difference]: Without dead ends: 229 [2023-11-06 22:42:55,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:42:55,012 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 281 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:55,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 463 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:42:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-06 22:42:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 213. [2023-11-06 22:42:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 165 states have (on average 1.5393939393939393) internal successors, (254), 211 states have internal predecessors, (254), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 260 transitions. [2023-11-06 22:42:55,020 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 260 transitions. Word has length 16 [2023-11-06 22:42:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:55,021 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 260 transitions. [2023-11-06 22:42:55,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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) [2023-11-06 22:42:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 260 transitions. [2023-11-06 22:42:55,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:42:55,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:55,022 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:55,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:42:55,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:55,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1826649493, now seen corresponding path program 1 times [2023-11-06 22:42:55,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:55,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5396111] [2023-11-06 22:42:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:55,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:42:55,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:55,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5396111] [2023-11-06 22:42:55,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5396111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:55,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547473781] [2023-11-06 22:42:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:55,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:42:55,106 INFO L87 Difference]: Start difference. First operand 213 states and 260 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:55,314 INFO L93 Difference]: Finished difference Result 247 states and 278 transitions. [2023-11-06 22:42:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:42:55,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 22:42:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:55,317 INFO L225 Difference]: With dead ends: 247 [2023-11-06 22:42:55,317 INFO L226 Difference]: Without dead ends: 247 [2023-11-06 22:42:55,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:55,318 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 284 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:55,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 213 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:42:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-06 22:42:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 212. [2023-11-06 22:42:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 165 states have (on average 1.5212121212121212) internal successors, (251), 210 states have internal predecessors, (251), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 256 transitions. [2023-11-06 22:42:55,327 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 256 transitions. Word has length 27 [2023-11-06 22:42:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:55,328 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 256 transitions. [2023-11-06 22:42:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 256 transitions. [2023-11-06 22:42:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:42:55,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:55,329 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:55,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:42:55,330 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:42:55,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash 477037051, now seen corresponding path program 1 times [2023-11-06 22:42:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:55,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513313913] [2023-11-06 22:42:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:56,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:56,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513313913] [2023-11-06 22:42:56,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513313913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:56,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518895589] [2023-11-06 22:42:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:56,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:56,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:56,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:56,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:42:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:56,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:42:56,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:56,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:42:56,463 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:42:56,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:42:56,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:42:56,684 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:42:56,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-06 22:42:56,832 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 22:42:56,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2023-11-06 22:42:56,921 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:42:56,921 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2023-11-06 22:42:57,104 INFO L351 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 25 treesize of output 13 [2023-11-06 22:42:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:57,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:57,529 INFO L322 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2023-11-06 22:42:57,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:42:57,834 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_72| Int) (v_ArrVal_333 (Array Int Int)) (v_ArrVal_335 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_333))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_335) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_72|)))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_72|) (< |v_ULTIMATE.start_main_~x~0#1.offset_72| 0))) is different from false [2023-11-06 22:42:57,999 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:58,000 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2023-11-06 22:42:58,026 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:58,026 INFO L351 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 170 treesize of output 137 [2023-11-06 22:42:58,044 INFO L351 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 92 treesize of output 86 [2023-11-06 22:42:58,064 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:58,065 INFO L351 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 64 treesize of output 55 [2023-11-06 22:42:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518895589] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:58,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:58,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 34 [2023-11-06 22:42:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493111323] [2023-11-06 22:42:58,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:42:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:42:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1003, Unknown=14, NotChecked=64, Total=1190 [2023-11-06 22:42:58,596 INFO L87 Difference]: Start difference. First operand 212 states and 256 transitions. Second operand has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 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) [2023-11-06 22:43:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:01,454 INFO L93 Difference]: Finished difference Result 418 states and 486 transitions. [2023-11-06 22:43:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:43:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 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 31 [2023-11-06 22:43:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:01,458 INFO L225 Difference]: With dead ends: 418 [2023-11-06 22:43:01,459 INFO L226 Difference]: Without dead ends: 418 [2023-11-06 22:43:01,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=410, Invalid=2232, Unknown=14, NotChecked=100, Total=2756 [2023-11-06 22:43:01,461 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1684 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 436 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:01,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 1635 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2238 Invalid, 0 Unknown, 436 Unchecked, 1.9s Time] [2023-11-06 22:43:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-06 22:43:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 237. [2023-11-06 22:43:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 190 states have (on average 1.4789473684210526) internal successors, (281), 235 states have internal predecessors, (281), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 286 transitions. [2023-11-06 22:43:01,473 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 286 transitions. Word has length 31 [2023-11-06 22:43:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:01,474 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 286 transitions. [2023-11-06 22:43:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 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) [2023-11-06 22:43:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 286 transitions. [2023-11-06 22:43:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:43:01,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:01,480 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:01,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:01,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:43:01,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:01,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:01,688 INFO L85 PathProgramCache]: Analyzing trace with hash 477037052, now seen corresponding path program 1 times [2023-11-06 22:43:01,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:01,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907275562] [2023-11-06 22:43:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907275562] [2023-11-06 22:43:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907275562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769183374] [2023-11-06 22:43:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:02,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:02,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:02,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:43:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:02,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:43:02,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:02,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:43:02,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:43:02,736 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:43:02,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:43:02,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:43:02,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:43:02,955 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:43:02,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:43:02,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-06 22:43:03,133 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:43:03,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 22:43:03,161 INFO L322 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-06 22:43:03,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-06 22:43:03,303 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:43:03,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-06 22:43:03,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-06 22:43:03,565 INFO L351 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 25 treesize of output 13 [2023-11-06 22:43:03,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 22:43:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:03,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:04,763 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_432 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< 0 (+ 9 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_432) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_433) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_436) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (v_ArrVal_432 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_433))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (< (+ 11 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_432) .cse0 v_ArrVal_436) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|)))) is different from false [2023-11-06 22:43:04,816 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_432 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_432) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_433) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_436) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 9)))) (forall ((v_ArrVal_436 (Array Int Int)) (v_ArrVal_437 (Array Int Int)) (v_ArrVal_432 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| Int) (v_ArrVal_433 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_76| 0) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_433))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (< (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_432) .cse1 v_ArrVal_436) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|) 11) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_437) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_76|))))) is different from false [2023-11-06 22:43:04,885 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:04,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2023-11-06 22:43:04,896 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:04,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2023-11-06 22:43:04,926 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:04,927 INFO L351 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 632 treesize of output 567 [2023-11-06 22:43:04,997 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:04,998 INFO L351 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 1831 treesize of output 1742 [2023-11-06 22:43:05,118 INFO L351 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 547 treesize of output 523 [2023-11-06 22:43:05,145 INFO L351 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 523 treesize of output 499 [2023-11-06 22:43:05,176 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:05,176 INFO L351 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 499 treesize of output 455 [2023-11-06 22:43:05,202 INFO L351 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 447 treesize of output 439 [2023-11-06 22:43:05,930 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:05,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2023-11-06 22:43:05,945 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:05,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-11-06 22:43:05,952 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:43:05,957 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-11-06 22:43:05,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:43:05,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:05,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:05,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-06 22:43:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769183374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:06,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:06,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2023-11-06 22:43:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753559696] [2023-11-06 22:43:06,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:06,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-06 22:43:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-06 22:43:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=8, NotChecked=130, Total=1260 [2023-11-06 22:43:06,374 INFO L87 Difference]: Start difference. First operand 237 states and 286 transitions. Second operand has 36 states, 35 states have (on average 2.6) internal successors, (91), 36 states have internal predecessors, (91), 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) [2023-11-06 22:43:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:09,937 INFO L93 Difference]: Finished difference Result 409 states and 477 transitions. [2023-11-06 22:43:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:43:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.6) internal successors, (91), 36 states have internal predecessors, (91), 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 31 [2023-11-06 22:43:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:09,943 INFO L225 Difference]: With dead ends: 409 [2023-11-06 22:43:09,943 INFO L226 Difference]: Without dead ends: 409 [2023-11-06 22:43:09,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=424, Invalid=2228, Unknown=8, NotChecked=202, Total=2862 [2023-11-06 22:43:09,946 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1672 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 863 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:09,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 1390 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2142 Invalid, 0 Unknown, 863 Unchecked, 2.3s Time] [2023-11-06 22:43:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-06 22:43:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 237. [2023-11-06 22:43:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 190 states have (on average 1.4736842105263157) internal successors, (280), 235 states have internal predecessors, (280), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2023-11-06 22:43:09,956 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 31 [2023-11-06 22:43:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:09,956 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2023-11-06 22:43:09,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.6) internal successors, (91), 36 states have internal predecessors, (91), 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) [2023-11-06 22:43:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2023-11-06 22:43:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:43:09,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:09,958 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:09,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:43:10,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:10,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1120151479, now seen corresponding path program 1 times [2023-11-06 22:43:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315949725] [2023-11-06 22:43:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315949725] [2023-11-06 22:43:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315949725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:10,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:43:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032223112] [2023-11-06 22:43:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:10,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:43:10,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:43:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:10,249 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-06 22:43:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:10,267 INFO L93 Difference]: Finished difference Result 239 states and 287 transitions. [2023-11-06 22:43:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:43:10,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 33 [2023-11-06 22:43:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:10,270 INFO L225 Difference]: With dead ends: 239 [2023-11-06 22:43:10,270 INFO L226 Difference]: Without dead ends: 239 [2023-11-06 22:43:10,271 INFO L412 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 [2023-11-06 22:43:10,272 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 302 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 [2023-11-06 22:43:10,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:43:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-06 22:43:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-06 22:43:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 192 states have (on average 1.46875) internal successors, (282), 237 states have internal predecessors, (282), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 287 transitions. [2023-11-06 22:43:10,282 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 287 transitions. Word has length 33 [2023-11-06 22:43:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:10,284 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 287 transitions. [2023-11-06 22:43:10,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-06 22:43:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 287 transitions. [2023-11-06 22:43:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:43:10,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:10,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:43:10,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:10,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1231280740, now seen corresponding path program 1 times [2023-11-06 22:43:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089487474] [2023-11-06 22:43:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:10,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089487474] [2023-11-06 22:43:10,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089487474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:10,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:10,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:43:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920232509] [2023-11-06 22:43:10,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:10,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:10,450 INFO L87 Difference]: Start difference. First operand 239 states and 287 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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) [2023-11-06 22:43:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:10,866 INFO L93 Difference]: Finished difference Result 264 states and 317 transitions. [2023-11-06 22:43:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:43:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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) Word has length 36 [2023-11-06 22:43:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:10,869 INFO L225 Difference]: With dead ends: 264 [2023-11-06 22:43:10,870 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 22:43:10,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:43:10,871 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 116 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:10,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 362 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:43:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 22:43:10,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 238. [2023-11-06 22:43:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 192 states have (on average 1.4635416666666667) internal successors, (281), 236 states have internal predecessors, (281), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2023-11-06 22:43:10,881 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 36 [2023-11-06 22:43:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:10,881 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2023-11-06 22:43:10,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 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) [2023-11-06 22:43:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2023-11-06 22:43:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:43:10,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:10,884 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:43:10,886 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:10,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1231280739, now seen corresponding path program 1 times [2023-11-06 22:43:10,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:10,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994087005] [2023-11-06 22:43:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994087005] [2023-11-06 22:43:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994087005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135869710] [2023-11-06 22:43:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:11,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:11,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:11,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:11,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:43:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:11,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 22:43:11,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:12,076 INFO L322 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-11-06 22:43:12,076 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2023-11-06 22:43:12,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:12,180 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:43:12,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2023-11-06 22:43:12,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-11-06 22:43:12,693 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:12,693 INFO L351 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 33 treesize of output 29 [2023-11-06 22:43:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:12,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:12,859 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:12,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2023-11-06 22:43:13,523 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:43:13,524 INFO L351 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 183 treesize of output 182 [2023-11-06 22:43:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135869710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:13,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:13,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 37 [2023-11-06 22:43:13,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609760732] [2023-11-06 22:43:13,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:13,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-06 22:43:13,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-06 22:43:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 22:43:13,864 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 38 states, 37 states have (on average 2.810810810810811) internal successors, (104), 38 states have internal predecessors, (104), 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) [2023-11-06 22:43:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:19,018 INFO L93 Difference]: Finished difference Result 453 states and 526 transitions. [2023-11-06 22:43:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-06 22:43:19,019 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.810810810810811) internal successors, (104), 38 states have internal predecessors, (104), 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 36 [2023-11-06 22:43:19,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:19,022 INFO L225 Difference]: With dead ends: 453 [2023-11-06 22:43:19,022 INFO L226 Difference]: Without dead ends: 453 [2023-11-06 22:43:19,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1397, Invalid=5743, Unknown=0, NotChecked=0, Total=7140 [2023-11-06 22:43:19,026 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 2142 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:19,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 1716 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:43:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-06 22:43:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 263. [2023-11-06 22:43:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 224 states have (on average 1.3794642857142858) internal successors, (309), 261 states have internal predecessors, (309), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 314 transitions. [2023-11-06 22:43:19,037 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 314 transitions. Word has length 36 [2023-11-06 22:43:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:19,037 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 314 transitions. [2023-11-06 22:43:19,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.810810810810811) internal successors, (104), 38 states have internal predecessors, (104), 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) [2023-11-06 22:43:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 314 transitions. [2023-11-06 22:43:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:43:19,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:19,039 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:19,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:19,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:43:19,246 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:19,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash -15059330, now seen corresponding path program 1 times [2023-11-06 22:43:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260520577] [2023-11-06 22:43:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260520577] [2023-11-06 22:43:19,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260520577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:19,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:19,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:43:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397928817] [2023-11-06 22:43:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:19,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:19,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:19,495 INFO L87 Difference]: Start difference. First operand 263 states and 314 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) [2023-11-06 22:43:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:19,786 INFO L93 Difference]: Finished difference Result 279 states and 332 transitions. [2023-11-06 22:43:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:43:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) Word has length 36 [2023-11-06 22:43:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:19,789 INFO L225 Difference]: With dead ends: 279 [2023-11-06 22:43:19,789 INFO L226 Difference]: Without dead ends: 279 [2023-11-06 22:43:19,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:43:19,790 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 31 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:19,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 613 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:43:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-06 22:43:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 271. [2023-11-06 22:43:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 232 states have (on average 1.3663793103448276) internal successors, (317), 269 states have internal predecessors, (317), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 322 transitions. [2023-11-06 22:43:19,799 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 322 transitions. Word has length 36 [2023-11-06 22:43:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:19,800 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 322 transitions. [2023-11-06 22:43:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) [2023-11-06 22:43:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 322 transitions. [2023-11-06 22:43:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:43:19,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:19,801 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:19,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:43:19,801 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:19,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash -14999748, now seen corresponding path program 1 times [2023-11-06 22:43:19,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:19,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873362815] [2023-11-06 22:43:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:19,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:19,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873362815] [2023-11-06 22:43:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873362815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:19,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:19,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:43:19,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280518951] [2023-11-06 22:43:19,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:19,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:43:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:43:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:19,906 INFO L87 Difference]: Start difference. First operand 271 states and 322 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 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) [2023-11-06 22:43:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:20,014 INFO L93 Difference]: Finished difference Result 268 states and 315 transitions. [2023-11-06 22:43:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:43:20,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 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) Word has length 36 [2023-11-06 22:43:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:20,017 INFO L225 Difference]: With dead ends: 268 [2023-11-06 22:43:20,017 INFO L226 Difference]: Without dead ends: 268 [2023-11-06 22:43:20,017 INFO L412 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 [2023-11-06 22:43:20,019 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:20,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 163 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:43:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-06 22:43:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-11-06 22:43:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 232 states have (on average 1.3362068965517242) internal successors, (310), 265 states have internal predecessors, (310), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 315 transitions. [2023-11-06 22:43:20,028 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 315 transitions. Word has length 36 [2023-11-06 22:43:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:20,029 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 315 transitions. [2023-11-06 22:43:20,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 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) [2023-11-06 22:43:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 315 transitions. [2023-11-06 22:43:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:43:20,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:20,030 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:20,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:43:20,032 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:20,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:20,033 INFO L85 PathProgramCache]: Analyzing trace with hash -14999747, now seen corresponding path program 1 times [2023-11-06 22:43:20,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:20,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840619763] [2023-11-06 22:43:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:20,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840619763] [2023-11-06 22:43:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840619763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:43:20,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733483244] [2023-11-06 22:43:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:20,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:43:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:43:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:43:20,155 INFO L87 Difference]: Start difference. First operand 267 states and 315 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 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) [2023-11-06 22:43:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:20,276 INFO L93 Difference]: Finished difference Result 263 states and 308 transitions. [2023-11-06 22:43:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:43:20,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 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) Word has length 36 [2023-11-06 22:43:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:20,281 INFO L225 Difference]: With dead ends: 263 [2023-11-06 22:43:20,281 INFO L226 Difference]: Without dead ends: 263 [2023-11-06 22:43:20,281 INFO L412 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 [2023-11-06 22:43:20,282 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 74 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:20,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:43:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-06 22:43:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-11-06 22:43:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 232 states have (on average 1.3060344827586208) internal successors, (303), 261 states have internal predecessors, (303), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 308 transitions. [2023-11-06 22:43:20,291 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 308 transitions. Word has length 36 [2023-11-06 22:43:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:20,291 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 308 transitions. [2023-11-06 22:43:20,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 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) [2023-11-06 22:43:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 308 transitions. [2023-11-06 22:43:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:43:20,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:20,293 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:20,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:43:20,293 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:20,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1865449993, now seen corresponding path program 1 times [2023-11-06 22:43:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:20,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603799045] [2023-11-06 22:43:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603799045] [2023-11-06 22:43:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603799045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:20,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:20,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:43:20,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044502920] [2023-11-06 22:43:20,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:20,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:20,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:20,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:20,441 INFO L87 Difference]: Start difference. First operand 263 states and 308 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 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) [2023-11-06 22:43:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:20,782 INFO L93 Difference]: Finished difference Result 283 states and 329 transitions. [2023-11-06 22:43:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:43:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 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) Word has length 40 [2023-11-06 22:43:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:20,786 INFO L225 Difference]: With dead ends: 283 [2023-11-06 22:43:20,786 INFO L226 Difference]: Without dead ends: 283 [2023-11-06 22:43:20,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:43:20,787 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 96 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:20,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 334 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:43:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-06 22:43:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2023-11-06 22:43:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 238 states have (on average 1.3109243697478992) internal successors, (312), 267 states have internal predecessors, (312), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 317 transitions. [2023-11-06 22:43:20,797 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 317 transitions. Word has length 40 [2023-11-06 22:43:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:20,798 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 317 transitions. [2023-11-06 22:43:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 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) [2023-11-06 22:43:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 317 transitions. [2023-11-06 22:43:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:43:20,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:20,800 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:20,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:43:20,800 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:20,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1865449994, now seen corresponding path program 1 times [2023-11-06 22:43:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:20,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746284553] [2023-11-06 22:43:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:21,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746284553] [2023-11-06 22:43:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746284553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199353483] [2023-11-06 22:43:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:21,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:21,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:21,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:43:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:21,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:43:21,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:21,924 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-11-06 22:43:21,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-06 22:43:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:43:21,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199353483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:21,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:43:21,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-11-06 22:43:21,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190013627] [2023-11-06 22:43:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:21,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:22,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:43:22,000 INFO L87 Difference]: Start difference. First operand 269 states and 317 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 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) [2023-11-06 22:43:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:22,398 INFO L93 Difference]: Finished difference Result 278 states and 324 transitions. [2023-11-06 22:43:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:43:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 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) Word has length 40 [2023-11-06 22:43:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:22,400 INFO L225 Difference]: With dead ends: 278 [2023-11-06 22:43:22,401 INFO L226 Difference]: Without dead ends: 278 [2023-11-06 22:43:22,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:43:22,402 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 48 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:22,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 412 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:43:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-06 22:43:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 267. [2023-11-06 22:43:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 265 states have internal predecessors, (307), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 312 transitions. [2023-11-06 22:43:22,412 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 312 transitions. Word has length 40 [2023-11-06 22:43:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:22,413 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 312 transitions. [2023-11-06 22:43:22,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 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) [2023-11-06 22:43:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 312 transitions. [2023-11-06 22:43:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:43:22,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:22,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:22,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:22,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:22,625 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-06 22:43:22,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 448294050, now seen corresponding path program 1 times [2023-11-06 22:43:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:22,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275628804] [2023-11-06 22:43:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:23,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:23,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275628804] [2023-11-06 22:43:23,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275628804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:23,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139354849] [2023-11-06 22:43:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:23,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:23,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:23,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:23,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b08497-a772-449c-81a5-ef9ffee5815f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:43:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:23,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-06 22:43:23,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:23,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:43:23,812 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:43:23,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 22:43:23,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:43:23,981 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-06 22:43:23,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-06 22:43:24,118 INFO L322 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-06 22:43:24,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-06 22:43:24,130 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:43:24,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:43:24,272 INFO L322 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-06 22:43:24,272 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 90 [2023-11-06 22:43:24,287 INFO L322 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2023-11-06 22:43:24,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 65 [2023-11-06 22:43:25,315 INFO L322 Elim1Store]: treesize reduction 44, result has 70.5 percent of original size [2023-11-06 22:43:25,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 145 treesize of output 199 [2023-11-06 22:43:25,441 INFO L322 Elim1Store]: treesize reduction 36, result has 69.2 percent of original size [2023-11-06 22:43:25,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 189 treesize of output 211 [2023-11-06 22:43:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:26,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:34,879 INFO L322 Elim1Store]: treesize reduction 44, result has 92.2 percent of original size [2023-11-06 22:43:34,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 7744 treesize of output 5932